[Gluster-users] Change transport-type on volume from tcp to rdma, tcp
Niels de Vos
ndevos at redhat.com
Tue Jul 21 21:49:21 UTC 2015
On Tue, Jul 21, 2015 at 11:20:20PM +0200, Geoffrey Letessier wrote:
> Hello Soumya, Hello everybody,
>
> network.ping-timeout was set to 42 seconds. I set it to 0 but no
> difference. The problem was, after having re-set le transport-type to
> rdma,tcp some brick down after a few minutes.. Despite of restarting
> volumes, after a few minutes, some [other/different] bricks down
> again.
I'm not sure how if the ping-timeout is differently handled when RDMA is
used. Adding two of the guys that know RDMA well on CC.
> Now, after re-creation of my volume, bricks keep alive but, oddly, i’m
> not able to write on my volume. In addition, I defined a distributed
> volume with 2 servers, 4 bricks of 250GB each and my final volume
> seems to be only sized to 500GB… It’s amazing..
As seen further below, the 500GB volume is caused by two unreachable
bricks. When the bricks are not reachable, the size of the bricks can
not be detected by the client and therefore 2x 250 GB is missing.
It is unclear to me why writing to a pure distributed volume fails. When
a brick is not reachable, and the file should be created there, it
would normally get created on an other brick. When the brick that should
have the file gets online, and a new lookup for the file is done, a so
called "link file" is created, which points to the file on the other
brick. I guess the failure has to do with the connection issues, and I
would suggest to get that solved first.
HTH,
Niels
> Here you can find some information:
> # gluster volume status vol_workdir_amd
> Status of volume: vol_workdir_amd
> Gluster process TCP Port RDMA Port Online Pid
> ------------------------------------------------------------------------------
> Brick ib-storage1:/export/brick_workdir/bri
> ck1/data 49185 49186 Y 23098
> Brick ib-storage3:/export/brick_workdir/bri
> ck1/data 49158 49159 Y 3886
> Brick ib-storage1:/export/brick_workdir/bri
> ck2/data 49187 49188 Y 23117
> Brick ib-storage3:/export/brick_workdir/bri
> ck2/data 49160 49161 Y 3905
>
> # gluster volume info vol_workdir_amd
>
> Volume Name: vol_workdir_amd
> Type: Distribute
> Volume ID: 087d26ea-c6df-4cbe-94af-ecd87b59aedb
> Status: Started
> Number of Bricks: 4
> Transport-type: tcp,rdma
> Bricks:
> Brick1: ib-storage1:/export/brick_workdir/brick1/data
> Brick2: ib-storage3:/export/brick_workdir/brick1/data
> Brick3: ib-storage1:/export/brick_workdir/brick2/data
> Brick4: ib-storage3:/export/brick_workdir/brick2/data
> Options Reconfigured:
> performance.readdir-ahead: on
>
> # pdsh -w storage[1,3] df -h /export/brick_workdir/brick{1,2}
> storage3: Filesystem Size Used Avail Use% Mounted on
> storage3: /dev/mapper/st--block1-blk1--workdir
> storage3: 250G 34M 250G 1% /export/brick_workdir/brick1
> storage3: /dev/mapper/st--block2-blk2--workdir
> storage3: 250G 34M 250G 1% /export/brick_workdir/brick2
> storage1: Filesystem Size Used Avail Use% Mounted on
> storage1: /dev/mapper/st--block1-blk1--workdir
> storage1: 250G 33M 250G 1% /export/brick_workdir/brick1
> storage1: /dev/mapper/st--block2-blk2--workdir
> storage1: 250G 33M 250G 1% /export/brick_workdir/brick2
>
> # df -h /workdir/
> Filesystem Size Used Avail Use% Mounted on
> localhost:vol_workdir_amd.rdma
> 500G 67M 500G 1% /workdir
>
> # touch /workdir/test
> touch: impossible de faire un touch « /workdir/test »: Aucun fichier ou dossier de ce type
>
> # tail -30l /var/log/glusterfs/workdir.log
> Host Unreachable, Check your connection with IPoIB
> [2015-07-21 21:10:33.927673] W [rdma.c:1263:gf_rdma_cm_event_handler] 0-vol_workdir_amd-client-2: cma event RDMA_CM_EVENT_REJECTED, error 8 (me:10.0.4.1:1020 peer:10.0.4.1:49174)
> Host Unreachable, Check your connection with IPoIB
> [2015-07-21 21:10:37.877231] I [rpc-clnt.c:1819:rpc_clnt_reconfig] 0-vol_workdir_amd-client-0: changing port to 49173 (from 0)
> [2015-07-21 21:10:37.880556] I [rpc-clnt.c:1819:rpc_clnt_reconfig] 0-vol_workdir_amd-client-2: changing port to 49174 (from 0)
> [2015-07-21 21:10:37.914661] W [rdma.c:1263:gf_rdma_cm_event_handler] 0-vol_workdir_amd-client-0: cma event RDMA_CM_EVENT_REJECTED, error 8 (me:10.0.4.1:1021 peer:10.0.4.1:49173)
> Host Unreachable, Check your connection with IPoIB
> [2015-07-21 21:10:37.923535] W [rdma.c:1263:gf_rdma_cm_event_handler] 0-vol_workdir_amd-client-2: cma event RDMA_CM_EVENT_REJECTED, error 8 (me:10.0.4.1:1020 peer:10.0.4.1:49174)
> Host Unreachable, Check your connection with IPoIB
> [2015-07-21 21:10:41.883925] I [rpc-clnt.c:1819:rpc_clnt_reconfig] 0-vol_workdir_amd-client-0: changing port to 49173 (from 0)
> [2015-07-21 21:10:41.887085] I [rpc-clnt.c:1819:rpc_clnt_reconfig] 0-vol_workdir_amd-client-2: changing port to 49174 (from 0)
> [2015-07-21 21:10:41.919394] W [rdma.c:1263:gf_rdma_cm_event_handler] 0-vol_workdir_amd-client-0: cma event RDMA_CM_EVENT_REJECTED, error 8 (me:10.0.4.1:1021 peer:10.0.4.1:49173)
> Host Unreachable, Check your connection with IPoIB
> [2015-07-21 21:10:41.932622] W [rdma.c:1263:gf_rdma_cm_event_handler] 0-vol_workdir_amd-client-2: cma event RDMA_CM_EVENT_REJECTED, error 8 (me:10.0.4.1:1020 peer:10.0.4.1:49174)
> Host Unreachable, Check your connection with IPoIB
> [2015-07-21 21:10:44.682636] W [dht-layout.c:189:dht_layout_search] 0-vol_workdir_amd-dht: no subvolume for hash (value) = 1072520554
> [2015-07-21 21:10:44.682947] W [dht-layout.c:189:dht_layout_search] 0-vol_workdir_amd-dht: no subvolume for hash (value) = 1072520554
> [2015-07-21 21:10:44.683240] W [dht-layout.c:189:dht_layout_search] 0-vol_workdir_amd-dht: no subvolume for hash (value) = 1072520554
> [2015-07-21 21:10:44.683472] W [dht-diskusage.c:48:dht_du_info_cbk] 0-vol_workdir_amd-dht: failed to get disk info from vol_workdir_amd-client-0
> [2015-07-21 21:10:44.683506] W [dht-diskusage.c:48:dht_du_info_cbk] 0-vol_workdir_amd-dht: failed to get disk info from vol_workdir_amd-client-2
> [2015-07-21 21:10:44.683532] W [dht-layout.c:189:dht_layout_search] 0-vol_workdir_amd-dht: no subvolume for hash (value) = 1072520554
> [2015-07-21 21:10:44.683551] W [fuse-bridge.c:1970:fuse_create_cbk] 0-glusterfs-fuse: 18: /test => -1 (Aucun fichier ou dossier de ce type)
> [2015-07-21 21:10:44.683619] W [dht-layout.c:189:dht_layout_search] 0-vol_workdir_amd-dht: no subvolume for hash (value) = 1072520554
> [2015-07-21 21:10:44.683846] W [dht-layout.c:189:dht_layout_search] 0-vol_workdir_amd-dht: no subvolume for hash (value) = 1072520554
> [2015-07-21 21:10:45.886807] I [rpc-clnt.c:1819:rpc_clnt_reconfig] 0-vol_workdir_amd-client-0: changing port to 49173 (from 0)
> [2015-07-21 21:10:45.893059] I [rpc-clnt.c:1819:rpc_clnt_reconfig] 0-vol_workdir_amd-client-2: changing port to 49174 (from 0)
> [2015-07-21 21:10:45.920434] W [rdma.c:1263:gf_rdma_cm_event_handler] 0-vol_workdir_amd-client-0: cma event RDMA_CM_EVENT_REJECTED, error 8 (me:10.0.4.1:1021 peer:10.0.4.1:49173)
> Host Unreachable, Check your connection with IPoIB
> [2015-07-21 21:10:45.925292] W [rdma.c:1263:gf_rdma_cm_event_handler] 0-vol_workdir_amd-client-2: cma event RDMA_CM_EVENT_REJECTED, error 8 (me:10.0.4.1:1020 peer:10.0.4.1:49174)
> Host Unreachable, Check your connection with IPoIB
>
> I use GlusterFS in production since around 3 years without any block
> problem but now the situation is awesome since more than 3 weeks…
> Indeed, our production are down since roughly 3.5 weeks (with a lot
> and different problems with GlusterFS v3.5.3 and now with 3.7.2-3) and
> i need to restart it…
>
> Thanks in advance,
> Geoffrey
> ------------------------------------------------------
> Geoffrey Letessier
> Responsable informatique & ingénieur système
> UPR 9080 - CNRS - Laboratoire de Biochimie Théorique
> Institut de Biologie Physico-Chimique
> 13, rue Pierre et Marie Curie - 75005 Paris
> Tel: 01 58 41 50 93 - eMail: geoffrey.letessier at ibpc.fr
>
> Le 21 juil. 2015 à 19:36, Soumya Koduri <skoduri at redhat.com> a écrit :
>
> > From the following errors,
> >
> > [2015-07-21 14:36:30.495321] I [MSGID: 114020] [client.c:2118:notify] 0-vol_shared-client-0: parent translators are ready, attempting connect on transport
> > [2015-07-21 14:36:30.498989] W [socket.c:923:__socket_keepalive] 0-socket: failed to set TCP_USER_TIMEOUT 0 on socket 12, Protocole non disponible
> > [2015-07-21 14:36:30.499004] E [socket.c:3015:socket_connect] 0-vol_shared-client-0: Failed to set keep-alive: Protocole non disponible
> >
> > looks like setting TCP_USER_TIMEOUT value to 0 on the socket failed with error (IIUC) "Protocol not available".
> > Could you check if 'network.ping-timeout' is set to zero for that volume using 'gluster volume info'? Anyways from the code looks like 'TCP_USER_TIMEOUT' can take value zero. Not sure why it has failed.
> >
> > Niels, any thoughts?
> >
> > Thanks,
> > Soumya
> >
> > On 07/21/2015 08:15 PM, Geoffrey Letessier wrote:
> >> [2015-07-21 14:36:30.495321] I [MSGID: 114020] [client.c:2118:notify]
> >> 0-vol_shared-client-0: parent translators are ready, attempting connect
> >> on transport
> >> [2015-07-21 14:36:30.498989] W [socket.c:923:__socket_keepalive]
> >> 0-socket: failed to set TCP_USER_TIMEOUT 0 on socket 12, Protocole non
> >> disponible
> >> [2015-07-21 14:36:30.499004] E [socket.c:3015:socket_connect]
> >> 0-vol_shared-client-0: Failed to set keep-alive: Protocole non disponible
>
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