Am 10.11.2022 um 06:38 schrieb David Christensen: > What is your technique for defragmenting ZFS? well, that was meant more or less a joke: there is none apart from offloading all the data, destroying and rebuilding the pool, and filling it again from the backup. But i do it from time to time if fragmentation got high, the speed improvements are obvious. OTOH the process takes days on my SOHO servers