Thanks for toby's explainations! == Eventually I create a new snapshot of my LV partition. But I have another problem with the snapshot of LV. That is how much snapshot I could create for my LV partition ? As I know some commercial software could create 254 snapshots for one LV such as IBM. So I try to create another snapshot for LV by issuing the following command: This is my first snapshot for /dev/Vol1/LV1 [root@met root]# lvcreate --size 100M -s -nsnapshot /dev/Vol1/LV1 lvcreate -- WARNING: the snapshot will be automatically disabled once it gets full lvcreate -- INFO: using default snapshot chunk size of 64 KB for "/dev/Vol1/snapshot" lvcreate -- doing automatic backup of "Vol1" lvcreate -- logical volume "/dev/Vol1/snapshot" successfully created I tried to create another snapshot for /dev/Vol1/LV1 [root@met root]# lvcreate --size 100M -s -nsnapshot1 /dev/Vol1/LV1 lvcreate -- WARNING: the snapshot will be automatically disabled once it gets full lvcreate -- INFO: using default snapshot chunk size of 64 KB for "/dev/Vol1/snapshot1" lvcreate -- doing automatic backup of "Vol1" lvcreate -- logical volume "/dev/Vol1/snapshot1" successfully created And how can I estimate the sizes and counts for them ? Is there any rules or principles to formalize the procedures ? > A snapshot will only capture what you have in the fs at the moment you -- snip -- > -toby -- Armani Liao _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
