Re: "xfs_log_force: error 5 returned." for drive that was removed.

On Wed, May 04, 2016 at 10:48:13AM -0500, Joe Wendt wrote:

   Thanks for the reply, and I'm sorry for the delay. Another admin
   rebooted the server before I had a chance to collect more info. I'll
   take a look at the other thread in case it comes up again. I think
   we'll avoid the lazy-unmount in the future though.
   Thanks again!
   -Joe

It certainly looks the same problem, which should be fixed by the patchset we
are working on, to add a configurable behavior for different kinds of errors.

   On Mon, Apr 18, 2016 at 1:54 PM, Carlos Maiolino
   <[1]cmaiolino@redhat.com> wrote:

   On Sun, Apr 17, 2016 at 09:33:27AM -0500, Joe Wendt wrote:
   >    Hello! This may be a silly question or an interesting one...
   >    We had a drive fail in a production server, which spawned this
   error in
   >    the logs:
   >    XFS (sde1): xfs_log_force: error 5 returned.
   >    The dead array was lazy-unmounted, and the drive was hot-swapped,
   but
   >    when the RAID array was rebuilt, it came online as /dev/sdk
   instead of
   >    /dev/sde.
   >    Now /dev/sde1 doesn't exist in the system, but we still see this
   >    message every 30 seconds. I'm assuming a reboot will clear out
   whatever
   >    is still trying to access sde1, but I'm trying to avoid that if
   >    possible. Could someone point me in the direction of what XFS
   might
   >    still be trying to do with that device?
   >    lsof hasn't given me any clues. I can't run xfs_repair on a volume
   that
   >    isn't there. I haven't been able to find anything similar yet
   online.
   >    Any help would be greatly appreciated!
   >    Thanks,
   >    Joe

     I believe this is the same problem being discussed in this thread:
     XFS hung task in xfs_ail_push_all_sync() when unmounting FS after
     disk
     failure/recovery.
     Can you get a stack dump of the system (sysrq-t) and post it in some
     pastebin?
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     --
     Carlos
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References

   1. mailto:cmaiolino@redhat.com
   2. mailto:xfs@oss.sgi.com
   3. http://oss.sgi.com/mailman/listinfo/xfs
   4. mailto:xfs@oss.sgi.com
   5. http://oss.sgi.com/mailman/listinfo/xfs

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-- 
Carlos

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