[DRBD-user] DRBD Crashing/Stalling on Sync

Tom Pawlowski tpawlowski.itx at gmail.com
Mon Sep 28 20:38:39 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.


Hi all,

I've come across an issue on a clustered set up that I haven't been
able to find a resolution for. If anyone could shed some light on it,
I'd very much appreciate it.


*SETUP*

Two hardware nodes, running a DRBD/LVM/Xen stack (in that order). One
node is using a RAID-1 3ware controller with two Western Digital Blue
1.0TB drives, the other RAID-5 3ware controller with three WD Black RE
500GB drives. Everything else is identical.

(I'm attempting to sync the data to the RAID-5 node so I can failover
to that and replace RAID-1 on the other node--given that the
performance with DRBD on the latter is awful.)

Controller information:

node1
3w-9xxx: scsi0: Found a 3ware 9000 Storage Controller at 0xda100000, IRQ: 16.
3w-9xxx: scsi0: Firmware FE9X 4.06.00.004, BIOS BE9X 4.05.00.015, Ports: 4.

node2
3w-9xxx: scsi0: Found a 3ware 9000 Storage Controller at 0xda100000, IRQ: 16.
3w-9xxx: scsi0: Firmware FE9X 4.06.00.004, BIOS BE9X 4.05.00.015, Ports: 2.

Software Version information for both nodes are identical:

Distro: Debian 5.0.3
Kernel: Linux 2.6.26-2-xen-amd64 #1 SMP Thu Aug 20 00:36:34 UTC 2009
x86_64 GNU/Linux
drbdadm Version: Version: 8.0.14 (api:86)
Xen Version: 3.0.3


*PROBLEM*

The sync will run along without any issues for a few hours, after
which /proc/drbd reports that it has stalled. The Xen instance running
on top stops responding entirely. There are a number of stack traces
in the system log which I have attached to the email.

Has anyone come across something like this before? Updating DRBD is a
bit iffy, as our client is very downtime-adverse given that he's
paying for a high-availability solution. Don't know if that can be
done without reinitializing both resources.

Thanks in advance for any help!

Regards,
Tom Pawlowski
-------------- next part --------------
A non-text attachment was scrubbed...
Name: node2.drbd.crash.20090928.log
Type: text/x-log
Size: 25836 bytes
Desc: not available
URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20090928/cdf4fd66/attachment.bin>


More information about the drbd-user mailing list