Messages in this thread | | | Subject | Re: [dm-devel] Block regression since 3.1-rc3 | From | Christophe Saout <> | Date | Fri, 30 Sep 2011 20:02:11 +0200 |
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Hello again,
> Today I was trying to boot a new 3.1 RC kernel on one of our server > machines and ran into a weird block-related crash. > > Whenever I was trying to access some filesystem on the external RAID, I > would soon run into the crash seen below, followed by a total lockup a > bit later. > > The external RAID is accessed via multipath and simple logical volumes > on top. [...] > > The bug seems to be introduced between rc2 and rc3. Up to rc2 everything > is fine, and rc3 and also the latest kernel shows this bug. From the git > log I can see that the block/ directory has seen some larger update, but > this is just a wild guess.
Actually, I just found out that reverting
commit 4853abaae7e4a2af938115ce9071ef8684fb7af4 Author: Jeff Moyer <jmoyer@redhat.com> Date: Mon Aug 15 21:37:25 2011 +0200
block: fix flush machinery for stacking drivers with differring flush flags
makes the problem disappear.
Let me know if I can help with further information.
Cheers, Christophe
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