Messages in this thread | | | Date | Tue, 27 Jan 2009 10:35:33 +0100 | From | Ralf Hildebrandt <> | Subject | sync-Regression in 2.6.28.2? |
| |
I recently installed 2.6.28.2 on our postfix/dovecot-based mailboxserver. Previously, 2.6.28 and 2.6.28.1 have been running there without a hitch.
Now with 2.6.28.2 I had two major lockups: All writes to the users' Maildirs (on ext4) would stall, the load would rise, "sync" would never return.
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 http://www.eu.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.2 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 2.6.28.1 for now.
-- Ralf Hildebrandt Ralf.Hildebrandt@charite.de 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |