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Message-id: <4B648FD8.6060904@majjas.com> Date: Sat, 30 Jan 2010 15:00:24 -0500 From: Michael Breuer <mbreuer@...jas.com> To: "Rafael J. Wysocki" <rjw@...k.pl> 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 1/30/2010 2:57 PM, Rafael J. Wysocki wrote: > 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 > Yes - although the behavior is different on rc5 vs. rc3. I think it's the same. -- 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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