[DRBD-user] "To resolve this both sides have to support at least protocol" after upgrade

Tim Sharpe tim at sharpe.id.au
Thu Dec 9 20:45:15 CET 2010

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

Hi Lars,

Thanks for getting back to me.

A couple of questions though.  Why would it need protocol 91 if they
both supported protocol 90 and why would this issue only show up on
one of the resources on this box while the other 15 resources ran


On 10 December 2010 03:02, Lars Ellenberg <lars.ellenberg at linbit.com> wrote:
> On Wed, Dec 08, 2010 at 12:37:07PM +1100, Tim Sharpe wrote:
>> Hi all,
>> I was upgrading one of our older DRBD pairs from 8.3.2 to 8.3.7 today
>> and ran into a bit of a problem.  I took the resources on the
>> secondary down, upgraded the kernel & DRBD, rebooted and brought the
>> resources back up again.  One of the resources on the secondary
>> refused to reconnect to the primary server however the other 15
>> connected and resynced fine.
>> Here's the log for the resource
>> block drbd12: drbd_sync_handshake:
>> block drbd12: self 113BE4C4974DBB16:0000000000000000:FDD46B6FD6F2C788:80EFD64D4EC7ECC7 bits:0 flags:0
>> block drbd12: peer 113BE4C4974DBB17:FDD46B6FD6F2C789:80EFD64D4EC7ECC7:F88BD898114DD15D bits:4842 flags:0
>> block drbd12: uuid_compare()=-1001 by rule 30
>> block drbd12: To resolve this both sides have to support at least protocol
> That should read "at least protocol 91",
> which according to changelog is DRBD version >= 8.3.3.
>> It looks like it's handshaking and agreeing on a common protocol fine,
>> but then disconnects with a message to the contrary.  Has anyone run
>> into a similar situation?
> So as soon as you have upgraded on both sides,
> drbd should be able to resolve that.
> --
> : 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.
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