Hi Ian, Chapter 7 of the DTrace book has some examples of how to look at iSCSI target and initiator behaviour. -- richard
On Jun 28, 2012, at 10:47 PM, Ian Collins wrote: > I'm trying to work out the case a remedy for a very sick iSCSI pool on a > Solaris 11 host. > > The volume is exported from an Oracle storage appliance and there are no > errors reported there. The host has no entries in its logs relating to the > network connections. > > Any zfs or zpool commands the change the state of the pool (such as zfs mount > or zpool export) hang and can't be killed. > > fmadm faulty reports: > > Jun 27 14:04:24 536fb2ad-1fca-c8b2-fc7d-f5a4a94c165d ZFS-8000-FD Major > > Host : taitaklsc01 > Platform : SUN-FIRE-X4170-M2-SERVER Chassis_id : 1142FMM02N > Product_sn : 1142FMM02N > > Fault class : fault.fs.zfs.vdev.io > Affects : zfs://pool=fileserver/vdev=68c1bdefa6f97db8 > faulted but still in service > Problem in : zfs://pool=fileserver/vdev=68c1bdefa6f97db8 > faulted but still in service > > Description : The number of I/O errors associated with a ZFS device exceeded > acceptable levels. Refer to > http://sun.com/msg/ZFS-8000-FD > for more information. > > The zpool status paints a very gloomy picture: > > pool: fileserver > state: ONLINE > status: One or more devices is currently being resilvered. The pool will > continue to function, possibly in a degraded state. > action: Wait for the resilver to complete. > scan: resilver in progress since Fri Jun 29 11:59:59 2012 > 858K scanned out of 15.7T at 43/s, (scan is slow, no estimated time) > 567K resilvered, 0.00% done > config: > > NAME STATE READ WRITE CKSUM > fileserver ONLINE 0 1.16M 0 > c0t600144F096C94AC700004ECD96F20001d0 ONLINE 0 1.16M 0 > (resilvering) > > errors: 1557164 data errors, use '-v' for a list > > Any ideas how to determine the cause of the problem and remedy it? > > -- > Ian. > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss -- ZFS Performance and Training richard.ell...@richardelling.com +1-760-896-4422
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