I don't use OMV but I do use MergerFS + SnapRAID. Works great so far.
What ZFS are you using?
"As of November 2023, this feature was merged in main and is scheduled for release in OpenZFS 2.3:"
'The OpenZFS project (ZFS on Linux, ZFS on FreeBSD) is working on a feature to allow the addition of new physical devices to existing RAID-Z vdevs. This will allow, for instance, the expansion of a 6-drive RAID-Z2 vdev into a 7-drive RAID-Z2 vdev. This will happen while the filesystem is online, and will be repeatable once the expansion is complete (e.g., 7-drive vdev → 8-drive vdev)."
None yet. But comparisons ive seen (such as snapraid's website) suggested it was a limitation, but they could be quite old, still.
That's great to know, though. So no weird plugin management just using ZFS? Or would I need MergerFS in that scenario?
Not sure on MergerFS...I haven't gotten deep into ZFS pools.
The old adage is never use v x.0 of anything, which I'd expect to go double for data integrity. Is there any particular reason ZFS gets a pass here (speaking as someone who really wants this feature). TrueNAS isn't merging it for a couple of months yet, I believe.
ah yeah it's basically the first release supporting it. ah well, maybe i migrate later (i technically wont need it for a year or two with my projected data usage).
december 2023 feels ages ago but i suppose that doesnt account for filesystems needing more rigorous testing.
I played a bit with SnapRAID but realized there is too many ways to lose data with it; especially if you do periodic parity sync. Otherwise, it works fine.
MergerFS works properly as far I tested it.
You may encounter some confusing errors with MergerFS; depending on your config, any software using SQLite may crash with a scary-sounding "disk I/O error". The quickstart has more info, https://trapexit.github.io/mergerfs/quickstart/
Yes, don't put any database on it
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