# Crea una zpool raidz $ zpool create zroot raidz1 gpt/zfs0 gpt/zfs1 gpt/zfs2 # Lista delle zpool $ zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT zroot 141G 106G 35.2G - 43% 75% 1.00x ONLINE - # Informazioni dettagliate su una zpool $ zpool list -v zroot NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT zroot 141G 106G 35.2G - 43% 75% 1.00x ONLINE - gptid/c92a5ccf-a5bb-11e4-a77d-001b2172c655 141G 106G 35.2G - 43% 75% # Informazioni sullo stato delle zpool $ zpool status pool: zroot state: ONLINE scan: scrub repaired 0 in 2h51m with 0 errors on Thu Oct 1 07:08:31 2015 config: NAME STATE READ WRITE CKSUM zroot ONLINE 0 0 0 gptid/c92a5ccf-a5bb-11e4-a77d-001b2172c655 ONLINE 0 0 0 errors: No known data errors # "Scrubbing" (correzione degli errori) $ zpool scrub zroot $ zpool status -v zroot pool: zroot state: ONLINE scan: scrub in progress since Thu Oct 15 16:59:14 2015 39.1M scanned out of 106G at 1.45M/s, 20h47m to go 0 repaired, 0.04% done config: NAME STATE READ WRITE CKSUM zroot ONLINE 0 0 0 gptid/c92a5ccf-a5bb-11e4-a77d-001b2172c655 ONLINE 0 0 0 errors: No known data errors # Proprietà di una zpool (gestite dal sistema o dall'utente) $ zpool get all zroot NAME PROPERTY VALUE SOURCE zroot size 141G - zroot capacity 75% - zroot altroot - default zroot health ONLINE - ... # Modifica di una proprietà $ zpool set comment="Dati" zroot $ zpool get comment NAME PROPERTY VALUE SOURCE tank comment - default zroot comment Dati local $ zpool destroy test # Crea un dataset $ zfs create zroot/root/data $ mount | grep data zroot/root/data on /data (zfs, local, nfsv4acls) # Crea un sottodataset $ zfs create zroot/root/data/stuff $ mount | grep data zroot/root/data on /data (zfs, local, nfsv4acls) zroot/root/data/stuff on /data/stuff (zfs, local, nfsv4acls) # Crea un volume $ zfs create -V zroot/win_vm $ zfs list zroot/win_vm NAME USED AVAIL REFER MOUNTPOINT zroot/win_vm 4.13G 17.9G 64K - # Lista dei dataset $ zfs list NAME USED AVAIL REFER MOUNTPOINT zroot 106G 30.8G 144K none zroot/ROOT 18.5G 30.8G 144K none zroot/ROOT/10.1 8K 30.8G 9.63G / zroot/ROOT/default 18.5G 30.8G 11.2G / zroot/backup 5.23G 30.8G 144K none zroot/home 288K 30.8G 144K none ... # Informazioni su un dataset $ zfs list zroot/home NAME USED AVAIL REFER MOUNTPOINT zroot/home 288K 30.8G 144K none # Lista degli snapshot $ zfs list -t snapshot zroot@daily-2015-10-15 0 - 144K - zroot/ROOT@daily-2015-10-15 0 - 144K - zroot/ROOT/default@daily-2015-10-15 0 - 24.2G - zroot/tmp@daily-2015-10-15 124K - 708M - zroot/usr@daily-2015-10-15 0 - 144K - zroot/home@daily-2015-10-15 0 - 11.9G - zroot/var@daily-2015-10-15 704K - 1.42G - zroot/var/log@daily-2015-10-15 192K - 828K - zroot/var/tmp@daily-2015-10-15 0 - 152K - $ zfs rename zroot/root/home zroot/root/old_home $ zfs rename zroot/root/new_home zroot/root/home # I dataset non possono essere eliminati se hanno degli snapshot $ zfs destroy zroot/root/home # Tutte le proprietà di un dataset $ zfs get all zroot/usr/home NAME PROPERTY VALUE SOURCE zroot/home type filesystem - zroot/home creation Mon Oct 20 14:44 2014 - zroot/home used 11.9G - zroot/home available 94.1G - zroot/home referenced 11.9G - zroot/home mounted yes - ... # Proprietà specifica $ zfs get compression zroot/usr/home NAME PROPERTY VALUE SOURCE zroot/home compression off default # Modifica di una proprietà $ zfs set compression=lz4 zroot/lamb # Specifiche proprietà per tutti i dataset $ zfs list -o name,quota,reservation NAME QUOTA RESERV zroot none none zroot/ROOT none none zroot/ROOT/default none none zroot/tmp none none zroot/usr none none zroot/home none none zroot/var none none ... # Crea uno snapshot di un singolo dataset zfs snapshot zroot/home/sarlalian@now # Crea uno snapshot di un dataset e dei suoi sottodataset $ zfs snapshot -r zroot/home@now $ zfs list -t snapshot NAME USED AVAIL REFER MOUNTPOINT zroot/home@now 0 - 26K - zroot/home/sarlalian@now 0 - 259M - zroot/home/alice@now 0 - 156M - zroot/home/bob@now 0 - 156M - ... # Elimina uno snapshot $ zfs destroy zroot/home/sarlalian@now # Elimina uno snapshot ricorsivamente $ zfs destroy -r zroot/home/sarlalian@now $ zfs rename zroot/home/sarlalian@now zroot/home/sarlalian@today $ zfs rename zroot/home/sarlalian@now today $ zfs rename -r zroot/home@now @yesterday # Utilizzare il comando cd come per una directory $ cd /home/.zfs/snapshot/ # Backup di uno snapshot su un file $ zfs send zroot/home/sarlalian@now | gzip > backup_file.gz # Invia uno snapshot ad un altro dataset $ zfs send zroot/home/sarlalian@now | zfs recv backups/home/sarlalian # Invia uno snapshot ad un host remoto $ zfs send zroot/home/sarlalian@now | ssh root@backup_server 'zfs recv zroot/home/sarlalian' # Invia l'intero dataset e i suoi snapshot ad un host remoto $ zfs send -v -R zroot/home@now | ssh root@backup_server 'zfs recv zroot/home' # Clona uno snapshot $ zfs clone zroot/home/sarlalian@now zroot/home/sarlalian_new # Rende il clone indipendente dallo snapshot originale $ zfs promote zroot/home/sarlalian_new