[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: [Linux-cluster] lv and its snapshot can be mounted at the same timein one node?



Have you tried this with GFS using one machine an lock_nolock?

I'm guessing that since the superblock is going to contain the same information in the lv and its snapshot, there might be a problem... I think that lock_nolock might get around this.

I guess you could have your lv mounted cluster-wide, then mount the snapshot on one machine with lock_nolock and do the backup...

have you tried this?

brassow

On Oct 22, 2004, at 12:52 AM, Rocty Wang wrote:


If I just used lvm2 and ext3, without cluster suite and GFS, I found that
I can mount the lv and its snapshot at the same time.


I just want the file system supports two features as below, but can't be
found now.


					   Extended on mounted
its snapshot can be mounted at the same time

Ext3						not support
support
XFS							support
not support
Cluster suite/GFS			support
???

Is that Cluster suite/GFS can support feature of the snapshot mounted at the
same time above?


Thanks.

Operations of ext3 fs just listed below:

#pvcreate /dev/sda /dev/sdb

#vgcreate vg1 /dev/sda /dev/sdb

#lvcreate -L 10G -n lv1 vg1

#mke2fs /dev/vg1/lv1

#mount /dev/vg1/lv1 /home/lv1

#lvcreate -s -L 2G -n snap1 /dev/vg1/lv1

#mount -o ro /dev/vg1/snap1 /home/snap1
	*** It is OK! ***


-- Linux-cluster mailing list Linux-cluster redhat com http://www.redhat.com/mailman/listinfo/linux-cluster



[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]