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: g.danti@xxxxxxxxxx - info@xxxxxxxxxx GPG public key ID: FF5F32A8 _______________________________________________ linux-lvm mailing list linux-lvm@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
