[DRBD-user] "Simple" LVM without clvmd?

Pete Ashdown pashdown at xmission.com
Fri Jun 3 16:42:46 CEST 2011

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


Thank you for your help.  I would like both hosts to be able to manipulate
the LVM and run in dual primary mode.  There isn't a whole lot of
manipulation going on, and certainly not simultaneous.

On 06/03/2011 12:50 AM, Oleg Gelbukh wrote:
> Hi
>
> Naturally, you can use drbd without clvm if you use standard
> primary/seconadry scheme and run lvm on primary only. Probably you can
> also lock LVM metadata operations using locking_type = 4 on host you are
> not going to run lvm commands on. The main problem of this approach is
> that you won't have your VGs and LVs activated on the 'passive' host
> until you do vgchange -a y on it, and on startup either. This can be
> fixed, of course, by means of cron and rc scripts.
>
> On Fri, Jun 3, 2011 at 12:41 AM, Pete Ashdown <pashdown at xmission.com
> <mailto:pashdown at xmission.com>> wrote:
>
>     I'm wondering if there is a simple way of using lvm on drbd without
>     the headache of clvmd.  Getting clvmd and corosync to run on Ubuntu
>     is very much a square-peg/round-hole situation.  I hate the way clvmd
>     can lock me out of vg's for no good reason.  Heartbeat, corosync, and
>     clvmd seems to be overkill for what I'm doing - two KVM boxes with
>     drbd backing store.  Would be more appropriate to crontab vgscan?
>
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