[Gluster-users] Problem with SSL/TLS encryption on Gluster 4.0 & 4.1

Havriliuc Andrei andrei at hostvision.ro
Mon Jul 16 07:44:34 UTC 2018


Hello,

I just filed the bug. The thread can be seen here:


https://bugzilla.redhat.com/show_bug.cgi?id=1601356


The information is mostly the same. Let me know if you need any other info.


Regards.

Andrei H.


On 7/13/18 1:27 PM, Amar Tumballi wrote:
> Thanks David Spisla for pitching in.
>
> Havriliuc, if you can file the bug as requested, we would like to 
> check this out.
>
> -Amar
>
> On Fri, Jul 13, 2018 at 3:44 PM, David Spisla <spisla80 at gmail.com 
> <mailto:spisla80 at gmail.com>> wrote:
>
>     Hello Andrei,
>
>     I did some research. But I didn't find a bug report for this
>     issue. If you want you can create such a report here:
>     https://bugzilla.redhat.com/enter_bug.cgi?product=GlusterFS
>     <https://bugzilla.redhat.com/enter_bug.cgi?product=GlusterFS>
>
>     It is the recommended way in GlusterFS to report a bug, github
>     issues are for new features
>
>     Regards
>     David
>
>     2018-07-13 11:44 GMT+02:00 Havriliuc Andrei <andrei at hostvision.ro
>     <mailto:andrei at hostvision.ro>>:
>
>         Hello David,
>
>
>         Yeah. I also disabled SSL/TLS for management and communication
>         for Gluster. The problem is that I will have traffic over
>         public WAN for a geo replication instance and I cannot go
>         forward until this is solved.
>
>
>         Was there a bug filed about this? I've looked at the issues on
>         the Glusterfs github page but I didn't find anything related
>         to this:
>
>
>         https://github.com/gluster/glusterfs/issues
>         <https://github.com/gluster/glusterfs/issues>
>
>
>         Regards,
>
>         Andrei
>
>
>         On 7/12/18 4:03 PM, David Spisla wrote:
>>         Hello Andrei,
>>
>>         I am also using Gluster 4.1 on CentOS and I have the same
>>         problem. I tested it with a volume which had no network
>>         encryption and one with network encryption. You are not the
>>         only one.
>>         It seems to be a bug. At the moment there is no other choice
>>         to disable client.ssl and sever.ssl on a volume to have
>>         stable I/O.
>>
>>         Regards
>>         David
>>
>>
>>         2018-07-12 10:45 GMT+02:00 Havriliuc Andrei
>>         <andrei at hostvision.ro <mailto:andrei at hostvision.ro>>:
>>
>>             Hello,
>>
>>             I am doing some tests with GlusterFS 4.0 and I can't seem
>>             to solve some SSL/TLS issues. I am trying to set up a 2
>>             node replicated gluster volume with SSL/TLS. For this
>>             setup, I use 3 KVM VMs (2 storage nodes + 1 client node).
>>             For the networking part, I use a dedicated private LAN
>>             for the KVM VMs. Each VM is able to ping the other, so
>>             there's no problem with the connectivity.
>>
>>             To try to make the procedure I used as clear as possible,
>>             I will put all commands in chronological order:
>>
>>
>>
>>             =====================================================
>>
>>             1. First, I update the systems, install ntp and then reboot:
>>
>>             yum update
>>
>>             yum install ntp
>>
>>             systemctl status ntpd
>>             systemctl start ntpd
>>             systemctl enable ntpd
>>             systemctl status ntpd
>>
>>
>>             =====================================================
>>
>>
>>             2. I use a separate partition within the two VM storage
>>             nodes. Each of the two nodes see the separate partition
>>             as /dev/sdb. After creating a thinly provisioned LV on
>>             each of the two nodes, I create an XFS filesystem on them:
>>
>>
>>             pvcreate /dev/sdb1
>>
>>             vgcreate -s 32M vg_glusterfs /dev/sdb1
>>
>>             lvcreate -L 20G --thinpool glusterfs_thin_pool vg_glusterfs
>>
>>             lvcreate -V 15G --thin -n glusterfs_thin_vol1
>>             vg_glusterfs/glusterfs_thin_pool
>>
>>             mkfs.xfs -i size=512 /dev/vg_glusterfs/glusterfs_thin_vol1
>>
>>
>>             =====================================================
>>
>>
>>             3. On each node, I configured the brick data partition
>>             and added the following to /etc/fstab:
>>
>>             mkdir /data
>>
>>             echo "/dev/vg_glusterfs/glusterfs_thin_vol1 /data xfs
>>             defaults 1 2" >> /etc/fstab
>>
>>             mount -a
>>
>>
>>             =====================================================
>>
>>             4. After mounting the volume, I see the following in df
>>             -Th, which is correct:
>>
>>             [root at gluster1 brick1]# df -Th
>>             Filesystem          Type      Size  Used Avail Use%
>>             Mounted on
>>             /dev/sda1         ext4       46G  1.4G 42G  4% /
>>             devtmpfs          devtmpfs  3.9G     0 3.9G  0% /dev
>>             tmpfs         tmpfs     3.9G     0 3.9G  0% /dev/shm
>>             tmpfs         tmpfs     3.9G  8.6M 3.9G  1% /run
>>             tmpfs         tmpfs     3.9G     0 3.9G  0% /sys/fs/cgroup
>>             tmpfs         tmpfs     783M     0 783M  0% /run/user/0
>>             /dev/mapper/vg_glusterfs-glusterfs_thin_vol1 xfs       
>>             15G   34M 15G   1% /data
>>
>>
>>             =====================================================
>>
>>             5. Create specific volume dirs on all storage nodes:
>>
>>
>>             mkdir -pv /data/glusterfs/${HOSTNAME%%.*}/vol01
>>
>>
>>             =====================================================
>>
>>             6. Add entries in /etc/hosts:
>>
>>             vim /etc/hosts
>>
>>             192.168.10.233    gluster1
>>             192.168.10.234    gluster2
>>             192.168.10.237    gluster-client
>>
>>             =====================================================
>>
>>             7. Install gluster from the CentOS SIG:
>>
>>
>>             yum search centos-release-gluster
>>             yum install centos-release-gluster40
>>
>>
>>             yum install glusterfs-server
>>
>>             =====================================================
>>
>>             8. Set up TLS/SSL encryption on all nodes and clients
>>             (gluster1, gluster2, gluster-client):
>>
>>             openssl genrsa -out /etc/ssl/glusterfs.key 2048
>>
>>             In gluster1 node:
>>             openssl req -new -x509 -key /etc/ssl/glusterfs.key -subj
>>             "/CN=gluster1" -out /etc/ssl/glusterfs.pem
>>             In gluster2 node:
>>             openssl req -new -x509 -key /etc/ssl/glusterfs.key -subj
>>             "/CN=gluster2" -out /etc/ssl/glusterfs.pem
>>             In gluster-client node:
>>             openssl req -new -x509 -key /etc/ssl/glusterfs.key -subj
>>             "/CN=gluster-client" -out /etc/ssl/glusterfs.pem
>>
>>
>>             =====================================================
>>
>>             9. On another box, I concatenate all of the .pem
>>             certificates into a .ca file.
>>
>>             Bring all .pem files locally:
>>
>>             scp gluster1:/etc/ssl/glusterfs.pe <http://glusterfs.pe>m
>>             gluster01.pem
>>             scp gluster2:/etc/ssl/glusterfs.pe <http://glusterfs.pe>m
>>             gluster02.pem
>>             scp gluster-client:/etc/ssl/glusterfs.pem gluster-client.pem
>>
>>             For storage nodes, I concatenate all .pem certificates
>>             (including the client's .pem):
>>
>>             cat gluster01.pem gluster02.pem gluster-client.pem >
>>             glusterfs-nodes.ca <http://glusterfs-nodes.ca>
>>
>>             For server clients:
>>
>>             cat gluster01.pem gluster02.pem > glusterfs-client.ca
>>             <http://glusterfs-client.ca>
>>
>>
>>             =====================================================
>>
>>
>>             10. Put glusterfs-nodes.ca <http://glusterfs-nodes.ca>
>>             file on all the storage nodes (this includes storage
>>             nodes .pem + client's .pem):
>>
>>             scp glusterfs-nodes.ca <http://glusterfs-nodes.ca>
>>             gluster1:/etc/ssl/glusterfs.ca <http://glusterfs.ca>
>>             scp glusterfs-nodes.ca <http://glusterfs-nodes.ca>
>>             gluster2:/etc/ssl/glusterfs.ca <http://glusterfs.ca>
>>
>>             Put glusterfs-client.ca <http://glusterfs-client.ca> file
>>             on all the storage nodes (this includes only storage
>>             nodes .pem):
>>
>>             scp glusterfs-client.ca <http://glusterfs-client.ca>
>>             gluster-client:/etc/ssl/glusterfs.ca <http://glusterfs.ca>
>>
>>
>>             =====================================================
>>
>>
>>             11. Enable management encryption on each node (command
>>             ran on gluster1, gluster2, gluster-client):
>>
>>
>>             touch /var/lib/glusterd/secure-access
>>
>>
>>             =====================================================
>>
>>
>>             12. Start, enable and check status of glusterd on
>>             gluster1 and gluster2:
>>
>>             systemctl start glusterd
>>             systemctl enable glusterd
>>             systemctl status glusterd
>>
>>             =====================================================
>>
>>             13. Configure trusted storage pool (TSP):
>>
>>             >From gluster1:
>>
>>
>>             gluster peer status
>>
>>
>>             gluster peer probe gluster2
>>
>>             =====================================================
>>
>>             14. Create the replicated gluster volume but don't start it:
>>
>>
>>             gluster volume create vol01 replica 2 transport tcp
>>             gluster1:/data/glusterfs/gluster1/vol01/brick1
>>             gluster2:/data/glusterfs/gluster2/vol01/brick1
>>
>>             =====================================================
>>
>>
>>             15. Setup SSL/TLS access to the volume:
>>
>>             gluster volume set vol01 auth.ssl-allow
>>             'gluster01,gluster02,gluster-client'
>>
>>
>>             gluster volume set vol01 client.ssl on
>>             gluster volume set vol01 server.ssl on
>>
>>             gluster volume set vol01 network.ping-timeout "5"
>>
>>             gluster volume start vol01
>>
>>
>>             =====================================================
>>
>>
>>             16. Mount the volume on gluster-client:
>>
>>             mount -t glusterfs gluster1:/vol01 /mnt
>>
>>
>>             After mounting the volume, df -h has the correct output:
>>
>>             [root at gluster-client mnt]# df -h
>>             Filesystem       Size  Used Avail Use% Mounted on
>>             /dev/sda1         48G   36G  9.3G 80% /
>>             devtmpfs         1.9G     0  1.9G  0% /dev
>>             tmpfs            1.9G     0  1.9G  0% /dev/shm
>>             tmpfs            1.9G  8.5M  1.9G  1% /run
>>             tmpfs            1.9G     0  1.9G  0% /sys/fs/cgroup
>>             tmpfs            379M     0  379M  0% /run/user/0
>>             gluster1:/vol01   15G  187M   15G  2% /mnt
>>
>>
>>             =====================================================
>>
>>             17. If I try to copy an archive, it throws an error after
>>             transferring part of the file and the /mnt folder becomes
>>             inaccessible for a while:
>>
>>             [root at gluster-client mnt]# cp /root/mybee.tar.gz /mnt/
>>             cp: error writing ‘/mnt/mybee.tar.gz’: Transport endpoint
>>             is not connected
>>             cp: failed to extend ‘/mnt/mybee.tar.gz’: Transport
>>             endpoint is not connected
>>             cp: failed to close ‘/mnt/mybee.tar.gz’: Transport
>>             endpoint is not connected
>>             [root at gluster-client mnt]# ll /mnt
>>             ls: cannot open directory .: Transport endpoint is not
>>             connected
>>
>>
>>             =====================================================
>>
>>             This is the log from gluster-client for the mnt
>>             mountpoint (mnt.log):
>>
>>
>>             [2018-06-29 07:52:03.869382] I [MSGID: 100030]
>>             [glusterfsd.c:2625:main] 0-/usr/sbin/glusterfs: Started
>>             running /usr/sbin/glusterfs version 4.0.2 (args:
>>             /usr/sbin/glusterfs --process-name fuse
>>             --volfile-server=gluster1 --volfile-id=/vol01 /mnt)
>>             [2018-06-29 07:52:03.878709] I
>>             [socket.c:4470:socket_init] 0-glusterfs: SSL support on
>>             the I/O path is ENABLED
>>             [2018-06-29 07:52:03.878782] I
>>             [socket.c:4473:socket_init] 0-glusterfs: SSL support for
>>             glusterd is ENABLED
>>             [2018-06-29 07:52:03.878795] I
>>             [socket.c:4490:socket_init] 0-glusterfs: using private
>>             polling thread
>>             [2018-06-29 07:52:03.879108] E
>>             [socket.c:4541:socket_init] 0-glusterfs: failed to open
>>             /etc/ssl/dhparam.pem, DH ciphers are disabled
>>             [2018-06-29 07:52:03.885718] I [MSGID: 101190]
>>             [event-epoll.c:609:event_dispatch_epoll_worker] 0-epoll:
>>             Started thread with index 1
>>             [2018-06-29 07:52:03.901983] I [MSGID: 101190]
>>             [event-epoll.c:609:event_dispatch_epoll_worker] 0-epoll:
>>             Started thread with index 2
>>             [2018-06-29 07:52:03.902092] I
>>             [socket.c:4470:socket_init] 0-vol01-client-1: SSL support
>>             on the I/O path is ENABLED
>>             [2018-06-29 07:52:03.902117] I
>>             [socket.c:4473:socket_init] 0-vol01-client-1: SSL support
>>             for glusterd is ENABLED
>>             [2018-06-29 07:52:03.902142] I
>>             [socket.c:4490:socket_init] 0-vol01-client-1: using
>>             private polling thread
>>             [2018-06-29 07:52:03.902266] E
>>             [socket.c:4541:socket_init] 0-vol01-client-1: failed to
>>             open /etc/ssl/dhparam.pem, DH ciphers are disabled
>>             [2018-06-29 07:52:03.902977] I
>>             [socket.c:4470:socket_init] 0-vol01-client-0: SSL support
>>             on the I/O path is ENABLED
>>             [2018-06-29 07:52:03.903018] I
>>             [socket.c:4473:socket_init] 0-vol01-client-0: SSL support
>>             for glusterd is ENABLED
>>             [2018-06-29 07:52:03.903028] I
>>             [socket.c:4490:socket_init] 0-vol01-client-0: using
>>             private polling thread
>>             [2018-06-29 07:52:03.903161] E
>>             [socket.c:4541:socket_init] 0-vol01-client-0: failed to
>>             open /etc/ssl/dhparam.pem, DH ciphers are disabled
>>             [2018-06-29 07:52:03.903756] I [MSGID: 114020]
>>             [client.c:2300:notify] 0-vol01-client-0: parent
>>             translators are ready, attempting connect on transport
>>             [2018-06-29 07:52:03.908432] I [MSGID: 114020]
>>             [client.c:2300:notify] 0-vol01-client-1: parent
>>             translators are ready, attempting connect on transport
>>             Final graph:
>>             +------------------------------------------------------------------------------+
>>               1: volume vol01-client-0
>>               2:     type protocol/client
>>               3:     option ping-timeout 5
>>               4:     option remote-host gluster1
>>               5:     option remote-subvolume
>>             /data/glusterfs/gluster1/vol01/brick1
>>               6:     option transport-type socket
>>               7:     option transport.address-family inet
>>               8:     option transport.socket.ssl-enabled on
>>               9:     option transport.tcp-user-timeout 0
>>              10:     option transport.socket.keepalive-time 20
>>              11:     option transport.socket.keepalive-interval 2
>>              12:     option transport.socket.keepalive-count 9
>>              13:     option send-gids true
>>              14: end-volume
>>              15:
>>              16: volume vol01-client-1
>>              17:     type protocol/client
>>              18:     option ping-timeout 5
>>              19:     option remote-host gluster2
>>              20:     option remote-subvolume
>>             /data/glusterfs/gluster2/vol01/brick1
>>              21:     option transport-type socket
>>              22:     option transport.address-family inet
>>              23:     option transport.socket.ssl-enabled on
>>              24:     option transport.tcp-user-timeout 0
>>              25:     option transport.socket.keepalive-time 20
>>              26:     option transport.socket.keepalive-interval 2
>>              27:     option transport.socket.keepalive-count 9
>>              28:     option send-gids true
>>              29: end-volume
>>              30:
>>              31: volume vol01-replicate-0
>>              32:     type cluster/replicate
>>              33:     option afr-pending-xattr
>>             vol01-client-0,vol01-client-1
>>              34:     option use-compound-fops off
>>              35:     subvolumes vol01-client-0 vol01-client-1
>>              36: end-volume
>>              37:
>>              38: volume vol01-dht
>>              39:     type cluster/distribute
>>              40:     option lock-migration off
>>              41:     option force-migration off
>>              42:     subvolumes vol01-replicate-0
>>              43: end-volume
>>              44:
>>              45: volume vol01-write-behind
>>              46:     type performance/write-behind
>>              47:     subvolumes vol01-dht
>>              48: end-volume
>>              49:
>>              50: volume vol01-read-ahead
>>              51:     type performance/read-ahead
>>              52:     subvolumes vol01-write-behind
>>              53: end-volume
>>              54:
>>              55: volume vol01-readdir-ahead
>>              56:     type performance/readdir-ahead
>>              57:     option parallel-readdir off
>>              58:     option rda-request-size 131072
>>              59:     option rda-cache-limit 10MB
>>              60:     subvolumes vol01-read-ahead
>>              61: end-volume
>>              62:
>>              63: volume vol01-io-cache
>>              64:     type performance/io-cache
>>              65:     subvolumes vol01-readdir-ahead
>>              66: end-volume
>>              67:
>>              68: volume vol01-quick-read
>>              69:     type performance/quick-read
>>              70:     subvolumes vol01-io-cache
>>              71: end-volume
>>              72:
>>              73: volume vol01-open-behind
>>              74:     type performance/open-behind
>>              75:     subvolumes vol01-quick-read
>>              76: end-volume
>>              77:
>>              78: volume vol01-md-cache
>>              79:     type performance/md-cache
>>              80:     subvolumes vol01-open-behind
>>              81: end-volume
>>              82:
>>              83: volume vol01
>>              84:     type debug/io-stats
>>              85:     option log-level INFO
>>              86:     option latency-measurement off
>>              87:     option count-fop-hits off
>>              88:     subvolumes vol01-md-cache
>>              89: end-volume
>>              90:
>>              91: volume meta-autoload
>>              92:     type meta
>>              93:     subvolumes vol01
>>              94: end-volume
>>              95:
>>             +------------------------------------------------------------------------------+
>>             [2018-06-29 07:52:03.917518] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:03.918459] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:03.919289] I
>>             [rpc-clnt.c:2071:rpc_clnt_reconfig] 0-vol01-client-0:
>>             changing port to 49152 (from 0)
>>             [2018-06-29 07:52:03.922903] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:03.923922] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:03.925115] I
>>             [rpc-clnt.c:2071:rpc_clnt_reconfig] 0-vol01-client-1:
>>             changing port to 49152 (from 0)
>>             [2018-06-29 07:52:03.930023] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:03.930756] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:03.931859] I [MSGID: 114046]
>>             [client-handshake.c:1176:client_setvolume_cbk]
>>             0-vol01-client-0: Connected to vol01-client-0, attached
>>             to remote volume '/data/glusterfs/gluster1/vol01/brick1'.
>>             [2018-06-29 07:52:03.931894] I [MSGID: 108005]
>>             [afr-common.c:5081:__afr_handle_child_up_event]
>>             0-vol01-replicate-0: Subvolume 'vol01-client-0' came back
>>             up; going online.
>>             [2018-06-29 07:52:03.938903] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:03.939803] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:03.941300] I [MSGID: 114046]
>>             [client-handshake.c:1176:client_setvolume_cbk]
>>             0-vol01-client-1: Connected to vol01-client-1, attached
>>             to remote volume '/data/glusterfs/gluster2/vol01/brick1'.
>>             [2018-06-29 07:52:03.942884] I
>>             [fuse-bridge.c:4234:fuse_init] 0-glusterfs-fuse: FUSE
>>             inited with protocol versions: glusterfs 7.24 kernel 7.22
>>             [2018-06-29 07:52:03.942907] I
>>             [fuse-bridge.c:4864:fuse_graph_sync] 0-fuse: switched to
>>             graph 0
>>             [2018-06-29 07:52:03.946767] W
>>             [socket.c:592:__socket_rwv] 0-vol01-client-0: readv on
>>             192.168.10.233:49152 <http://192.168.10.233:49152> failed
>>             (Input/output error)
>>             [2018-06-29 07:52:03.946791] E
>>             [socket.c:2785:socket_poller] 0-vol01-client-0:
>>             socket_poller 192.168.10.233:49152
>>             <http://192.168.10.233:49152> failed (Input/output error)
>>             [2018-06-29 07:52:03.946837] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-0:
>>             disconnected from vol01-client-0. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:03.947264] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GlusterFS
>>             4.x v1) op(LOOKUP(27)) called at 2018-06-29
>>             07:52:03.945958 (xid=0xb)
>>             [2018-06-29 07:52:03.947297] W [MSGID: 114031]
>>             [client-rpc-fops_v2.c:2540:client4_0_lookup_cbk]
>>             0-vol01-client-0: remote operation failed. Path: /
>>             (00000000-0000-0000-0000-000000000001) [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:03.947455] I [MSGID: 109005]
>>             [dht-selfheal.c:2328:dht_selfheal_directory] 0-vol01-dht:
>>             Directory selfheal failed: Unable to form layout for
>>             directory /
>>             [2018-06-29 07:52:07.885389] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:07.886457] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:07.887452] I
>>             [rpc-clnt.c:2071:rpc_clnt_reconfig] 0-vol01-client-0:
>>             changing port to 49152 (from 0)
>>             [2018-06-29 07:52:07.900627] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:07.901594] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:07.903220] I [MSGID: 114046]
>>             [client-handshake.c:1176:client_setvolume_cbk]
>>             0-vol01-client-0: Connected to vol01-client-0, attached
>>             to remote volume '/data/glusterfs/gluster1/vol01/brick1'.
>>             [2018-06-29 07:52:13.062404] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-0:
>>             disconnected from vol01-client-0. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:13.062780] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GlusterFS
>>             4.x v1) op(WRITE(13)) called at 2018-06-29
>>             07:52:13.048761 (xid=0x22)
>>             [2018-06-29 07:52:13.062826] W [MSGID: 114031]
>>             [client-rpc-fops_v2.c:658:client4_0_writev_cbk]
>>             0-vol01-client-0: remote operation failed [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:13.063017] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GlusterFS
>>             4.x v1) op(WRITE(13)) called at 2018-06-29
>>             07:52:13.049162 (xid=0x23)
>>             [2018-06-29 07:52:13.063175] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GlusterFS
>>             4.x v1) op(WRITE(13)) called at 2018-06-29
>>             07:52:13.049865 (xid=0x24)
>>             [2018-06-29 07:52:13.063319] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GlusterFS
>>             4.x v1) op(WRITE(13)) called at 2018-06-29
>>             07:52:13.050199 (xid=0x25)
>>             [2018-06-29 07:52:13.063473] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GlusterFS
>>             4.x v1) op(WRITE(13)) called at 2018-06-29
>>             07:52:13.050489 (xid=0x26)
>>             [2018-06-29 07:52:13.063600] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GlusterFS
>>             4.x v1) op(WRITE(13)) called at 2018-06-29
>>             07:52:13.050757 (xid=0x27)
>>             [2018-06-29 07:52:13.063745] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GlusterFS
>>             4.x v1) op(WRITE(13)) called at 2018-06-29
>>             07:52:13.051031 (xid=0x28)
>>             [2018-06-29 07:52:13.063883] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GlusterFS
>>             4.x v1) op(WRITE(13)) called at 2018-06-29
>>             07:52:13.053035 (xid=0x29)
>>             The message "W [MSGID: 114031]
>>             [client-rpc-fops_v2.c:658:client4_0_writev_cbk]
>>             0-vol01-client-0: remote operation failed [Transport
>>             endpoint is not connected]" repeated 7 times between
>>             [2018-06-29 07:52:13.062826] and [2018-06-29 07:52:13.063903]
>>             [2018-06-29 07:52:13.104580] W [MSGID: 114031]
>>             [client-rpc-fops_v2.c:1570:client4_0_fxattrop_cbk]
>>             0-vol01-client-0: remote operation failed
>>             [2018-06-29 07:52:13.109230] W
>>             [socket.c:592:__socket_rwv] 0-vol01-client-1: writev on
>>             192.168.10.234:49152 <http://192.168.10.234:49152> failed
>>             (No data available)
>>             [2018-06-29 07:52:13.109282] E
>>             [socket.c:2777:socket_poller] 0-vol01-client-1: poll
>>             error on socket
>>             [2018-06-29 07:52:13.109340] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-1:
>>             disconnected from vol01-client-1. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:13.109357] E [MSGID: 108006]
>>             [afr-common.c:5158:__afr_handle_child_down_event]
>>             0-vol01-replicate-0: All subvolumes are down. Going
>>             offline until atleast one of them comes back up.
>>             [2018-06-29 07:52:13.109461] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:13.109679] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GlusterFS
>>             4.x v1) op(FSTAT(25)) called at 2018-06-29
>>             07:52:13.104513 (xid=0x42)
>>             [2018-06-29 07:52:13.109700] W [MSGID: 114031]
>>             [client-rpc-fops_v2.c:1260:client4_0_fstat_cbk]
>>             0-vol01-client-1: remote operation failed [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:13.109854] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GlusterFS
>>             4.x v1) op(FXATTROP(34)) called at 2018-06-29
>>             07:52:13.104729 (xid=0x43)
>>             [2018-06-29 07:52:13.109877] W [MSGID: 114031]
>>             [client-rpc-fops_v2.c:1570:client4_0_fxattrop_cbk]
>>             0-vol01-client-1: remote operation failed
>>             [2018-06-29 07:52:13.109897] E [MSGID: 114031]
>>             [client-rpc-fops_v2.c:1352:client4_0_finodelk_cbk]
>>             0-vol01-client-0: remote operation failed [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:13.110036] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GlusterFS
>>             4.x v1) op(WRITE(13)) called at 2018-06-29
>>             07:52:13.105623 (xid=0x44)
>>             [2018-06-29 07:52:13.110053] W [MSGID: 114031]
>>             [client-rpc-fops_v2.c:658:client4_0_writev_cbk]
>>             0-vol01-client-1: remote operation failed [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:13.110232] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GlusterFS
>>             4.x v1) op(FSTAT(25)) called at 2018-06-29
>>             07:52:13.105658 (xid=0x45)
>>             [2018-06-29 07:52:13.110250] W [MSGID: 114031]
>>             [client-rpc-fops_v2.c:1260:client4_0_fstat_cbk]
>>             0-vol01-client-1: remote operation failed [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:13.110386] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GlusterFS
>>             4.x v1) op(FSTAT(25)) called at 2018-06-29
>>             07:52:13.106862 (xid=0x46)
>>             [2018-06-29 07:52:13.110530] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GlusterFS
>>             4.x v1) op(FSTAT(25)) called at 2018-06-29
>>             07:52:13.108103 (xid=0x47)
>>             [2018-06-29 07:52:13.110660] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GlusterFS
>>             4.x v1) op(FSTAT(25)) called at 2018-06-29
>>             07:52:13.108969 (xid=0x48)
>>             [2018-06-29 07:52:13.110793] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GlusterFS
>>             4.x v1) op(FXATTROP(34)) called at 2018-06-29
>>             07:52:13.109256 (xid=0x49)
>>             The message "W [MSGID: 114031]
>>             [client-rpc-fops_v2.c:1260:client4_0_fstat_cbk]
>>             0-vol01-client-1: remote operation failed [Transport
>>             endpoint is not connected]" repeated 3 times between
>>             [2018-06-29 07:52:13.110250] and [2018-06-29 07:52:13.110675]
>>             [2018-06-29 07:52:13.110808] W [MSGID: 114031]
>>             [client-rpc-fops_v2.c:1570:client4_0_fxattrop_cbk]
>>             0-vol01-client-1: remote operation failed
>>             [2018-06-29 07:52:13.110933] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GlusterFS
>>             4.x v1) op(FXATTROP(34)) called at 2018-06-29
>>             07:52:13.109284 (xid=0x4a)
>>             The message "W [MSGID: 114031]
>>             [client-rpc-fops_v2.c:1570:client4_0_fxattrop_cbk]
>>             0-vol01-client-1: remote operation failed" repeated 3
>>             times between [2018-06-29 07:52:13.110808] and
>>             [2018-06-29 07:52:14.878874]
>>             [2018-06-29 07:52:14.878895] E [MSGID: 114031]
>>             [client-rpc-fops_v2.c:1352:client4_0_finodelk_cbk]
>>             0-vol01-client-1: remote operation failed [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:14.879095] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:14.879217] W
>>             [fuse-bridge.c:2427:fuse_writev_cbk] 0-glusterfs-fuse:
>>             76: WRITE => -1 gfid=a8848be6-1c05-4a72-88a7-5209eeef7c2c
>>             fd=0x7f7c50023a68 (Transport endpoint is not connected)
>>             [2018-06-29 07:52:14.880509] W
>>             [fuse-bridge.c:1406:fuse_err_cbk] 0-glusterfs-fuse: 77:
>>             FLUSH() ERR => -1 (Transport endpoint is not connected)
>>             The message "I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up" repeated 11 times between [2018-06-29
>>             07:52:14.879095] and [2018-06-29 07:52:17.908056]
>>             [2018-06-29 07:52:17.908066] E [MSGID: 101046]
>>             [dht-common.c:1501:dht_lookup_dir_cbk] 0-vol01-dht: dict
>>             is null
>>             [2018-06-29 07:52:17.908175] W
>>             [fuse-bridge.c:896:fuse_attr_cbk] 0-glusterfs-fuse: 79:
>>             LOOKUP() / => -1 (Transport endpoint is not connected)
>>             [2018-06-29 07:52:18.758975] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:18.759155] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:18.759165] E [MSGID: 101046]
>>             [dht-common.c:1501:dht_lookup_dir_cbk] 0-vol01-dht: dict
>>             is null
>>             [2018-06-29 07:52:18.759214] W
>>             [fuse-bridge.c:896:fuse_attr_cbk] 0-glusterfs-fuse: 80:
>>             LOOKUP() / => -1 (Transport endpoint is not connected)
>>             [2018-06-29 07:52:21.662626] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:21.662756] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:21.662765] E [MSGID: 101046]
>>             [dht-common.c:1501:dht_lookup_dir_cbk] 0-vol01-dht: dict
>>             is null
>>             [2018-06-29 07:52:21.662811] W
>>             [fuse-bridge.c:896:fuse_attr_cbk] 0-glusterfs-fuse: 81:
>>             LOOKUP() / => -1 (Transport endpoint is not connected)
>>             [2018-06-29 07:52:21.663567] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:21.663630] W
>>             [fuse-bridge.c:3205:fuse_statfs_cbk] 0-glusterfs-fuse:
>>             82: ERR => -1 (Transport endpoint is not connected)
>>             [2018-06-29 07:52:23.896362] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:23.896687] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-0:
>>             disconnected from vol01-client-0. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:23.897321] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:23.896427 (xid=0x2a)
>>             [2018-06-29 07:52:23.897353] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-0: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:23.903241] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:23.903566] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-1:
>>             disconnected from vol01-client-1. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:23.904166] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:23.903281 (xid=0x4b)
>>             [2018-06-29 07:52:23.904199] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-1: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:26.909819] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:26.910175] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-0:
>>             disconnected from vol01-client-0. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:26.910858] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:26.909871 (xid=0x2b)
>>             [2018-06-29 07:52:26.910888] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-0: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:26.913921] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:26.914163] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-1:
>>             disconnected from vol01-client-1. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:26.914417] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:26.913961 (xid=0x4c)
>>             [2018-06-29 07:52:26.914443] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-1: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:29.921628] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:29.921867] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-0:
>>             disconnected from vol01-client-0. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:29.922215] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:29.921674 (xid=0x2c)
>>             [2018-06-29 07:52:29.922257] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-0: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:29.926462] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:29.926774] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-1:
>>             disconnected from vol01-client-1. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:29.927415] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:29.926499 (xid=0x4d)
>>             [2018-06-29 07:52:29.927447] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-1: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:32.935218] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:32.935553] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-0:
>>             disconnected from vol01-client-0. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:32.936196] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:32.935271 (xid=0x2d)
>>             [2018-06-29 07:52:32.936230] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-0: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:32.938940] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:32.939232] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-1:
>>             disconnected from vol01-client-1. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:32.939497] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:32.938982 (xid=0x4e)
>>             [2018-06-29 07:52:32.939526] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-1: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:35.948789] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:35.949172] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-0:
>>             disconnected from vol01-client-0. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:35.949860] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:35.948839 (xid=0x2e)
>>             [2018-06-29 07:52:35.949901] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-0: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:35.952154] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:35.952408] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-1:
>>             disconnected from vol01-client-1. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:35.952670] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:35.952199 (xid=0x4f)
>>             [2018-06-29 07:52:35.952699] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-1: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:38.959369] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:38.959733] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-0:
>>             disconnected from vol01-client-0. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:38.960536] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:38.959426 (xid=0x2f)
>>             [2018-06-29 07:52:38.960573] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-0: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:38.963381] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:38.963618] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-1:
>>             disconnected from vol01-client-1. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:38.963877] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:38.963428 (xid=0x50)
>>             [2018-06-29 07:52:38.963906] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-1: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:41.969152] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:41.969397] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-0:
>>             disconnected from vol01-client-0. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:41.969731] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:41.969204 (xid=0x30)
>>             [2018-06-29 07:52:41.969769] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-0: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:41.974130] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:41.974381] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-1:
>>             disconnected from vol01-client-1. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:41.974669] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:41.974198 (xid=0x51)
>>             [2018-06-29 07:52:41.974698] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-1: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:44.984465] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:44.984781] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-0:
>>             disconnected from vol01-client-0. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:44.985444] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:44.984514 (xid=0x31)
>>             [2018-06-29 07:52:44.985477] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-0: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:44.990039] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:44.990352] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-1:
>>             disconnected from vol01-client-1. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:44.990729] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:44.990094 (xid=0x52)
>>             [2018-06-29 07:52:44.990771] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-1: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:47.994448] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:47.994684] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-0:
>>             disconnected from vol01-client-0. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:47.994947] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:47.994499 (xid=0x32)
>>             [2018-06-29 07:52:47.994984] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-0: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:48.002544] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:48.002809] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-1:
>>             disconnected from vol01-client-1. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:48.003388] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:48.002577 (xid=0x53)
>>             [2018-06-29 07:52:48.003416] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-1: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:49.440101] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:49.440257] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:49.440266] E [MSGID: 101046]
>>             [dht-common.c:1501:dht_lookup_dir_cbk] 0-vol01-dht: dict
>>             is null
>>             [2018-06-29 07:52:49.440310] W
>>             [fuse-bridge.c:896:fuse_attr_cbk] 0-glusterfs-fuse: 83:
>>             LOOKUP() / => -1 (Transport endpoint is not connected)
>>             [2018-06-29 07:52:50.182948] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:50.183108] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:50.183116] E [MSGID: 101046]
>>             [dht-common.c:1501:dht_lookup_dir_cbk] 0-vol01-dht: dict
>>             is null
>>             [2018-06-29 07:52:50.197572] W
>>             [fuse-bridge.c:896:fuse_attr_cbk] 0-glusterfs-fuse: 84:
>>             LOOKUP() / => -1 (Transport endpoint is not connected)
>>             [2018-06-29 07:52:50.575887] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:50.576030] I [MSGID: 108006]
>>             [afr-common.c:5444:afr_local_init] 0-vol01-replicate-0:
>>             no subvolumes up
>>             [2018-06-29 07:52:50.576039] E [MSGID: 101046]
>>             [dht-common.c:1501:dht_lookup_dir_cbk] 0-vol01-dht: dict
>>             is null
>>             [2018-06-29 07:52:50.576087] W
>>             [fuse-bridge.c:896:fuse_attr_cbk] 0-glusterfs-fuse: 85:
>>             LOOKUP() / => -1 (Transport endpoint is not connected)
>>             [2018-06-29 07:52:51.012626] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-0: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:51.012924] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-0:
>>             disconnected from vol01-client-0. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:51.013615] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-0: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:51.012667 (xid=0x33)
>>             [2018-06-29 07:52:51.013647] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-0: received RPC status error [Transport
>>             endpoint is not connected]
>>             [2018-06-29 07:52:51.018855] W
>>             [rpc-clnt.c:1739:rpc_clnt_submit] 0-vol01-client-1: error
>>             returned while attempting to connect to host:(null), port:0
>>             [2018-06-29 07:52:51.019093] I [MSGID: 114018]
>>             [client.c:2227:client_rpc_notify] 0-vol01-client-1:
>>             disconnected from vol01-client-1. Client process will
>>             keep trying to connect to glusterd until brick's port is
>>             available
>>             [2018-06-29 07:52:51.019378] E
>>             [rpc-clnt.c:350:saved_frames_unwind] (-->
>>             /lib64/libglusterfs.so.0(_gf_log_callingfn+0x13b)[0x7f7c73b8ae5b]
>>             (--> /lib64/libgfrpc.so.0(+0xce4e)[0x7f7c73955e4e] (-->
>>             /lib64/libgfrpc.so.0(+0xcf6e)[0x7f7c73955f6e] (-->
>>             /lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x8d)[0x7f7c7395760d]
>>             (--> /lib64/libgfrpc.so.0(+0xf178)[0x7f7c73958178] )))))
>>             0-vol01-client-1: forced unwinding frame type(GF-DUMP)
>>             op(DUMP(1)) called at 2018-06-29 07:52:51.018893 (xid=0x54)
>>             [2018-06-29 07:52:51.019408] W [MSGID: 114032]
>>             [client-handshake.c:1620:client_dump_version_cbk]
>>             0-vol01-client-1: received RPC status error [Transport
>>             endpoint is not connected]
>>
>>
>>
>>             =====================================================
>>
>>             After trying to copy the archive, I end up with different
>>             sized files on the two bricks:
>>
>>             [root at gluster1 brick1]# pwd
>>             /data/glusterfs/gluster1/vol01/brick1
>>             [root at gluster1 brick1]# ll
>>             total 384
>>             -rw------- 2 root root 393216 Jun 29 10:52 mybee.tar.gz
>>
>>
>>
>>             [root at gluster2 brick1]# pwd
>>             /data/glusterfs/gluster2/vol01/brick1
>>             [root at gluster2 brick1]# ll
>>             total 1280
>>             -rw------- 2 root root 1310720 Jun 29 10:52 mybee.tar.gz
>>
>>
>>             =====================================================
>>
>>             These are the informations regarding the gluster volume:
>>
>>             [root at gluster1 glusterfs]# gluster volume info vol01
>>
>>             Volume Name: vol01
>>             Type: Replicate
>>             Volume ID: d3b39520-3fbb-4cfc-b736-338d7726b5a1
>>             Status: Started
>>             Snapshot Count: 0
>>             Number of Bricks: 1 x 2 = 2
>>             Transport-type: tcp
>>             Bricks:
>>             Brick1: gluster1:/data/glusterfs/gluster1/vol01/brick1
>>             Brick2: gluster2:/data/glusterfs/gluster2/vol01/brick1
>>             Options Reconfigured:
>>             network.ping-timeout: 5
>>             server.ssl: on
>>             client.ssl: on
>>             auth.ssl-allow: gluster01,gluster02,gluster-client
>>             transport.address-family: inet
>>             nfs.disable: on
>>             performance.client-io-threads: off
>>
>>             =====================================================
>>
>>             Here is the peers information:
>>
>>             [root at gluster1 brick1]# gluster peer status
>>             Number of Peers: 1
>>
>>             Hostname: gluster2
>>             Uuid: 9ccac8e3-71c1-43e4-b723-fb7374be8a1d
>>             State: Peer in Cluster (Connected)
>>
>>
>>             =====================================================
>>
>>             Here is the volume status:
>>
>>             [root at gluster1 brick1]# gluster volume status vol01
>>             Status of volume: vol01
>>             Gluster process        TCP Port  RDMA Port Online Pid
>>             ------------------------------------------------------------------------------
>>             Brick gluster1:/data/glusterfs/gluster1/vol
>>             01/brick1        49152     0 Y       11108
>>             Brick gluster2:/data/glusterfs/gluster2/vol
>>             01/brick1        49152     0 Y       10942
>>             Self-heal Daemon on localhost        N/A       N/A Y     
>>              11133
>>             Self-heal Daemon on gluster2         N/A       N/A Y     
>>              10968
>>
>>             Task Status of Volume vol01
>>             ------------------------------------------------------------------------------
>>             There are no active volume tasks
>>
>>
>>             =====================================================
>>
>>
>>             These are the installed packages on gluster-client:
>>
>>             [root at gluster-client glusterfs]# rpm -qa | grep
>>             "gluster\|fuse"
>>             centos-release-gluster40-1.0-2.el7.centos.x86_64
>>             glusterfs-client-xlators-4.0.2-1.el7.x86_64
>>             fuse-2.9.2-10.el7.x86_64
>>             glusterfs-4.0.2-1.el7.x86_64
>>             glusterfs-fuse-4.0.2-1.el7.x86_64
>>             fuse-libs-2.9.2-10.el7.x86_64
>>             glusterfs-libs-4.0.2-1.el7.x86_64
>>
>>
>>
>>             And these are the installed packages on gluster1 and
>>             gluster2 storage nodes:
>>
>>
>>             [root at gluster1 glusterfs]# rpm -qa | grep "gluster\|fuse"
>>             glusterfs-api-4.0.2-1.el7.x86_64
>>             centos-release-gluster40-1.0-2.el7.centos.x86_64
>>             glusterfs-libs-4.0.2-1.el7.x86_64
>>             glusterfs-client-xlators-4.0.2-1.el7.x86_64
>>             glusterfs-cli-4.0.2-1.el7.x86_64
>>             glusterfs-fuse-4.0.2-1.el7.x86_64
>>             glusterfs-server-4.0.2-1.el7.x86_64
>>             glusterfs-4.0.2-1.el7.x86_64
>>
>>
>>
>>
>>             Can anyone point me in the right direction? What am I
>>             doing wrong? The mount works fine until I try to copy an
>>             archive, multiple smaller files or a bigger file on it
>>             (meaning it shows correctly in df -Th and I can create
>>             several files with "touch file1 file2..."). Basically,
>>             after any data transfer, I get these errors.
>>
>>
>>             I followed the indications from the redhat page:
>>
>>             https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.1/html/administration_guide/chap-network_encryption
>>             <https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.1/html/administration_guide/chap-network_encryption>
>>
>>             UPDATE 1:
>>             I tried doing the exact same steps in Gluster 3.12 and
>>             had no problem. The steps worked and SSL/TLS was enabled.
>>             There was no transport error or anything and I also
>>             checked if SSL/TLS was enabled. Afterwards, I also tried
>>             with the new release 4.1 and the problem persists (same
>>             error with "Transport endpoint is not connected").
>>             Let me know if you need any other info. Any help is much
>>             appreciated.
>>
>>             Thank you.
>>             _______________________________________________
>>             Gluster-users mailing list
>>             Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>
>>             https://lists.gluster.org/mailman/listinfo/gluster-users
>>             <https://lists.gluster.org/mailman/listinfo/gluster-users>
>>
>>
>
>
>
>     _______________________________________________
>     Gluster-users mailing list
>     Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>
>     https://lists.gluster.org/mailman/listinfo/gluster-users
>     <https://lists.gluster.org/mailman/listinfo/gluster-users>
>
>
>
>
> -- 
> Amar Tumballi (amarts)

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