kernel-packages team mailing list archive

[RoyK <roy@xxxxxxxxxxxxx>]

I looked at the code in 2.6.32 and I can't find the related bits in
handle_stripe6(). The prexor int isn't defined, and the checks after
set_bit(R5_Wantwrite, &dev->flags); aren't issued. I don't know enouch
about this code to see what's going on. I'm also not sure what really
triggers this bug. I tried setting up a raid6, failed two drives,
starting to write a bunch of deterministic data to the drives and
started to rebuild it - no errors could be detected, neither in metadata
or data.

I have a vm setup with lucid for this purpose, and I can allow access to
it for deveopers wanting to test.

roy

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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1364091

Title:
  Possible RAID-6 corruption

Status in “linux” package in Ubuntu:
  Triaged
Status in “mdadm” package in Ubuntu:
  Invalid

Bug description:
  It seems there's a bug in newer kernels that may lead to corruption on
  RAID-6. There's a fix, too

  http://lwn.net/Articles/608896/

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