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ext2: mark as deprecated - kernel/git/torvalds/linux.git - Linux kernel source tree
(git.kernel.org)
this post was submitted on 13 Apr 2024
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Not recommended for single-disk root partitions. This is a mistake I've made myself. Recovery tools are non-existant on ZFS so non-parity setups are inherently risky. If you have root setup on at least raidz1 with at least 2 disks you are fine.
Personally I wouldn't consider recovery as an option at all because it could easily be unavailable because the SSD failed. Instead, I tend to add a mirror drive and/or keep frequent backups where that's not possible. So from that perspective ZFS is equivalent to Ext4, which I currently use. I'd prefer ZFS over it for it's data verification, snapshotting and datasets features.
I've successfully recovered data from ext4 on a broken drive on one occasion. I agree it would have been better to have backups so lesson learned I suppose. Still if I'd been on ZFS root with no mirror I'd have been even more SOL