[DRBD-user] kernel: drbd0: bio would need to, but cannot, be split:

Lars Ellenberg lars.ellenberg at linbit.com
Thu May 28 13:29:18 CEST 2009

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


On Thu, May 28, 2009 at 01:01:04PM +0200, hans morbus2000 wrote:
> hello,
> 
> we have configure "Nested lvm2 on top of drbd" on SLES10 SP2 (with all Updates)
> Raid5 ->lvm2->drbd->lvm2 with 3 LVs with reiserfs and ocfs2
> drbd 8.2.6 in primary/primary mode
> 
> when we mapping LV to Virtual Disk over GUI or command line
> # xm block-attach <domain id from xm list> /dev/vgmirror/raid dev/xvdb w
> 
> Everything was going just fine until I tried to test the filesystems in the domU
> 
> error on DomU
> kernel: Buffer I/O error on device xvdb1, logical block 838849799
> kernel: end_request: I/O error, dev xvdb, sector 838849855
> kernel: Buffer I/O error on device xvdb1, logical block 838849792
> kernel: Buffer I/O error on device xvdb1, logical block 838849793
> kernel: end_request: I/O error, dev xvdb, sector 63
> kernel: end_request: I/O error, dev xvdb, sector 63
> kernel: end_request: I/O error, dev xvdb, sector 125
> ...
> 
> error on Dom0
> kernel: drbd0: bio would need to, but cannot, be split: (vcnt=8,idx=0,size=4096,sector=1048565439)
> kernel: drbd0: bio would need to, but cannot, be split: (vcnt=8,idx=0,size=4096,sector=1048565439)
> kernel: drbd0: bio would need to, but cannot, be split: (vcnt=8,idx=0,size=4096,sector=209715647)
> kernel: drbd0: bio would need to, but cannot, be split: (vcnt=8,idx=0,size=4096,sector=209715647)
> ...
> 
> how can we resolve this problem?
> is this solved in the release 8.3?
> can DRBD handle more than one Logical Volume per DRBD device?

http://article.gmane.org/gmane.comp.linux.drbd/15034/
http://article.gmane.org/gmane.comp.linux.drbd/15589/

hth

-- 
: 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



More information about the drbd-user mailing list