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Where can I read more about good ZFS settings for a filesystem on a new RAID6 array? I don't want to manage disks or volumes with ZFS, I'll be doing that with mdadm, just want ZFS as filesystem instead of ext4. I assume a ZFS filesystem can grow if the space available expands later?
Right, I'd like to be able to add another disk and then grow the filesystem and be done with it.
Really, I'll have to look into that then because health checks are my main reason for using ZFS over ext4.
mdadm RAID should be a transparent layer for ZFS, it manages the array and exposes a raw storage device. Not sure why ZFS would not like that but I don't want to experiment if it's not a reliable combination. I was under the impression that ZFS as a filesystem can be used without caring about the underlying disk support, but if it's too opinionated and requires its own disk management then too bad...
Today, growing a pool is possible by adding a vdev, right?
So, instead of RAIDZ2, one could setup their pool with mirrored vdevs.
However, I'm not sure about the self-healing part. Would it still work with mirrored vdevs, especially when my vdevs consist of two physical drives only?