I'm trying to convert my btrfs drives to zfs by
* moving everything away from the btrfs drive
* reformat to zfs
* and then move back to the newly formatted zfs
However, zfs is extremely slow. Write speed around 30MB/s, sometimes even lower.
Tried the unbalance plugin but also used rsync, also tried it with different values for --bwlimit, as found in in the forum for Prereleases. Not much change, see the attached plugin screenshot where the target disk4 is formatted with zfs.
Not sure if I'm doing something wrong but with this speed, zfs is close to be unusable.
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