On Freitag, 8. April 2016 11:12:54 CEST Hugo Mills wrote: > On Fri, Apr 08, 2016 at 01:01:03PM +0200, Martin Steigerwald wrote: > > Hello! > > > > As far as I understood, for differential btrfs send/receive – I didn´t use > > it yet – I need to keep a snapshot on the source device to then tell > > btrfs send to send the differences between the snapshot and the current > > state. > > > > Now the BTRFS filesystems on my SSDs are often quite full, thus I do not > > keep any snapshots except for one during rsync or borgbackup script > > run-time. > > > > Is it possible to tell btrfs send to use generation number xyz to > > calculate > > the difference? This way, I wouldn´t have to keep a snapshot around, I > > believe. > > btrfs sub find-new > > BUT that will only tell you which files have been added or updated. > It won't tell you which files have been deleted. It's also unrelated > to send/receive, so you'd have to roll your own solution. I am aware of this one. > > I bet not, at the time cause -c wants a snapshot. Ah and it wants a > > snapshot of the same state on the destination as well. Well on the > > destination I let the script make a snapshot after the backup so… > > what I would need is to remember the generation number of the source > > snapshot that the script creates to backup from and then tell btrfs > > send that generation number + the destination snapshots. > > > > Well, or get larger SSDs or get rid of some data on them. > > Those are the other options, of course. Hm, I see. Thanks, -- Martin -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
