add "cleanup_only" configuration to skip snapshotting #49
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I have
zfs-auto-snapshotrunning on a remote machine and regularly pull all remote snapshots usingsyncoid.As a result, this accumulates a lot of snapshots locally - I had 50000 frequent snapshots that had accumulated over the years.
With this change, I can do a
zfs set com.sun:auto-snapshot=cleanup_only tank/syncoidandzfs-auto-snapshotcan run locally and clean up snapshots, but not create new ones (since these will be synced from an external source).