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....why? He has a functioning array already. It mounts and is readable.
The unraid array it's not an array, but a bunch of xfs partitions where a third party program is doing softraid. If opened on any other Linux distro, they will mount but parity drives are ignored
They literally said it was a btrfs array.
a btrfs "array" in unraid is composed by individual btrfs partitions mounted as /mnt/disk1 /disk2 /disk3 and so on, then there's a daemon that makes a "unified" view at /mnt/user/, and it uses a different algorithm for parity.
There's a way to make real btrfs raid arrays, but it has been introduced very recently (1-2 years ago), and it's not the default that you create when you use the Web UI.
Sure...so I'm confused why you're bringing XFS to the conversation.
for some reason i read xfs instead of btrfs....
their array implementation is stupid and smart at the same time. I love that you can mix and match disks at random, even with different filesystems (you can have one drive in murderfs, one in xfs, one in btrfs and the last one in zfs and all protected with the same parity drive), but i completely hate how my server is locked by a 25% iowait due to how much cpu intensive is their softraid. Maybe when they came out with this system 20 years ago it was groundbreaking, but now it is stupid. Now with unraid 7 released one week ago they're starting to deprecate it (disabled by default in new install) in favor of native btrfs or zfs arrays