3 ms·
You can ZFS send back and forth between pools or to a new dataset to defrag/fix that, so it's not "permanent" as in can't ever be fixed. It also depends on work
by seized 3y ago
You can ZFS send back and forth between pools or to a new dataset to defrag/fix that, so it's not "permanent" as in can't ever be fixed. It also depends on workload, write once/read many is different from VM disk files.
- chasil 3y agoBtrfs can "rebalance" in place. This has had bugs in the past, but seems safe now. On the side of ZFS, you can take one volume of a mirrorset, move it to another system and mount it in degraded mode, and copy a bunch of new files to it. When you return the updated drive to the full set and mount it, it will resilver the older drive with the newer content automatically. That's a killer feature. With btrfs, you have to rebalance to mirror the new files, which takes a long time as every block must be rewritten between the mirrors. ZFS knows how to move just the new files in a resilver.