[Gluster-devel] [Gluster-users] In a replica 2 server, file-updates on one server missing on the other server #Personal#
A Ghoshal
a.ghoshal at tcs.com
Wed Feb 4 21:36:02 UTC 2015
Sorry for spamming you guys, but this is kind of important for me to
debug, so if you saw anything like this before, do let me know. Here's an
update:
It seems the mount client is attempting connection with an invalid port
number. 49175 is NOT the port number of glusterfsd on serv1
(192.168.24.8).
I got me an strace:
[pid 31026] open("/proc/sys/net/ipv4/ip_local_reserved_ports", O_RDONLY) =
-1 ENOENT (No such file or directory)
[pid 31026] write(4, "[2015-02-04 20:39:02.793154] W ["..., 215) = 215
[pid 31026] write(4, "[2015-02-04 20:39:02.793289] W ["..., 194) = 194
[pid 31026] bind(10, {sa_family=AF_INET, sin_port=htons(1023),
sin_addr=inet_addr("192.168.24.80")}, 16) = 0
[pid 31026] fcntl(10, F_GETFL) = 0x2 (flags O_RDWR)
[pid 31026] fcntl(10, F_SETFL, O_RDWR|O_NONBLOCK) = 0
[pid 31026] connect(10, {sa_family=AF_INET, sin_port=htons(49175),
sin_addr=inet_addr("192.168.24.81")}, 16) = -1 EINPROGRESS (Operation now
in progress)
[pid 31026] fcntl(10, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
[pid 31026] fcntl(10, F_SETFL, O_RDWR|O_NONBLOCK) = 0
[pid 31026] epoll_ctl(3, EPOLL_CTL_ADD, 10, {EPOLLIN|EPOLLPRI|EPOLLOUT,
{u32=10, u64=8589934602}}) = 0
[pid 31026] nanosleep({1, 0}, <unfinished ...>
[pid 31021] <... epoll_wait resumed> {{EPOLLIN|EPOLLOUT|EPOLLERR|EPOLLHUP,
{u32=10, u64=8589934602}}}, 257, 4294967295) = 1
[pid 31021] getsockopt(10, SOL_SOCKET, SO_ERROR, [29422518842425455], [4])
= 0
[pid 31021] shutdown(10, 2 /* send and receive */) = -1 ENOTCONN
(Transport endpoint is not connected)
Which basically told me that connection is attempted via a non-blocking
socket at port 49175. The errno from the failure is -ECONNREFUSED, which
is what is expected.
807 in socket.c
(gdb) bt
#0 __socket_connect_finish (this=0x6887a0) at socket.c:807
#1 socket_connect_finish (this=0x6887a0) at socket.c:2147
#2 0x00007fc863de4c04 in socket_event_handler (fd=<value optimized out>,
idx=<value optimized out>, data=0x6887a0,
poll_in=1, poll_out=4, poll_err=<value optimized out>) at
socket.c:2223
#3 0x00007fc867f7919f in event_dispatch_epoll_handler
(event_pool=0x62db70) at event-epoll.c:384
#4 event_dispatch_epoll (event_pool=0x62db70) at event-epoll.c:445
#5 0x0000000000406b06 in main (argc=4, argv=0x7fff25302c38) at
glusterfsd.c:1934
(gdb) print *optval
Cannot access memory at address 0x6f
(gdb) print optval
$1 = 111
Note that this agrees with the following debug log:
[2015-02-03 12:11:33.833647] D
[socket.c:1962:__socket_proto_state_machine] 0-replicated_vol-1: reading
from socket failed. Error (No data available), peer (192.168.24.81:49175)
There is, of course no service running on port 49175. In fact, listen port
for corresponding glusterd on serv1 is 49206. Where does the mount client
pick this port number from? I know that if I kill and restart the mount
client on serv0 from command line, then the problem will disappear. So,
it's not something that is up with the processes on serv1...
Thanks,
Anirban
From: A Ghoshal/MUM/TCS
To: A Ghoshal <a.ghoshal at tcs.com>
Cc: gluster-users at gluster.org, gluster-users-bounces at gluster.org,
Pranith Kumar Karampuri <pkarampu at redhat.com>
Date: 02/05/2015 02:03 AM
Subject: Re: [Gluster-users] In a replica 2 server, file-updates on
one server missing on the other server #Personal#
Sent by: A Ghoshal
Ok, more updates here:
I turned on trace and it seems bind to secure port on the mount client
with the remote brick is successful - afterwards the connect() fails to
complete. I saw these logs:
[2015-02-03 12:11:33.832615] T [rpc-clnt.c:422:rpc_clnt_reconnect]
0-replicated_vol-1: attempting reconnect
[2015-02-03 12:11:33.832666] D [name.c:155:client_fill_address_family]
0-replicated_vol-1: address-family not specified, guessing it to be inet
from (remote-host: serv1)
[2015-02-03 12:11:33.832683] T
[name.c:225:af_inet_client_get_remote_sockaddr] 0-replicated_vol-1: option
remote-port missing in volume replicated_vol-1. Defaulting to 24007
[2015-02-03 12:11:33.833083] D [common-utils.c:237:gf_resolve_ip6]
0-resolver: returning ip-192.168.24.81 (port-24007) for hostname: serv1
and port: 24007
[2015-02-03 12:11:33.833113] T [socket.c:731:__socket_nodelay]
0-replicated_vol-1: NODELAY enabled for socket 10
[2015-02-03 12:11:33.833128] T [socket.c:790:__socket_keepalive]
0-replicated_vol-1: Keep-alive enabled for socket 10, interval 2, idle: 20
[2015-02-03 12:11:33.833188] W [common-utils.c:2247:gf_get_reserved_ports]
0-glusterfs: could not open the file
/proc/sys/net/ipv4/ip_local_reserved_ports for getting reserved ports info
(No such file or directory)
[2015-02-03 12:11:33.833204] W
[common-utils.c:2280:gf_process_reserved_ports] 0-glusterfs: Not able to
get reserved ports, hence there is a possibility that glusterfs may
consume reserved port
[2015-02-03 12:11:33.833560] D [socket.c:605:__socket_shutdown]
0-replicated_vol-1: shutdown() returned -1. Transport endpoint is not
connected
[2015-02-03 12:11:33.833594] T
[rpc-clnt.c:519:rpc_clnt_connection_cleanup] 0-replicated_vol-1: cleaning
up state in transport object 0x6887a0
[2015-02-03 12:11:33.833622] D [socket.c:486:__socket_rwv]
0-replicated_vol-1: EOF on socket
[2015-02-03 12:11:33.833635] W [socket.c:514:__socket_rwv]
0-replicated_vol-1: readv failed (No data available)
[2015-02-03 12:11:33.833647] D
[socket.c:1962:__socket_proto_state_machine] 0-replicated_vol-1: reading
from socket failed. Error (No data available), peer (192.168.24.81:49175)
[2015-02-03 12:11:33.833659] D [socket.c:2236:socket_event_handler]
0-transport: disconnecting now
[2015-02-03 12:11:33.833684] T
[rpc-clnt.c:519:rpc_clnt_connection_cleanup] 0-replicated_vol-1: cleaning
up state in transport object 0x6887a0
After that, I attached the mount process to my gdb session and attached a
breakpoint at __socket_shutdown(). It gave me the following traceback
Breakpoint 1, __socket_shutdown (this=0x68a7f0) at socket.c:594
594 socket.c: No such file or directory.
in socket.c
(gdb) bt
#0 __socket_shutdown (this=0x68a7f0) at socket.c:594
#1 0x00007f3391906553 in __socket_disconnect (this=0x68a7f0) at
socket.c:623
#2 0x00007f339190856a in socket_connect_finish (this=0x68a7f0) at
socket.c:2160
#3 0x00007f339190dc04 in socket_event_handler (fd=<value optimized out>,
idx=<value optimized out>, data=0x68a7f0,
poll_in=1, poll_out=4, poll_err=<value optimized out>) at
socket.c:2223
#4 0x00007f3395aa219f in event_dispatch_epoll_handler
(event_pool=0x62d8b0) at event-epoll.c:384
#5 event_dispatch_epoll (event_pool=0x62d8b0) at event-epoll.c:445
#6 0x0000000000406b06 in main (argc=4, argv=0x7fff71108c38) at
glusterfsd.c:1934
(gdb)
In case somebody could give me a clue or two on my next move (I'm looking
at the code in the meantime), I'd be very grateful.
Thanks,
Anirban
From: A Ghoshal <a.ghoshal at tcs.com>
To: Pranith Kumar Karampuri <pkarampu at redhat.com>
Cc: gluster-users at gluster.org
Date: 02/03/2015 05:24 AM
Subject: Re: [Gluster-users] In a replica 2 server, file-updates on
one server missing on the other server #Personal#
Sent by: gluster-users-bounces at gluster.org
Hi Pranith,
I finally understood what you meant the secure ports, because the issue
occurred in one of our setups once more. It seems one of the clients on
serv1 could not open a connection to the glusterfsd running on serv0. I'd
actually started a mail trail about it (believing it might be something
else, initially) here:
http://www.gluster.org/pipermail/gluster-users/2015-February/020465.html
I think I can write me a rudimentary kind of patch altering
af_inet_bind_to_port_lt_ceiling() to get it to call bind with port 0,
rather than specify a port explicitly when the client.bind-insecure is
specified ...
Then I'd need to create a way to set server.allow-insecure using the cli
(or if you already sent around the patch to do that like you said in the
earlier mail, do let me know). I'll keep you posted about it round here or
@ [gluster-devel] if I can get it to work.
Thanks a lot,
Anirban
From: A Ghoshal/MUM/TCS
To: Pranith Kumar Karampuri <pkarampu at redhat.com>
Cc: gluster-users at gluster.org, Niels de Vos <ndevos at redhat.com>
Date: 01/23/2015 02:45 PM
Subject: Re: [Gluster-users] In a replica 2 server, file-updates on
one server missing on the other server #Personal#
Sent by: A Ghoshal
Oh, I didn't I only read a fragment of the IRC log and assumed
--xlator-option would be enough. Apparently it's a lot more work....
I do have a query, though. These connections, from one of our setups, are
these on secure ports? Or, maybe I didn't get it the first time.....
root at serv0:/root> ps -ef | grep replicated_vol
root 8851 25307 0 10:03 pts/2 00:00:00 grep replicated_vol
root 29751 1 4 Jan21 ? 01:47:20 /usr/sbin/glusterfsd -s
serv0 --volfile-id replicated_vol.serv0.mnt-bricks-replicated_vol-brick -p
/var/lib/glusterd/vols/_replicated_vol/run/serv0-mnt-bricks-replicated_vol-brick.pid
-S /var/run/dff9fa3c93e82f20103f2a3d91adc4a8.socket --brick-name
/mnt/bricks/replicated_vol/brick -l
/var/log/glusterfs/bricks/mnt-bricks-replicated_vol-brick.log
--xlator-option *-posix.glusterd-uuid=1a1d1ebc-4b92-428f-b66b-9c5efa49574d
--brick-port 49185 --xlator-option replicated_vol-server.listen-port=49185
root 30399 1 0 Jan21 ? 00:19:06 /usr/sbin/glusterfs
--volfile-id=replicated_vol --volfile-server=serv0 /mnt/replicated_vol
root at serv0:/root> netstat -p | grep 30399
tcp 0 0 serv0:969 serv0:49185 ESTABLISHED
30399/glusterfs
tcp 0 0 serv0:999 serv1:49159 ESTABLISHED
30399/glusterfs
tcp 0 0 serv0:1023 serv0:24007 ESTABLISHED
30399/glusterfs
root at serv0:/root>
Thanks again,
Anirban
From: Pranith Kumar Karampuri <pkarampu at redhat.com>
To: A Ghoshal <a.ghoshal at tcs.com>
Cc: gluster-users at gluster.org, Niels de Vos <ndevos at redhat.com>
Date: 01/23/2015 01:58 PM
Subject: Re: [Gluster-users] In a replica 2 server, file-updates on
one server missing on the other server #Personal#
On 01/23/2015 01:54 PM, A Ghoshal wrote:
Thanks a lot, Pranith.
We'll set this option on our test servers and keep the setup under
observation.
How did you get the bind-insecure option working?
I guess I will send a patch to make it 'volume set option'
Pranith
Thanks,
Anirban
From: Pranith Kumar Karampuri <pkarampu at redhat.com>
To: A Ghoshal <a.ghoshal at tcs.com>
Cc: gluster-users at gluster.org, Niels de Vos <ndevos at redhat.com>
Date: 01/23/2015 01:28 PM
Subject: Re: [Gluster-users] In a replica 2 server, file-updates on
one server missing on the other server #Personal#
On 01/22/2015 02:07 PM, A Ghoshal wrote:
Hi Pranith,
Yes, the very same (chalcogen_eg_oxygen at yahoo.com). Justin Clift sent me a
mail a while back telling me that it is better if we all use our business
email addresses so I made me a new profile.
Glusterfs complains about /proc/sys/net/ipv4/ip_local_reserved_ports
because we use a really old Linux kernel (2.6.34) wherein this feature is
not present. We plan to upgrade our Linux so often but each time we are
dissuaded from it by some compatibility issue or the other. So, we get
this log every time - on both good volumes and bad ones. What bothered me
was this (on serv1):
Basically to make the connections to servers i.e. bricks clients need to
choose secure ports i.e. port less than 1024. Since this file is not
present, it is not binding to any port as per the code I just checked.
There is an option called client-bind-insecure which bypasses this check.
I feel that is one (probably only way) to get around this.
You have to "volume set server.allow-insecure on" option and bind-insecure
option.
CC ndevos who seemed to have helped someone set bind-insecure option
correctly here (http://irclog.perlgeek.de/gluster/2014-04-09/text)
Pranith
[2015-01-20 09:37:49.151744] T
[rpc-clnt.c:1182:rpc_clnt_record_build_header] 0-rpc-clnt: Request fraglen
456, payload: 360, rpc hdr: 96
[2015-01-20 09:37:49.151780] T [rpc-clnt.c:1499:rpc_clnt_submit]
0-rpc-clnt: submitted request (XID: 0x39620x Program: GlusterFS 3.3,
ProgVers: 330, Proc: 27) to rpc-transport (replicated_vol-client-0)
[2015-01-20 09:37:49.151810] T [rpc-clnt.c:1302:rpc_clnt_record]
0-replicated_vol-client-1: Auth Info: pid: 7599, uid: 0, gid: 0, owner:
0000000000000000
[2015-01-20 09:37:49.151824] T
[rpc-clnt.c:1182:rpc_clnt_record_build_header] 0-rpc-clnt: Request fraglen
456, payload: 360, rpc hdr: 96
[2015-01-20 09:37:49.151889] T [rpc-clnt.c:1499:rpc_clnt_submit]
0-rpc-clnt: submitted request (XID: 0x39563x Program: GlusterFS 3.3,
ProgVers: 330, Proc: 27) to rpc-transport (replicated_vol-client-1)
[2015-01-20 09:37:49.152239] T [rpc-clnt.c:669:rpc_clnt_reply_init]
0-replicated_vol-client-1: received rpc message (RPC XID: 0x39563x
Program: GlusterFS 3.3, ProgVers: 330, Proc: 27) from rpc-transport
(replicated_vol-client-1)
[2015-01-20 09:37:49.152484] T [rpc-clnt.c:669:rpc_clnt_reply_init]
0-replicated_vol-client-0: received rpc message (RPC XID: 0x39620x
Program: GlusterFS 3.3, ProgVers: 330, Proc: 27) from rpc-transport
(replicated_vol-client-0)
When I write on the good server (serv1), we see that an RPC request is
sent to both client-0 and client-1. While, when I write on the bad server
(serv0), the RPC request is sent only to client-0, which is why it is no
wonder that the writes are not synced over to serv1. Somehow I could not
make the daemon on serv0 understand that there are two up-children and not
just one.
One additional detail - since we are using a kernel that's too old, we do
not have the (Anand Avati's?) FUse readdirplus patches, either. I've
noticed that the fixes in the readdirplus version of glusterfs aren't
always guaranteed to be present on the non-readdirplus version of the
patches. I'd filed a bug around one such anomaly back, but never got
around to writing a patch for it (sorry!) Here it is:
https://bugzilla.redhat.com/show_bug.cgi?id=1062287
I don't this has anything to do with readdirplus.
Maybe something on similar lines here?
Thanks,
Anirban
P.s. Please ignore the #Personal# in the subject line - we need to do that
to push mails to the public domain past the email filter safely.
From: Pranith Kumar Karampuri <pkarampu at redhat.com>
To: A Ghoshal <a.ghoshal at tcs.com>, gluster-users at gluster.org
Date: 01/22/2015 12:09 AM
Subject: Re: [Gluster-users] In a replica 2 server, file-updates on
one server missing on the other server
hi,
Responses inline.
PS: You are chalkogen_oxygen?
Pranith
On 01/20/2015 05:34 PM, A Ghoshal wrote:
Hello,
I am using the following replicated volume:
root at serv0:~> gluster v info replicated_vol
Volume Name: replicated_vol
Type: Replicate
Volume ID: 26d111e3-7e4c-479e-9355-91635ab7f1c2
Status: Started
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: serv0:/mnt/bricks/replicated_vol/brick
Brick2: serv1:/mnt/bricks/replicated_vol/brick
Options Reconfigured:
diagnostics.client-log-level: INFO
network.ping-timeout: 10
nfs.enable-ino32: on
cluster.self-heal-daemon: on
nfs.disable: off
replicated_vol is mounted at /mnt/replicated_vol on both serv0 and serv1.
If I do the following on serv0:
root at serv0:~>echo "cranberries" > /mnt/replicated_vol/testfile
root at serv0:~>echo "tangerines" >> /mnt/replicated_vol/testfile
And then I check for the state of the replicas in the bricks, then I find
that
root at serv0:~>cat /mnt/bricks/replicated_vol/brick/testfile
cranberries
tangerines
root at serv0:~>
root at serv1:~>cat /mnt/bricks/replicated_vol/brick/testfile
root at serv1:~>
As may be seen, the replica on serv1 is blank, when I write into testfile
from serv0 (even though the file is created on both bricks).
Interestingly, if I write something to the file at serv1, then the two
replicas become identical.
root at serv1:~>echo "artichokes" >> /mnt/replicated_vol/testfile
root at serv1:~>cat /mnt/bricks/replicated_vol/brick/testfile
cranberries
tangerines
artichokes
root at serv1:~>
root at serv0:~>cat /mnt/bricks/replicated_vol/brick/testfile
cranberries
tangerines
artichokes
root at serv0:~>
So, I dabbled into the logs a little bit, after upping the diagnostic
level, and this is what I saw:
When I write on serv0 (bad case):
[2015-01-20 09:21:52.197704] T [fuse-bridge.c:546:fuse_lookup_resume]
0-glusterfs-fuse: 53027: LOOKUP
/testfl(f0a76987-8a42-47a2-b027-a823254b736b)
[2015-01-20 09:21:52.197959] D
[afr-common.c:131:afr_lookup_xattr_req_prepare]
0-replicated_vol-replicate-0: /testfl: failed to get the gfid from dict
[2015-01-20 09:21:52.198006] T [rpc-clnt.c:1302:rpc_clnt_record]
0-replicated_vol-client-0: Auth Info: pid: 28151, uid: 0, gid: 0, owner:
0000000000000000
[2015-01-20 09:21:52.198024] T
[rpc-clnt.c:1182:rpc_clnt_record_build_header] 0-rpc-clnt: Request fraglen
456, payload: 360, rpc hdr: 96
[2015-01-20 09:21:52.198108] T [rpc-clnt.c:1499:rpc_clnt_submit]
0-rpc-clnt: submitted request (XID: 0x78163x Program: GlusterFS 3.3,
ProgVers: 330, Proc: 27) to rpc-transport (replicated_vol-client-0)
[2015-01-20 09:21:52.198565] T [rpc-clnt.c:669:rpc_clnt_reply_init]
0-replicated_vol-client-0: received rpc message (RPC XID: 0x78163x
Program: GlusterFS 3.3, ProgVers: 330, Proc: 27) from rpc-transport
(replicated_vol-client-0)
[2015-01-20 09:21:52.198640] D
[afr-self-heal-common.c:138:afr_sh_print_pending_matrix]
0-replicated_vol-replicate-0: pending_matrix: [ 0 3 ]
[2015-01-20 09:21:52.198669] D
[afr-self-heal-common.c:138:afr_sh_print_pending_matrix]
0-replicated_vol-replicate-0: pending_matrix: [ 0 0 ]
[2015-01-20 09:21:52.198681] D
[afr-self-heal-common.c:887:afr_mark_sources]
0-replicated_vol-replicate-0: Number of sources: 1
[2015-01-20 09:21:52.198694] D
[afr-self-heal-data.c:825:afr_lookup_select_read_child_by_txn_type]
0-replicated_vol-replicate-0: returning read_child: 0
[2015-01-20 09:21:52.198705] D
[afr-common.c:1380:afr_lookup_select_read_child]
0-replicated_vol-replicate-0: Source selected as 0 for /testfl
[2015-01-20 09:21:52.198720] D
[afr-common.c:1117:afr_lookup_build_response_params]
0-replicated_vol-replicate-0: Building lookup response from 0
[2015-01-20 09:21:52.198732] D
[afr-common.c:1732:afr_lookup_perform_self_heal]
0-replicated_vol-replicate-0: Only 1 child up - do not attempt to detect
self heal
When I write on serv1 (good case):
[2015-01-20 09:37:49.151506] T [fuse-bridge.c:546:fuse_lookup_resume]
0-glusterfs-fuse: 31212: LOOKUP
/testfl(f0a76987-8a42-47a2-b027-a823254b736b)
[2015-01-20 09:37:49.151683] D
[afr-common.c:131:afr_lookup_xattr_req_prepare]
0-replicated_vol-replicate-0: /testfl: failed to get the gfid from dict
[2015-01-20 09:37:49.151726] T [rpc-clnt.c:1302:rpc_clnt_record]
0-replicated_vol-client-0: Auth Info: pid: 7599, uid: 0, gid: 0, owner:
0000000000000000
[2015-01-20 09:37:49.151744] T
[rpc-clnt.c:1182:rpc_clnt_record_build_header] 0-rpc-clnt: Request fraglen
456, payload: 360, rpc hdr: 96
[2015-01-20 09:37:49.151780] T [rpc-clnt.c:1499:rpc_clnt_submit]
0-rpc-clnt: submitted request (XID: 0x39620x Program: GlusterFS 3.3,
ProgVers: 330, Proc: 27) to rpc-transport (replicated_vol-client-0)
[2015-01-20 09:37:49.151810] T [rpc-clnt.c:1302:rpc_clnt_record]
0-replicated_vol-client-1: Auth Info: pid: 7599, uid: 0, gid: 0, owner:
0000000000000000
[2015-01-20 09:37:49.151824] T
[rpc-clnt.c:1182:rpc_clnt_record_build_header] 0-rpc-clnt: Request fraglen
456, payload: 360, rpc hdr: 96
[2015-01-20 09:37:49.151889] T [rpc-clnt.c:1499:rpc_clnt_submit]
0-rpc-clnt: submitted request (XID: 0x39563x Program: GlusterFS 3.3,
ProgVers: 330, Proc: 27) to rpc-transport (replicated_vol-client-1)
[2015-01-20 09:37:49.152239] T [rpc-clnt.c:669:rpc_clnt_reply_init]
0-replicated_vol-client-1: received rpc message (RPC XID: 0x39563x
Program: GlusterFS 3.3, ProgVers: 330, Proc: 27) from rpc-transport
(replicated_vol-client-1)
[2015-01-20 09:37:49.152484] T [rpc-clnt.c:669:rpc_clnt_reply_init]
0-replicated_vol-client-0: received rpc message (RPC XID: 0x39620x
Program: GlusterFS 3.3, ProgVers: 330, Proc: 27) from rpc-transport
(replicated_vol-client-0)
[2015-01-20 09:37:49.152582] D
[afr-self-heal-common.c:138:afr_sh_print_pending_matrix]
0-replicated_vol-replicate-0: pending_matrix: [ 0 3 ]
[2015-01-20 09:37:49.152596] D
[afr-self-heal-common.c:138:afr_sh_print_pending_matrix]
0-replicated_vol-replicate-0: pending_matrix: [ 0 0 ]
[2015-01-20 09:37:49.152621] D
[afr-self-heal-common.c:887:afr_mark_sources]
0-replicated_vol-replicate-0: Number of sources: 1
[2015-01-20 09:37:49.152633] D
[afr-self-heal-data.c:825:afr_lookup_select_read_child_by_txn_type]
0-replicated_vol-replicate-0: returning read_child: 0
[2015-01-20 09:37:49.152644] D
[afr-common.c:1380:afr_lookup_select_read_child]
0-replicated_vol-replicate-0: Source selected as 0 for /testfl
[2015-01-20 09:37:49.152657] D
[afr-common.c:1117:afr_lookup_build_response_params]
0-replicated_vol-replicate-0: Building lookup response from 0
We see that when you write on serv1, the RPC request is sent to both
replicated_vol-client-0 and replicated_vol-client-1, while when we write
on serv0, the request is sent only to replicated_vol-client-0, and the
FUse client is unaware of the presence of client-1 in the latter case.
I checked a bit more in the logs. When I turn on my trace, I found many
instances of these logs on serv0 but NOT on serv1:
[2015-01-20 09:21:15.520784] T [fuse-bridge.c:681:fuse_attr_cbk]
0-glusterfs-fuse: 53011: LOOKUP() / => 1
[2015-01-20 09:21:17.683088] T [rpc-clnt.c:422:rpc_clnt_reconnect]
0-replicated_vol-client-1: attempting reconnect
[2015-01-20 09:21:17.683159] D [name.c:155:client_fill_address_family]
0-replicated_vol-client-1: address-family not specified, guessing it to be
inet from (remote-host: serv1)
[2015-01-20 09:21:17.683178] T
[name.c:225:af_inet_client_get_remote_sockaddr] 0-replicated_vol-client-1:
option remote-port missing in volume replicated_vol-client-1. Defaulting
to 24007
[2015-01-20 09:21:17.683191] T [common-utils.c:188:gf_resolve_ip6]
0-resolver: flushing DNS cache
[2015-01-20 09:21:17.683202] T [common-utils.c:195:gf_resolve_ip6]
0-resolver: DNS cache not present, freshly probing hostname: serv1
[2015-01-20 09:21:17.683814] D [common-utils.c:237:gf_resolve_ip6]
0-resolver: returning ip-192.168.24.81 (port-24007) for hostname: serv1
and port: 24007
[2015-01-20 09:21:17.684139] D [common-utils.c:257:gf_resolve_ip6]
0-resolver: next DNS query will return: ip-192.168.24.81 port-24007
[2015-01-20 09:21:17.684164] T [socket.c:731:__socket_nodelay]
0-replicated_vol-client-1: NODELAY enabled for socket 10
[2015-01-20 09:21:17.684177] T [socket.c:790:__socket_keepalive]
0-replicated_vol-client-1: Keep-alive enabled for socket 10, interval 2,
idle: 20
[2015-01-20 09:21:17.684236] W [common-utils.c:2247:gf_get_reserved_ports]
0-glusterfs: could not open the file
/proc/sys/net/ipv4/ip_local_reserved_ports for getting reserved ports info
(No such file or directory)
[2015-01-20 09:21:17.684253] W
[common-utils.c:2280:gf_process_reserved_ports] 0-glusterfs: Not able to
get reserved ports, hence there is a possibility that glusterfs may
consume reserved port
Logs above suggest that mount process couldn't assign a reserved port
because it couldn't find the file
/proc/sys/net/ipv4/ip_local_reserved_ports
I guess reboot of the machine fixed it. Wonder why it was not found in the
first place.
Pranith.
[2015-01-20 09:21:17.684660] D [socket.c:605:__socket_shutdown]
0-replicated_vol-client-1: shutdown() returned -1. Transport endpoint is
not connected
[2015-01-20 09:21:17.684699] T
[rpc-clnt.c:519:rpc_clnt_connection_cleanup] 0-replicated_vol-client-1:
cleaning up state in transport object 0x68a630
[2015-01-20 09:21:17.684731] D [socket.c:486:__socket_rwv]
0-replicated_vol-client-1: EOF on socket
[2015-01-20 09:21:17.684750] W [socket.c:514:__socket_rwv]
0-replicated_vol-client-1: readv failed (No data available)
[2015-01-20 09:21:17.684766] D
[socket.c:1962:__socket_proto_state_machine] 0-replicated_vol-client-1:
reading from socket failed. Error (No data available), peer
(192.168.24.81:49198)
I could not find a 'remote-port' option in /var/lib/glusterd on either
peer. Could somebody tell me where this configuration is looked up from?
Also, sometime later, I rebooted serv0 and that seemed to solve the
problem. However, stop+start of replicated_vol and restart of
/etc/init.d/glusterd did NOT solve the problem.
Ignore that log. If no port is given in that volfile, it picks 24007 as
the port, which is the default port where glusterd 'listens'
Any help on this matter will be greatly appreciated as I need to provide
robustness assurances for our setup.
Thanks a lot,
Anirban
P.s. Additional details:
glusterfs version: 3.4.2
Linux kernel version: 2.6.34
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