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    Subjectsync-Regression in
    I recently installed on our postfix/dovecot-based
    mailboxserver. Previously, 2.6.28 and have been running there
    without a hitch.

    Now with I had two major lockups: All writes to the users'
    Maildirs (on ext4) would stall, the load would rise, "sync" would never

    I had to "reboot -f -n" to get the machine back. All hanging processes
    were unkillable, even with kill -9.

    There was NOTHING in dmesg, nothing in the log either. No indication
    of filesystem errors or anything.

    Lookin at the
    I see changes to

    fs: sys_sync fix
    fs: sync_sb_inodes fix
    fs: remove WB_SYNC_HOLD

    Since the mailserver uses sync() extensively (both dovecot and
    postfix), maybe that's the culprit?

    Note: I'm really just guessing here!
    Back to for now.

    Ralf Hildebrandt
    Charite - Universitätsmedizin Berlin Tel. +49 (0)30-450 570-155
    Geschäftsbereich IT | Abt. Netzwerk Fax. +49 (0)30-450 570-962
    Hindenburgdamm 30 | 12200 Berlin
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      Last update: 2009-01-27 10:51    [W:0.020 / U:4.124 seconds]
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