cooperate with autosnap generated snapshots?

[mayli]

The "smart" send is likely to send a zfs-auto-snap_frequent one. Later once the zfs-auto-snap_frequent get deleted from local host, zfsbackup will get confused and refuse to backup any further.

[someone1]

It's somewhat out of scope for this project to handle all cases of how you manage your snapshots, you can script execution of this project manually according to how you manage snapshots.

How would you like to handle these cases? What's the expected behavior?

[mschout]

Couple of things here.

One: zfsbackup-go has a --snapshotPrefix param so you can tell it to e.g. only consider the daily or hourly snapshots. I submitted this feature precisely to deal with this scenario.

Two: It is probably better to have a separate set of snapshots that are only rotated when the backup runs. My strategy is to use zfsbackup-go as the snapshot label, and my wrapper script that runs the backup does this:

# create a new set of snapshots
zfs-auto-snapshot --label=zfsbackup-go //

zfs list -H -o name,com.sun:auto-snapshot | while read line; do
  # run zfsbackup-go, unless com.sun:auto-snapshot is "false" ...
  ...
done

# delete old snapshots.
zfs-auto-snapshot --destroy-only --keep=1 --label=zfsbackup-go //

Side note: there is a bug in zfs-auto-snapshot where you need to set --keep=2 unless you have patched around it. See zfsonlinux/zfs-auto-snapshot#121