Re: Need inputs: Performance issues with LVM snapshots
Gionatan Danti <[email protected]>
| Newsgroups | gmane.linux.lvm.general |
|---|---|
| Message-ID | <[email protected]> |
Il 2022-03-07 12:09 Gaikwad, Hemant ha scritto: > Hi, > > We have been looking at LVM as an option for long term backup using > the LVM snapshots. After looking at the various forums and also > looking at a few LVM defects, realized that LVM could be a very good > option for short term backup, but might result in performance issues > if the snapshots are retained for a long time. Also read we should > restrict the number of snapshots. We are thinking of keeping it to 3, > but do you think that could also be a performance bottleneck. A few > forum posts also suggest memory issues with using LVM snapshots. Can > you please help with some data on that too. Thanks in advance for > making our decision easier. Thanks > > Regards, Classical, non-thin LVM snapshots are only meant to be short-lived (just enough to take a backup), and the performance penalty you talk about does apply. Thin LVM snapshots, on the other side, command a much lower performance penalty and can be long-lived (ie: think about a rolling snapshot system). So if you need multiple, long-lived snapshots, I strongly suggest you to check lvmthin. Regards. -- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: [email protected] - [email protected] GPG public key ID: FF5F32A8 _______________________________________________ linux-lvm mailing list [email protected] https://listman.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/