----------------eredeti üzenet----------------- Feladó: "Christian Blaich" [email protected] Címzett: [email protected] Dátum: Thu, 09 May 2013 18:20:01 +0200 ------------------------------------------------- > hey, > > how can zfs help with delta snapshots ? > Never used zfs before. > > chris > >
Hi, ZFS using copy-on-write, never overwrite existing data -> no data corruption on the disk -> no fsck. So, snapshot is fun: - you have a pool, let's call it tank. - you setup several volumes to hold images, private, iso, dump etc., like: tank/ tank/vz/ tank/vz/images/ (compression disabled) tank/vz/images/100 (compression enabled: lz4) tank/vz/images/101 (compression enabled: gzip 3) tank/vz/private/102 (compression enabled: lz4) tank/vz/cache/template (compression disabled) tank/vz/cache/iso (compression disabled) - you want to create a snapshot VM100 today: zfs snap tank/vz/images/100@snapshot-before-upgrade-20130509 just some seconds - you want to clone (like linked clone in the new pve): zfs clone tank/vz/images/100@snapshot-before-upgrade-20130509 tank/vz/images/1001 just some seconds Bye, István _______________________________________________ pve-user mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
