[Linux-cluster] Netapp snapdrive connect doesn't like clustered volumes

[yu song]

ok..firstly confirm whether you are using HA-LVM, not GFS/GFS2 .. correct?

if ha-lvm, your vg should only be imported/mounted on one node, instead of
multiple nodes.

if you run this command on node1, assuming vg1, you still can use "vgchange
-cy vg1" on node2 to import the vg and use it on node2.

as long as you don't mount volumes of same vg ( still assuming you are not
using gfs/gfs2) on multiple nodes at the same time.. you won't corrupt
data.

snapshot or backup is always an essential part when you do migration.


Yu

On Mon, Dec 10, 2012 at 11:13 PM, Gianluca Cecchi <gianluca.cecchi at gmail.com
> wrote:

> On Mon, 10 Dec 2012 21:02:19 +1100 Yu wrote:
> > vgchange -cn vgname
> > Can disable cluster flag
> > Regards
> > Yu
>
> Ok, thanks, I thought about this option too and it seems it works.
> More testing in place.
> In this cluster I have many services and each one is bundled with its
> own VGs, so that each node is active for that particular service.
> To use CLVMD is comfortable when I need to add LUNs or resize pre-existing
> ones.
> I had a doubt if running "vgchange -cn" when both nodes are online
> could cause any problem so I was not sure...
> What does it happen with node 2 when I run this command on node 1?
> "SImply" that node cannot online the VG any more or worse it can
> online it without safety and cause data corruption?
> What the best behaviour to avoid data corruption for the few seconds I
> need to make a snapshot of a not-clustered VG?
>
> Gianluca
>
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