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  1. TrueNAS
  2. NAS-105718

Add Pre/Post scripts to Periodic Snapshot Tasks

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      I think this has been discussed a variety of times in the forums and the answer has usually been to handle this outside the FreeNAS system. I can agree on some seemingly abusive use-cases to this feature but think there are valid use-cases that should be supported.

      The need for something like this, in my case at least, stems from a very similar situation as why VMWare-Snapshots exist - I need to quiesce some services prior to the snapshot. Instead of asking for a feature request for every situation I need this for, I figured it'd be easy enough to generalize with a pre/post script feature request and more/less expose the existing process the VMWare-Snapshot tasks use.

      The intention is not to rsync massive amounts of data prior to a snapshot or anything like that but to run a quick (feel free to put an enforced time limit of 1 minute on the task) script prior to taking the snapshot.

      My specific use-case is to initialize VSS on target Windows hosts utilizing FreeNAS as a iSCSI target such that the volumes are flushed and consistent prior to a snapshot. I'm sure others may have different use-cases that wouldn't abuse the feature.

      Hopefully this would leverage existing code already found in VMWare-Tasks and wouldn't be hard to add support for.  If maintainers are open to allowing this feature, I'd be happy to help try and create a PR to add it (not gauranteeing success though).

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                Assignee:
                releng Release Council
                Reporter:
                s0me0ne1 Prateek Malhotra
                Watchers:
                Prateek Malhotra
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