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On 3/23/12 3:22 PM, Gabriel VLASIU wrote:

On Fri, 23 Mar 2012, Eric Sandeen wrote:

quoted

It wouldn't be expected to.

quoted

Please see also

quoted

https://bugzilla.redhat.com/show_bug.cgi?id=671015

quoted

and suggestions for tracing the error, so we know exactly which case this is.

# cat /sys/kernel/debug/tracing/trace
# tracer: nop
#
# entries-in-buffer/entries-written: 2/2   #P:2
#
#                              _-----=> irqs-off
#                             / _----=> need-resched
#                            | / _---=> hardirq/softirq
#                            || / _--=> preempt-depth
#                            ||| /     delay
#           TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
#              | |       |   ||||       |         |
         xfs_fsr-3895  [000] .... 108290.726664: xfs_swap_extent_before: dev 7:0 ino 0x400dd2e4 (target), btree format, num_extents 1463, broot size 120, fork offset 104
         xfs_fsr-3895  [000] .... 108290.726666: xfs_swap_extent_before: dev 7:0 ino 0x1c4917 (temp), extent format, num_extents 1, broot size 0, fork offset 104

Should I add the trace to the bugzilla?

Sure, that'd be great.

That's a little different case than the other trace provided in that bug.  TBH my mind is not fully engaged enough to see which case in xfs_swap_extents_check_format() is tripping this up.  I think it's this:

        /* Reciprocal target->temp btree format checks */
        if (ip->i_d.di_format == XFS_DINODE_FMT_BTREE) {
                if (XFS_IFORK_BOFF(tip) &&
                    ip->i_df.if_broot_bytes > XFS_IFORK_BOFF(tip))
                        return EINVAL;

Which means (I think) that the new temp inode doesn't have enough room before the attribute fork, compared to the original inode.

If you want to supply an xfs_metadump metadata image (in public or in private), we would have a reproducer.  It obfuscates most metadata by default.

- -Eric

Thank you.


Sincerely,
Gabriel

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