Re: XFS crashes with xfs_iunlink_remove: xfs_imap returned error -22

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On Tue, Apr 18, 2017 at 07:32:04PM +0200, Stefan Priebe - Profihost AG wrote:
> Hi,
> 
> the FS is mounted and in production. I didn't know how to dump a running FS.

Since there's no lvm here, unmounting, metadumping, and mounting is
probably the only reasonable option.

--D

> 
> Greets,
> Stefan
> 
> Am 18.04.2017 um 18:59 schrieb Darrick J. Wong:
> > On Tue, Apr 18, 2017 at 09:01:17AM +0200, Stefan Priebe - Profihost AG wrote:
> >> System crashed again but output was the same.
> >>
> >> 2017-04-18 07:30:18     XFS (sda3): xfs_iunlink_remove: xfs_imap
> >> returned error -22.
> >> 2017-04-18 07:30:18     XFS (sda3): xfs_inactive_ifree: xfs_ifree
> >> returned error -22
> >> 2017-04-18 07:30:18     XFS (sda3): xfs_do_force_shutdown(0x1) called
> >> from line 1872 of file fs/xfs/xfs_inode.c. Return address =
> >> 0xffffffff9b33cf93
> >> 2017-04-18 07:30:18     XFS (sda3): I/O Error Detected. Shutting down
> >> filesystem
> >> 2017-04-18 07:30:18     XFS (sda3): Please umount the filesystem and
> >> rectify the problem(s)
> >> 2017-04-18 07:30:18     XFS (sda3): xfs_log_force: error -5 returned.
> >> 2017-04-18 07:30:28     XFS (sda3): xfs_log_force: error -5 returned.
> >> 2017-04-18 07:30:58     XFS (sda3): xfs_log_force: error -5 returned.
> >> 2017-04-18 07:31:28     XFS (sda3): xfs_log_force: error -5 returned.
> > 
> > That looks like some sort of problem with a garbage value in
> > di_next_unlinked that we hit when removing inodes from the AGI unlinked
> > inode list.
> > 
> > Could you take a metadump and get it to us for further analysis?
> > Eric might be interested. ;)
> > 
> > --D
> > 
> >>
> >> Stefan
> >> Am 17.04.2017 um 17:06 schrieb Stefan Priebe - Profihost AG:
> >>>
> >>> Am 17.04.2017 um 17:04 schrieb Stefan Priebe - Profihost AG:
> >>>> Hi Eric,
> >>>>
> >>>>> On 4/17/17 2:54 AM, Stefan Priebe wrote:
> >>>>>> Hello list,
> >>>>>>
> >>>>>> one of my servers is crashing every night with the following errors:
> >>>>>>
> >>>>>> XFS (sda3): xfs_iunlink_remove: xfs_imap returned error -22.
> >>>>>> XFS (sda3): xfs_inactive_ifree: xfs_ifree returned error -22 XFS
> >>>>>
> >>>>>
> >>>>> -EINVAL
> >>>>>
> >>>>>> (sda3): xfs_do_force_shutdown(0x1) called from line 1872 of file
> >>>>>> fs/xfs/xfs_inode.c. Return address = 0xffffffff9e33cf53 XFS (sda3):
> >>>>>> I/O Error Detected. Shutting down filesystem
> >>>>>>
> >>>>>> I ran xfs_repair v4.9.0 but it seems unable to recover / fix this
> >>>>>> error. I'm running an OpenSUSE 42.2 kernel based von v4.4. Is there
> >>>>>> anything i can do to fix this?
> >>>>>
> >>>>> # echo 11 > /proc/sys/fs/xfs/error_level
> >>>>>
> >>>>> to get a full backtrace from the shutdown (if you didn't already)
> >>>>> so we can at least see what process is encountering the errors.
> >>>>
> >>>> done.
> >>>>
> >>>>> I have a hunch, though - are you running xfs_fsr overnight?
> >>>>
> >>>> No only rsync from dev/a to dev/b. But the reported device is a (source).
> >>>
> >>> verified: but that job is done 3-4 hours before crashing.
> >>>
> >>>>
> >>>> I also have two empty folders in /lost+found which i cannot delete. Even
> >>>> after running xfs_repair.
> >>>>
> >>>> # rm -r /lost+found/
> >>>> rm: cannot remove ‘/lost+found/536874081’: Directory not empty
> >>>> rm: cannot remove ‘/lost+found/536874085’: Directory not empty
> >>>>
> >>>> Greets,
> >>>> Stefan
> >>>>
> >> --
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