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    SubjectRe: [Bug #27842] [regression?] hang with 2.6.37 on a BTRFS test machine
    Date
    On Thursday, February 03, 2011, Martin Steigerwald wrote:
    > Added linux-btrfs and Helmut Hullen, who seemed to experience hangs on a
    > T23 with BTRFS as well, to Cc.
    >
    > Am Thursday 03 February 2011 schrieb Rafael J. Wysocki:
    > > This message has been generated automatically as a part of a report
    > > of regressions introduced between 2.6.36 and 2.6.37.
    > >
    > > The following bug entry is on the current list of known regressions
    > > introduced between 2.6.36 and 2.6.37. Please verify if it still should
    > > be listed and let the tracking team know (either way).
    > >
    > >
    > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=27842
    > > Subject : [regression?] hang with 2.6.37 on a BTRFS test machine
    > > Submitter : Martin Steigerwald <Martin@lichtvoll.de>
    > > Date : 2011-01-23 12:06 (11 days old)
    > > Message-ID : <201101231306.23069.Martin@lichtvoll.de>
    > > References : http://marc.info/?l=linux-kernel&m=129578445613283&w=2
    >
    > Well I now tested with 2.6.36 for more than a week and I did not see any
    > of such hangs upto now. The machine seems table with 2.6.36. So I think
    > its really an regression of 2.6.37.
    >
    > I am stuck with what to try next. Since trying to track it down to a
    > specific commit appears too involved for me and its appears also quite
    > laborious to get any value debug information out of the kernel - cause it
    > can take days for the bug to appear -, I am inclined to either test with
    > 2.6.37.1 once its available or just give it a go with 2.6.38-rc3 or rc4.
    > Maybe 2.6.38-rc3/4 would be the best bet, I have seen a report on the
    > btrfs mailing list of 2.6.38 fixing a BTRFS hang bug that appeared with
    > 2.6.37. I am just not sure whether its related or not.
    >
    > Re: [PATCH v2]Btrfs: pwrite blocked when writing from the mmaped buffer of
    > the same page
    > http://marc.info/?l=linux-btrfs&m=129623925116051&w=2
    >
    > There is another thread about 2.6.37 related BTRFS hang:
    >
    > flush-btrfs-1 hangs when building openwrt
    > http://marc.info/?l=linux-btrfs&m=129594547616298&w=2
    >
    > I will add this as comment to the bug report as well.

    Thanks for the update.

    Rafael


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