It is curious the performance differences found between ZFS and Btrfs, as I've always had the reverse experience, with ZFS being slower by maybe 15%. The scrubbing on md raid does take a while, every block must be checked as it has no idea what blocks are in use or not; although a write-intent bitmap would avoid a complete resync after an unclean shutdown.
It is curious the performance differences found between ZFS and Btrfs, as I've always had the reverse experience, with ZFS being slower by maybe 15%. The scrubbing on md raid does take a while, every block must be checked as it has no idea what blocks are in use or not; although a write-intent bitmap would avoid a complete resync after an unclean shutdown.