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Wednesday
Sep262012

auto-replicate update

I just updated the auto-replicate script to add in the zfs holds function so that snapshots that have been used to replicate a file system have a hold positioned on them so they can’t be deleted.

It manages the holds so that once you’ve sent a new replication stream to a destination it will remove the old hold and add one to the latest snapshot.

This should obviate the need to deal with missing source snapshots.

Note: you can still break the system by taking snapshots on the destination volume or manually deleting snapshots on the destination. But you shouldn’t be doing that kind of thing anyway…