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

[linux-lvm] Restoring method Snapshot to Orginal Volume





Hello,

I am using LVM2 whith XEN

All of my DomU disks are one or more logical volume

For exemple /dev/vg0/lv1


For the moment when i want do a domU backup, i take a snapshot, do an image (dd gzip) of the snapshot, delete the snapshot and restor the dd image on the original logical volume.

so


Backuping

lvcreate -s -L500M -nlv1.snap /dev/vg0/lv1

dd if=/dev/vg0/lv1.snap bs=16M | gzip | dd of=/lv1.gz bs=16M

lvremove /dev/vg0/lv1.snap


Restoring

gzip -dc /lv1.gz | dd of=/dev/vg0/lv1


This method is very weight and not useful


ideally
dd if=/dev/vg0/lv1.snap of=/dev/vg0/lv1 should be perfect but it is impossible because when restoring snapshot on the original volume, the snapshot continue to increase until to become fully and inactive


Is there a solution to deactive the cow (copy and write)for during the restoration about snapshot to original volume ?


MARTINEAU
Antony

Service informatique

Assistant informatique
LIPPI Management
La Fouillouse
16440 Mouthiers sur Boheme
Tel.: 05.45.67.34.35
Courriel:
antony martineau lippi fr
http://www.lippi.fr









Ce message et toutes les pieces jointes sont etablis a l'attention exclusive de ses destinataires et sont strictement confidentiels.
Pour en savoir plus cliquer ici

This message and any attachments are confidential to the ordinary user of the e-mail address to which it was addressed and may also be privileged.
More information


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