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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1596550

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: trusty

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https://bugs.launchpad.net/bugs/1596550

Title:
  Metadata corruption detected at xfs_attr3_leaf_write_verify+0xd7/0xf0

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  We noticed a XFS metadata corruption once we ran a lot of small write
  IOs on SSDs in our OpenStack swift environment:

  [1468860.211158] XFS (sdax): Metadata corruption detected at xfs_attr3_leaf_write_verify+0xd7/0xf0 [xfs], block 0x7c99480
  [1468860.211195] XFS (sdax): Unmount and run xfs_repair
  [1468860.211215] XFS (sdax): First 64 bytes of corrupted metadata buffer:
  [1468860.211247] ffff880630f66000: 00 00 00 00 00 00 00 00 fb ee 00 00 00 00 00 00  ................
  [1468860.211268] ffff880630f66010: 10 00 00 00 00 20 0f e0 00 00 00 00 00 00 00 00  ..... ..........
  [1468860.211289] ffff880630f66020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  [1468860.211309] ffff880630f66030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  [1468860.211328] XFS (sdax): xfs_do_force_shutdown(0x8) called from line 1254 of file /build/linux-lts-xenial-7RlTta/linux-lts-xenial-4.4.0/fs/xfs/xfs_buf.c.  Return address = 0x
  ffffffffc068f616
  [1468860.212214] XFS (sdax): Corruption of in-memory data detected.  Shutting down filesystem
  [1468860.212232] XFS (sdax): Please umount the filesystem and rectify the problem(s)
  [1468860.212323] XFS (sdax): xfs_do_force_shutdown(0x1) called from line 315 of file /build/linux-lts-xenial-7RlTta/linux-lts-xenial-4.4.0/fs/xfs/xfs_trans_buf.c.  Return address
   = 0xffffffffc06bdda2
  [1468860.261436] XFS (sdax): xfs_log_force: error -5 returned.

  This error is reported with linux-generic-lts-xenial @4.4.0.22.12 on a
  XFS filesystem formatted with 1024 as inode size and mounted with

  rw,noatime,nodiratime,attr2,nobarrier,inode64,logbufs=8,sunit=512,swidth=512,noquota

  
  For us this issue seems to be reproducible after several hours of stress testing.

  cat /proc/version_signature
  Ubuntu 4.4.0-22.40~14.04.1-generic 4.4.8

  Description:    Ubuntu 14.04.3 LTS
  Release:        14.04

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