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Re: [DRBD-user] Crash on 2.6.22

Previous thread: 2.6.23-rc8: cannot make netconsole work by Andrey Borzenkov on Friday, September 28, 2007 - 5:27 am. (3 messages)

Next thread: Re: Serial ATA does not find partitions (Hitachi HD, new? ATI controller) where old SATA works by Tejun Heo on Friday, September 28, 2007 - 5:45 am. (10 messages)
[view original message]
From: Laurent CARON <lcaron@...>
To: <linux-kernel@...>
Cc: <drbd-user@...>
Subject: Crash on 2.6.22
Date: Friday, September 28, 2007 - 5:00 am

Hi,


I did experience a quite strange problem (at least for me) on the first

node of our 2 node cluster.


This is basically an imap/smtp/http proxy server.


One of the imapd processes started to use a lot of cpu, memory... this

morning.


Oomkiller showed up and killed slapd, imapd, amavisd....


I then restarted those processes manually, and it went fine.


A few moments later i got the following messages on my ssh terminal:


kernel: Bad page state in process 'swapper'

kernel: Bad page state in process 'swapper'

kernel: page:c1032a40 flags:0x40000400 mapping:00000000 mapcount:0 count:0

kernel: page:c1032a40 flags:0x40000400 mapping:00000000 mapcount:0 count:0

kernel: Trying to fix it up, but a reboot is needed

kernel: Trying to fix it up, but a reboot is needed

kernel: Backtrace:

kernel: Backtrace:

kernel: Bad page state in process 'swapper'

kernel: Bad page state in process 'swapper'

kernel: page:c1032a40 flags:0x40000400 mapping:00000000 mapcount:0 count:0

kernel: page:c1032a40 flags:0x40000400 mapping:00000000 mapcount:0 count:0

kernel: Trying to fix it up, but a reboot is needed

kernel: Trying to fix it up, but a reboot is needed

kernel: Backtrace:

kernel: Backtrace:


The machine then completely locked, and did reboot (thanks to the watchdog).


This server is a HP DL380G5 with 12Gb memory, 8 SAS Disks, .... a quite

standard box.


The $HOME directories are stored on a drbd (version: 0.7.24

(api:79/proto:74)) partition (with an XFS filesystem).


The only 'non standard' thing I did use is a swap file instead of a swap

partition.


$ free             total       used       free     shared    buffers

 cached

Mem:      12471932    7420364    5051568          0       3984    6680868

-/+ buffers/cache:     735512   11736420

Swap:       393208          0     393208


$ grep swap /etc/fstab

/var/tmp/swapfile swap    swap    defaults    0   0


Might this be the (or one of the) cause of this problem ?


.config is available here: [ message continues ]
" title="http://zenon.apartia.fr/stuff/conf...
[ message continues ]
">http://zenon.apartia.fr/stuff/conf...
[ message continues ]

[view original message]
From: Hannes Dorbath <light@...>
To: Laurent CARON <lcaron@...>
Cc: <linux-kernel@...>, <drbd-user@...>
Subject: Re: [DRBD-user] Crash on 2.6.22
Date: Friday, September 28, 2007 - 5:05 am

Was the deadlock with 2.6.22 only in 0.8.x? Is 0.7.x fine with 2.6.22?


--

Regards,

Hannes Dorbath

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[view original message]
From: Stefan Seifert <nine@...>
To: Hannes Dorbath <light@...>
Cc: Laurent CARON <lcaron@...>, <linux-kernel@...>, <drbd-user@...>
Subject: Re: [DRBD-user] Crash on 2.6.22
Date: Friday, September 28, 2007 - 5:21 am

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The deadlock also occures with 0.7.x. A patch for that is floating around.


Regards,

Stefan Seifert


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[view original message]
From: Laurent CARON <lcaron@...>
To: Stefan Seifert <nine@...>
Cc: Hannes Dorbath <light@...>, <linux-kernel@...>, <drbd-user@...>, Lars Ellenberg <lars.ellenberg@...>
Subject: Re: [DRBD-user] Crash on 2.6.22
Date: Friday, September 28, 2007 - 5:25 am

Here is a transcript from a mail I sent to Lars Ellenberg


It should 'normally' be fixed.


Am I wrong ?


Thanks


now, since you are so pushy today  :)

I just checked in something (r3062),

which should do the job, but is untested by me so far.

please test and report back.

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[view original message]
From: Laurent CARON <lcaron@...>
To: Hannes Dorbath <light@...>
Cc: <linux-kernel@...>, <drbd-user@...>
Subject: Re: [DRBD-user] Crash on 2.6.22
Date: Friday, September 28, 2007 - 5:12 am

I only experienced it with 2.6.22.


Since I pulled the latest svn tree of drbd 0.7.X, it should be pretty

deadlock safe.


Isn't it ?


Laurent

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Previous thread: 2.6.23-rc8: cannot make netconsole work by Andrey Borzenkov on Friday, September 28, 2007 - 5:27 am. (3 messages)

Next thread: Re: Serial ATA does not find partitions (Hitachi HD, new? ATI controller) where old SATA works by Tejun Heo on Friday, September 28, 2007 - 5:45 am. (10 messages)