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Re: [Linux-cluster] scsi reservation issue



Christopher Barry wrote:
Greetings all,

I have 2 vmware esx servers, each hitting a NetApp over FS, and each
with 3 RHCS cluster nodes trying to mount a gfs volume.

All of the nodes (1,2,& 3) on esx-01 can mount the volume fine, but none
of the nodes in the second esx box can mount the gfs volume at all, and
I get the following error in dmesg:

Are you intentionally trying to use scsi reservations as a fence method? It sounds like the nodes on esx-01 are creating reservations, but the nodes on the second esx box are not registering with the device and therefore are unable to mount the filesystem. Creation of reservations and registrations is handled by the scsi_reserve init script, which should be run at startup on all nodes in the cluster. You can check to see what devices a node is registered for before you mount the filesystem by doing /etc/init.d/scsi_reservce status. If your nodes are not registered with the device and a reservation exists then you won't be able to mount.

Lock_Harness 2.6.9-72.2 (built Apr 24 2007 12:45:38) installed
GFS 2.6.9-72.2 (built Apr 24 2007 12:45:54) installed
GFS: Trying to join cluster "lock_dlm", "kop-sds:gfs_home"
Lock_DLM (built Apr 24 2007 12:45:40) installed
GFS: fsid=kop-sds:gfs_home.2: Joined cluster. Now mounting FS...
GFS: fsid=kop-sds:gfs_home.2: jid=2: Trying to acquire journal lock...
GFS: fsid=kop-sds:gfs_home.2: jid=2: Looking at journal...
GFS: fsid=kop-sds:gfs_home.2: jid=2: Done
scsi2 (0,0,0) : reservation conflict
SCSI error : <2 0 0 0> return code = 0x18
end_request: I/O error, dev sdc, sector 523720263
scsi2 (0,0,0) : reservation conflict
SCSI error : <2 0 0 0> return code = 0x18
end_request: I/O error, dev sdc, sector 523720271
scsi2 (0,0,0) : reservation conflict
SCSI error : <2 0 0 0> return code = 0x18
end_request: I/O error, dev sdc, sector 523720279
GFS: fsid=kop-sds:gfs_home.2: fatal: I/O error
GFS: fsid=kop-sds:gfs_home.2:   block = 65464979
GFS: fsid=kop-sds:gfs_home.2:   function = gfs_logbh_wait
GFS: fsid=kop-sds:gfs_home.2:   file
= /builddir/build/BUILD/gfs-kernel-2.6.9-72/smp/src/gfs/dio.c, line =
923
GFS: fsid=kop-sds:gfs_home.2:   time = 1193838678
GFS: fsid=kop-sds:gfs_home.2: about to withdraw from the cluster
GFS: fsid=kop-sds:gfs_home.2: waiting for outstanding I/O
GFS: fsid=kop-sds:gfs_home.2: telling LM to withdraw
lock_dlm: withdraw abandoned memory
GFS: fsid=kop-sds:gfs_home.2: withdrawn
GFS: fsid=kop-sds:gfs_home.2: can't get resource index inode: -5


Does anyone have a clue as to where I should start looking?


Thanks,
-C

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