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drbd-user: Re: [DRBD-user] Case of stalled connection.

Re: [DRBD-user] Case of stalled connection.

From: Lars Ellenberg <lars.ellenberg_at_nospam>
Date: Mon Mar 11 2013 - 09:52:38 GMT
To: drbd-user@lists.linbit.com

On Mon, Mar 04, 2013 at 04:44:37PM -0500, Jesus Climent wrote:
> Any luck with this?

Not enough context to be able to debug this.
Stack traces look normal,
and even the "(stalled)" thingy in /proc/drbd
does not need to be a cause of concern on a busy server.

Maybe it helps if you correlate the lower level device IO queues,
and the network socket buffers as well.

> On Wed, Feb 27, 2013 at 2:26 PM, Jesus Climent <climent@gmail.com> wrote:
> > Hi
> >
> > As promised, I am posting as much information about this case, as I
> > managed to reproduce it consistently. In the traces there is a udevd
> > line that looks like it has something to do with the problem, but I am
> > still posting to see if someone has some more info:
> >
> > return code = 0
> > ------------------------------------------------
> > node: hostname10
> > version: 8.3.15 (api:88/proto:86-97)
> > GIT-hash: 0ce4d235fc02b5c53c1c52c53433d11a694eab8c build by
> > root@builder, 2012-12-20 21:52:53
> > 0: cs:SyncSource ro:Primary/Primary ds:UpToDate/Inconsistent C r---b-
> > ns:1885280 nr:0 dw:5204860 dr:1351945 al:8066 bm:2621 lo:1 pe:9600
> > ua:0 ap:0 ep:1 wo:d oos:112
> > [===================>] sync'ed:100.0% (112/368)K
> > finish: 2:14:20 speed: 0 (0) K/sec (stalled)
> >
> > return code = 0
> > ------------------------------------------------
> > node: hostname9
> > version: 8.3.15 (api:88/proto:86-97)
> > GIT-hash: 0ce4d235fc02b5c53c1c52c53433d11a694eab8c build by
> > root@builder, 2012-12-20 21:52:53
> > 0: cs:SyncTarget ro:Primary/Primary ds:Inconsistent/UpToDate C r---b-
> > ns:0 nr:1885280 dw:5450528 dr:847388 al:8159 bm:2603 lo:0 pe:14
> > ua:9624 ap:1 ep:9625 wo:d oos:56
> > [===================>] sync'ed:100.0% (56/368)K
> > finish: 1:05:23 speed: 0 (0) want: 61,440 K/sec (stalled)
> >
> >
> > Traces (echo t > /proc/sysrq-trigger) are here:
> >
> > http://db.tt/uqm0g6rW
> > http://db.tt/a74nPL2i
> >
> > dpkg -l udev:
> > udev 164-3
> >
> > --
> > climent () gmail ! com
>
>
>
> --
> climent () gmail ! com
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-- : Lars Ellenberg : LINBIT | Your Way to High Availability : DRBD/HA support and consulting http://www.linbit.com DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. __ please don't Cc me, but send to list -- I'm subscribed _______________________________________________ drbd-user mailing list drbd-user@lists.linbit.com http://lists.linbit.com/mailman/listinfo/drbd-user