[DRBD-user] drbd locked and blocks other processes

Lars Ellenberg Lars.Ellenberg at linbit.com
Wed Jul 12 09:51:06 CEST 2006

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


/ 2006-07-12 09:01:33 +0200
\ Wim Ceulemans:
> Hi
> 
> We observed that drbd was completely locked (in kernel thread?). All drbdsetup commands blocked and were not executed. This was after a 
> short network failure. The drbd log is below. Some other running processes like squid where also locked, didn't work anymore and could 
> not be killed and restarted.
> We are using drbd-0.7.14

> Anyone seen this before? Could this be fixed in a more recent drbd version?

it may have been this:

0.7.18 (api:78/proto:74)
-----
 * Under high memory pressure it was possible to hit a deadlock 
   on a kmalloc(). Changed the GFP mask, it is no longer possible to
   deadlock it with memory pressure.

and some more esotheric but related fixes in 0.7.19.

-- 
: Lars Ellenberg                                  Tel +43-1-8178292-0  :
: LINBIT Information Technologies GmbH            Fax +43-1-8178292-82 :
: Schoenbrunner Str. 244, A-1120 Vienna/Europe   http://www.linbit.com :
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