November 15, 20232 yr Hi all! I searched high and low as there's been a flurry of ZFS enthusiasts given it's availability now with Unraid. I have the following questions for those more experienced with it's implementation and usage with Unraid: I have a fairly 'vanilla' setup with several disks in an XFS array and 2x SSD's as a cache pool (set as BTRFS mirror) where items are moved the array nightly. I've converted the cache pool to a zfs mirrored pool thanks to Spaceinvader One's helpful video. It works! Questions though: Does Unraid automatically make use of snapshots, creating them? I've seen a few threads that allude to the fact that if you're using Docker folders (and not docker.img's) it appears to automatically create snapshots of your folders, I'm a little confused there despite looking deeper as I've never had to worry about that before. There was a reddit thread where a user discovered a whole bunch of snapshots being created that they discovered after installing the ZFS Master Plugin and it seems like it was by design? I did find it odd it was their 'system' share and not the 'appdata' share that had a whole bunch of dataset snapshots despite not having triggered that themselves. More importantly, what happens to a dataset on the ZFS cache pool after it's contents have been moved to the XFS array by the mover? Does the snapshot still reside on the ZFS cache pool taking up space? And if not, if a user chose to restore the dataset, do the files get 'pulled' back from the XFS array since they no longer reside on the ZFS cache pool? I can't wrap my head around this part. reddit.com/r/unRAID/comments/14pr1g5/zfs_system_snapshots/ Edited November 15, 20232 yr by Photek
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