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

Ralf Schenk rs at databay.de
Mon Jan 22 19:09:37 CET 2007


Philipp Reisner schrieb:

> drbdadm down all ; drbdadm up all

That doesn't work: Error is:
Child process does not terminate!
Exiting.
No response from the DRBD driver! Is the module loaded ?

(Of course the module is loaded)

> But, please post your excerpts from the kernel logs (of both machines) 
> of the incident.
> And tell us if the clocks of the machines are in sync (with NTP), or
> what time difference you have there.

Both nodes dates are in sync with ntp.

Ok what I did now: created the meta-data completely from scratch on both
nodes (drbdadm create-md vm0[1,2]). I started drbd (/etc/init.d/drbd start).
I set each of the two nodes primary for one drbd device (drbdadm primary
 -o vm0[1,2]). I expected drbd to start a full resync...

But nothing:
root at hosta:~# cat /proc/drbd
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:Secondary/Secondary ds:UpToDate/Inconsistent 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
 1: cs:WFBitMapT st:Secondary/Primary ds:Inconsistent/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

Here ist the kernel log:

Jan 22 18:42:34 hosta kernel: drbd: initialised. Version: 8.0rc2
(api:86/proto:86)
Jan 22 18:42:34 hosta kernel: drbd: SVN Revision: 2704 build by
root at server, 2007-01-18 16:05:48
Jan 22 18:42:34 hosta kernel: drbd: registered as block device major 147
Jan 22 18:42:34 hosta kernel: drbd: minor_table @ 0xffff8801eff62880
Jan 22 18:44:11 hosta kernel: drbd0: disk( Diskless -> Attaching )
Jan 22 18:44:11 hosta kernel: drbd0: No usable activity log found.
Jan 22 18:44:11 hosta kernel: drbd0: max_segment_size ( = BIO size ) = 32768
Jan 22 18:44:11 hosta kernel: drbd0: drbd_bm_resize called with capacity
== 838860800
Jan 22 18:44:11 hosta kernel: drbd0: resync bitmap: bits=104857600
words=1638400
Jan 22 18:44:11 hosta kernel: drbd0: size = 400 GB (419430400 KB)
Jan 22 18:44:11 hosta kernel: drbd0: writing of bitmap took 14 jiffies
Jan 22 18:44:11 hosta kernel: drbd0: 400 GB marked out-of-sync by on
disk bit-map.
Jan 22 18:44:11 hosta kernel: drbd0: 419430400 KB now marked out-of-sync
by on disk bit-map.
Jan 22 18:44:11 hosta kernel: drbd0: reading of bitmap took 15 jiffies
Jan 22 18:44:11 hosta kernel: drbd0: recounting of set bits took
additional 2 jiffies
Jan 22 18:44:11 hosta kernel: drbd0: 400 GB marked out-of-sync by on
disk bit-map.
Jan 22 18:44:11 hosta kernel: drbd0: disk( Attaching -> Inconsistent )
Jan 22 18:44:11 hosta kernel: drbd0: Writing meta data super block now.
Jan 22 18:44:11 hosta kernel: drbd1: disk( Diskless -> Attaching )
Jan 22 18:44:11 hosta kernel: drbd1: No usable activity log found.
Jan 22 18:44:11 hosta kernel: drbd1: max_segment_size ( = BIO size ) = 32768
Jan 22 18:44:11 hosta kernel: drbd1: drbd_bm_resize called with capacity
== 838860800
Jan 22 18:44:11 hosta kernel: drbd1: resync bitmap: bits=104857600
words=1638400
Jan 22 18:44:11 hosta kernel: drbd1: size = 400 GB (419430400 KB)
Jan 22 18:44:11 hosta kernel: drbd1: writing of bitmap took 6 jiffies
Jan 22 18:44:11 hosta kernel: drbd1: 400 GB marked out-of-sync by on
disk bit-map.
Jan 22 18:44:11 hosta kernel: drbd1: 419430400 KB now marked out-of-sync
by on disk bit-map.
Jan 22 18:44:12 hosta kernel: drbd1: reading of bitmap took 23 jiffies
Jan 22 18:44:12 hosta kernel: drbd1: recounting of set bits took
additional 2 jiffies
Jan 22 18:44:12 hosta kernel: drbd1: 400 GB marked out-of-sync by on
disk bit-map.
Jan 22 18:44:12 hosta kernel: drbd1: disk( Attaching -> Inconsistent )
Jan 22 18:44:12 hosta kernel: drbd1: Writing meta data super block now.
Jan 22 18:44:12 hosta kernel: drbd0: Writing meta data super block now.
Jan 22 18:44:12 hosta kernel: drbd1: Writing meta data super block now.
Jan 22 18:44:12 hosta kernel: drbd0: conn( StandAlone -> Unconnected )
Jan 22 18:44:12 hosta kernel: drbd0: receiver (re)started
Jan 22 18:44:12 hosta kernel: drbd0: conn( Unconnected -> WFConnection )
Jan 22 18:44:12 hosta kernel: drbd1: conn( StandAlone -> Unconnected )
Jan 22 18:44:12 hosta kernel: drbd1: receiver (re)started
Jan 22 18:44:12 hosta kernel: drbd1: conn( Unconnected -> WFConnection )
Jan 22 18:44:19 hosta kernel: drbd0: conn( WFConnection -> WFReportParams )
Jan 22 18:44:19 hosta kernel: drbd0: Handshake successful: DRBD Network
Protocol version 86
Jan 22 18:44:19 hosta kernel: drbd0: Peer authenticated using 20 bytes
of 'sha1' HMAC
Jan 22 18:44:19 hosta kernel: drbd0: No resync, but bits in bitmap!
Jan 22 18:44:19 hosta kernel: drbd0: peer( Unknown -> Secondary ) conn(
WFReportParams -> Connected ) pds
k( DUnknown -> Inconsistent )
Jan 22 18:44:19 hosta kernel: drbd0: Writing meta data super block now.
Jan 22 18:44:19 hosta kernel: drbd1: conn( WFConnection -> WFReportParams )
Jan 22 18:44:19 hosta kernel: drbd1: Handshake successful: DRBD Network
Protocol version 86
Jan 22 18:44:19 hosta kernel: drbd1: Peer authenticated using 20 bytes
of 'sha1' HMAC
Jan 22 18:44:19 hosta kernel: drbd1: No resync, but bits in bitmap!
Jan 22 18:44:19 hosta kernel: drbd1: peer( Unknown -> Secondary ) conn(
WFReportParams -> Connected ) pds
k( DUnknown -> Inconsistent )
Jan 22 18:44:19 hosta kernel: drbd1: Writing meta data super block now.
Jan 22 18:45:41 hosta kernel: drbd0: role( Secondary -> Primary ) disk(
Inconsistent -> UpToDate )
Jan 22 18:45:41 hosta kernel: drbd0: Forced to conisder local data as
UpToDate!
Jan 22 18:45:41 hosta kernel: drbd0: Creating new current UUID
Jan 22 18:45:41 hosta kernel: drbd0: Writing meta data super block now.
Jan 22 18:45:41 hosta kernel: drbd0: conn( Connected -> WFBitMapS )
Jan 22 18:45:55 hosta kernel: drbd1: peer( Secondary -> Primary ) pdsk(
Inconsistent -> UpToDate )
Jan 22 18:45:55 hosta kernel: drbd1: Writing meta data super block now.
Jan 22 18:45:55 hosta kernel: drbd1: conn( Connected -> WFBitMapT )
Jan 22 18:45:55 hosta kernel: drbd1: Writing meta data super block now.
Jan 22 18:49:50 hosta kernel: drbd0: role( Primary -> Secondary )


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Ralf Schenk
fon (02 41) 9 91 21-0
fax (02 41) 9 91 21-59
rs at databay.de

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