[DRBD-user] drbdsetup hangs forever with drbd 0.7.x

Lars Ellenberg Lars.Ellenberg at linbit.com
Mon Jun 20 13:26:25 CEST 2005

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


/ 2005-06-20 12:01:42 +0200
\ Jens Viebig:
> Hello List,
> i'm trying to get drbd 0.7 working with SuSE 8.2 and the default 2.4 Kernel
> on an IBM eServer x346.
> The 'drbd' disk is an external sata raid device connected over scsi cable.
> When i run drbdsetup
> 
> drbdsetup /dev/drbd0 disk /dev/sdb2 /dev/sdb1 0
> or
> drbdsetup /dev/drbd0 disk /dev/sdb2 internal -1
> 
> It just hangs forever, i even can't abort it (with ctrl-c) or kill
>  (kill -9 ) the process.
> 
> The last message i get from drbd in the log says:
> 
> Jun 20 11:18:28 suse82 kernel: drbd0: drbdsetup
> [11288]:drbd_md_sync_page_io(,488033528,READ)
> 
> I tried a lot of versions form 0.7.0 to 0.7.11 but all show the same
> behaviour
> 
> I got drbd runing fine with 0.6.13 on that machine. I like to use 0.7
> because of its support for XFS filesystem and the process of synching seems
> to be more 'intelligent' than with 0.6 which does matter because our disks
> in production will be quite big (around 2 TB)
> 
> Any idea why drbdsetup with 0.7 hangs ??
> 

maybe it is just very slow during the initial creation of the bitmap...
that is not optimized at all, and creates the bitmap and other meta data
using synchronous sector-sized io...

experiment with a small (few GB) device first.
large (some TB) devices may be very slow during (initial) setup.

-- 
: 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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