Hi all,
I am new to the list, so please bear with me.
This is from this list some 15 months ago:
On Tue, Oct 14, 2008 at 10:12 AM, Federico Simoncelli
<federico.simoncelli@???> wrote:
> Looking at the LVM2 code (LVM2.2.02.40, tools/lvcreate.c:640):
>
> /* FIXME Allow exclusive activation. */
> if (vg_is_clustered(vg)) {
> log_error("Clustered snapshots are not yet supported.");
> return 0;
> }
>
> looks like there is no way to activate a snapshot in a clustered
> volume group. Is the documentation wrong?
> Is there anyone actively working on the "exclusive activation" FIXME
> that is mentioned in the comment?
Hi all,
I worked a little on this issue and I came up with a working patch
for LVM2.2.02.32.
...
To be able to set the lv as exclusive you have to deactivate it on the
other nodes with the command:
# lvchange -aln /dev/vg00/lvol1
and then you can create the snapshot:
# lvcreate --size 100M --snapshot --name snap /dev/vg00/lvol1
Logical volume "snap" created
It automatically takes care to set the lv device as exclusive
(vgchange -aey).
Can anyone review the patch?
I would be very interested in the outcome of this patch. Has it been
reviewed, how was the result, are there binaries/source code I could deploy?
Any hint or help would be greatly appreciated.
Dirk
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