[Bug 129260] Re: corruption when using md raid1 on amd64 smp

[Joseph Fisk]

** Summary changed:

- opteron amd64 data corruption
+ corruption when using md raid1 on amd64 smp

** Description changed:

  Binary package hint: linux-image-2.6.15-28-amd64-server
  
  md5sum returns inconsistent results when run repeatedly on a large text
- file stored on a linux software (md) raid1 volume.
+ file stored on a linux software (md) raid1 volume (ext3).  md5sum works
+ fine when using a single standalone disk (also ext3).
  
  This is not the iommu issue experienced by other amd64 users:
  https://bugs.launchpad.net/ubuntu/+source/linux-
  source-2.6.15/+bug/128568
  
  However, this system did experience the iommu issue and is currently
  running with iommu=soft as a workaround.
  
  This is happening on a dual dual-core opteron system with 8GB
  registered/ecc memory running up-to-date LTS.  The system ran memtest86
  for over 75 passes with no errors.
  
  I started a thread about this problem at
  http://ubuntuforums.org/showthread.php?p=3101571 , but another user
  suggested it was turning into a bug report.  Some more background info
  is available there.

-- 
corruption when using md raid1 on amd64 smp
https://bugs.launchpad.net/bugs/129260
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