So you do this per node?
[ LVM <-> DRBD <-> LVM ]
On 5/26/2010 12:55 PM, Bart Coninckx wrote:
On Wednesday 26 May 2010 19:36:33 Oliver Hoffmann wrote:
Hi list!
I searched the web but I only found lvm on drbd and many problems
concerning kvm or xen. I need lvm and drbd to have a flexible
file server (without xen or the like).
If I put lvm on top of drbd I run into problems. Such as a complex
failover situation and I am limited to the physical space of a HD or
partitions.
Thus I think drbd on lvm would be better. In the end I want a
drbd- and pacemaker- based file server with nfs and cifs and iSCSI.
Plus I want to add one or more HD easily whenever needed or provide
more or less disk space for a client or a share.
What do you think?
Thanks for suggestions!
Cheers,
Oliver
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Oliver,
I put DRBD on top of LVM for one sole reason: being able to resize DRBD
resources if I would ever need to. Without LVM below it, it's much riskier
(see DRBD manual).
I also put LVM at the same time on top of DRBD (see "nested LVM" in the DRBD
manual) which works great, provided you change /etc/lvm/lvm.conf
About the complex failover situation: if you have cluster software taking care
of this, it should not be referred to any more as being "complex". Setting
that software up might be however.
Hope this helps,
Bart
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