[DRBD-user] DRBD 0.8rc2 deadlock "WFBitMap" ?

Ralf Schenk rs at databay.de
Mon Jan 22 00:33:43 CET 2007


Hello

After successfully creating an 2 DRBD Devices on top of LVM, I tried
different net settings for performance optimisation.

I always edited the configuration file, copied it to the remote host and
issued a "drbdadm adjust RESSOURCNAME".

Yesterday my ressource "vm02" stopped working in a state "WFBitMap"
after a "drbdadm adjust vm02"

Today I tested with the remaining ressource "vm01" and after a few
changes and benchmarking this ressource stopped working, too.

my cat /proc/drbd shows:
version: 8.0rc2 (api:86/proto:86)
SVN Revision: 2704 build by root at server, 2007-01-18 16:05:48
 0: cs:WFBitMapS st:Primary/Secondary ds:UpToDate/UpToDate C r---
    ns:0 nr:0 dw:0 dr:0 al:0 bm:127 lo:0 pe:0 ua:0 ap:0
        resync: used:0/31 hits:0 misses:0 starving:0 dirty:0 changed:0
        act_log: used:0/127 hits:0 misses:0 starving:0 dirty:0 changed:0
 1: cs:WFBitMapT st:Secondary/Primary ds:UpToDate/UpToDate C r---
    ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0
        resync: used:0/31 hits:0 misses:0 starving:0 dirty:0 changed:0
        act_log: used:0/127 hits:0 misses:0 starving:0 dirty:0 changed:0


I rebooted and tried to outdate the secondary(s) to do a full resync but
that didn't work.

What can I do to recover from this situation ?

-- 
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Ralf Schenk
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rs at databay.de

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