I just migrated my #ZFS
mirror from small spinning disks to larger SSDs and I'm once more impressed with how easy this was. Basically I just added the new drives to the mirror, waited for the data to be copied over then removed the old ones. The ZFS pool then grew magically to the size of its new underlying partition.
Now, I can go back and concentrate on this migration of the Hubzilla database from MariaDB to Postgres. I'm still trying to tackle these NULL-dates which actually aren't NULL.