Re: How to check if thin volume or snapshot was ever activated
Gionatan Danti <[email protected]>
| Newsgroups | gmane.linux.lvm.general |
|---|---|
| Message-ID | <[email protected]> |
Il 2021-08-09 05:53 Ming-Hung Tsai ha scritto: > It sounds like you intend to keep snapshots that have been updated > (written) since its creation, right? True. > The precise way might be checking the data mappings via thin_dump. An > updated device has data mappings with timestamps greater than the > device's creation time. Interesting approach, thanks. > Checking device activation might not meet what you need. An activated > device might or might not receive any write, so you don't know whether > a device has been updated by looking into its activation history. Sure, but it can be a reasonable approximation before further inspection. Also, I wonder if dumping data mappings can be slow for big volumes. Thanks. -- 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/