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Message-Id: <201001302057.59529.rjw@sisk.pl> Date: Sat, 30 Jan 2010 20:57:59 +0100 From: "Rafael J. Wysocki" <rjw@...k.pl> To: Michael Breuer <mbreuer@...jas.com> Cc: linux-kernel@...r.kernel.org Subject: Re: Regressionhung task during raid rebuild 2.6.33 rc5 was: Re: 2.6.33RC3 hung task - jbd2/dm-1-8 (during raid rebuild) On Saturday 30 January 2010, Michael Breuer wrote: > On 1/10/2010 4:47 PM, Michael Breuer wrote: > > System crashed (watchdog reset). > > > > Was doing a raid rebuild at the time (raid6). > > > > I typed, 'yumdownloader --source virtlib' ... system froze, then > > rebooted on the watchdog reset. > > > > I've attached the log extract from the event as well as dmesg. > > > > > Hit this again - system doesn't crash now - just get the hung task > warning (log extract attached). System seems to keep running (albeit the > rebuild is incredibly slow on 2.6.33 rc5 - approx 6500K/sec vs. about > 80,000K/sec on 2.6.32.4. > > Looks like it may be triggered by disk io during the rebuild. This time > I had typed, "sync." "sync" hung for a long while but did eventually > complete. Is this the bug tracked as http://bugzilla.kernel.org/show_bug.cgi?id=15125 ? Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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