On Wed, 2001-10-31 at 20:54, Andrew Klaassen wrote:
> Okay...
>
> Just had an error on a production fileserver. If I'm reading
> the error correctly, it means that there was an I/O error on the
> log device, which caused XFS to shut down. The I/O error
> appears to have been the result of XFS sending multiple requests
> for the same block to the RAID subsystem (whatever that means).
>
> I killed all daemons accessing the device, unmounted the array,
> ran xfs_repair, and put the array back into service.
>
> Did I do the right thing?
>
> Is my diagnosis correct?
>
> Here's the relevant entry from my /etc/fstab:
>
> /dev/md2 /n/bubba1 xfs rw,defaults,logbufs=4,logdev=/dev/md3 0 0
>
> ...and here are the error messages:
>
> Oct 31 20:29:15 bubba kernel: raid5: multiple 1 requests for sector 65277048
> Oct 31 21:24:00 bubba kernel: I/O error in filesystem ("md(9,2)") meta-data
> dev 0x903 block 0x17f07
> Oct 31 21:24:00 bubba kernel: ("<NULL>") error -1070893103 buf count 5
> Oct 31 21:24:00 bubba kernel: xfs_force_shutdown(md(9,2),0x2) called from
> line 940 of file xfs_log.c. Return address = 0xc01c329c
> Oct 31 21:24:00 bubba kernel: Log I/O Error Detected. Shutting down
> filesystem: md(9,2)
>
> Hmmm.... I notice there's a long delay between the "multiple 1
> requests..." and the filesystem shutdown. Perhaps they have
> nothing to do with each other - and yet that's the only
> "multiple 1 requests..." error in the past week of logs.
>
> Andrew Klaassen
Which kernel version was this? Also, can you send me the raidtab which
defines the volume?
Thanks
Steve
--
Steve Lord voice: +1-651-683-3511
Principal Engineer, Filesystem Software email: lord@xxxxxxx
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