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ZFS: Howto add compression on existing dataset and (re-add) re-/compress existing data
First you create a zfs filesystem.. then you starts using it.. then you find out “ouuu kvak! I need compression and deduplication on this data in the exact dataset!”. So you do: That’s all! Check what’s achieved via:
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HOWTO: ZFS Create new zpool and zfs mountpoints on FreeBSD 9
Assuming installed freebsd9 on zfs zpool (a.k.a. zroot) Asumming we have two gparted devs with labels disk1 and disk3: 1. Create and verify zpool (I name it zstore ) db2# zpool create zstore mirror /dev/gpt/disk1 /dev/gpt/disk3 db2# zpool list NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT zroot 19.9G 2.28G 17.6G 11% 1.00x ONLINE –…
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LINE BY LINE ON COMMAND LINE 