ZFS

Abstract Dedicated to ZFS administration. Zpool Administration Basic Commands zpool list zpool list <name> zpool list -v zroot zpool status -x Creating Pools and VDEVs Make sure ashift is 4k, vfs.zfs.min_auto_ashift=12 Select disks (da1, da2, da3) ls -al /dev/ | grep da crw-r----- 1 root operator 0x5a Nov 14 02:51 da0 crw-r----- 1 root operator 0x5b Nov 14 02:51 da0p1 crw-r----- 1 root operator 0x5c Nov 14 02:51 da0p2 crw-r----- 1 root operator 0x5d Nov 14 02:51 da0p3 crw-r----- 1 root operator 0x6a Nov 15 18:46 da1 crw-r----- 1 root operator 0x6d Nov 15 18:46 da2 crw-r----- 1 root operator 0x70 Nov 15 18:46 da3 We can create a disk, provide it 1gb of swap, and label it. The labels should correspond to device serial numbers and location in production so it’s easy to swap out. GB swap partition and a large ZFS partition, created with gpart(8). gpart create -s gpt da1 gpart add -a 1m -s1g -l sw1 -t freebsd-swap da1 gpart add -a 1m -l zfs1 -t freebsd-zfs da1 gpart create -s gpt da2 gpart add -a 1m -s1g -l sw2 -t freebsd-swap da2 gpart add -a 1m -l zfs2 -t freebsd-zfs da2 gpart create -s gpt da3 gpart add -a 1m -s1g -l sw3 -t freebsd-swap da3 gpart add -a 1m -l zfs3 -t freebsd-zfs da3 gpart create -s gpt da4 gpart add -a 1m -s1g -l sw4 -t freebsd-swap da4 gpart add -a 1m -l zfs4 -t freebsd-zfs da4 gpart create -s gpt da5 gpart add -a 1m -s1g -l sw5 -t freebsd-swap da5 gpart add -a 1m -l zfs5 -t freebsd-zfs da5 gpart show -l <device> glabel status zpool create <pool-name> /dev/label/zfs1 /dev/label/zfs2 /dev/label/zfs3 Fix Degraded Pool Here we see the state is DEGRADED ...