[DRBD-user] Detection of Logical Volume on nested LVM

Lars Ellenberg lars.ellenberg at linbit.com
Fri Mar 12 10:20:24 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.


On Fri, Mar 12, 2010 at 09:54:07AM +0100, Olivier LAMBERT wrote:
> So, always the same problem without understanding why it works when
> all iSCSI clients are connected to the same DRBD, and no way to
> synchronize lvcreate/lvremove between clients on different DRBD hosts,
> despite they are primary/primary..
> 
> I search a solution to the LVM side, but answers were "check your DRBD
> replication link". :(

CHECK YOUR CACHE CONSISTENCY.

As I told you before,

> >> If you have caches on "the way" to "the other client"
> >> that happen to happily cache stale content (are "incoherent"),
> >> there is nothing DRBD can do about it.

(and cLVM would not be able to do anything about it either).

So.
Please. Check. That.

-- 
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

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