ZFS

• migration
• installation
• pool
• replace

migration

These commands will migrate one zfs pool to another server using netcat

zfs snapshot -r data@migrate_20200215
zfs list -t snapshot
zfs send -R data@migrate_20200215 | nc -l 3333

On the remote server you can execute

nc 10.7.10.71 3333 | zfs recv -Fd data

The version with netcat performed with much higher transfere speed than if you would use ssh.

installation

apt install lsscsi hddtemp lm-sensors vim htop screen mpt-status smartmontools parted lsof hdparm zfsutils-linux -y

Clean disks

wipefs -a /dev/sdb

RAIDZ1

zpool create data raidz1 sdb sdi sdq raidz1 sdc sdj sdr raidz1 sdd sdk sds raidz1 sde sdl sdt raidz1 sdf sdm sdu raidz1 sdg sdn sdv raidz1 sdh sdo sdw

RAIDZ2

zpool create data raidz2 sdb sdc sdy sdz sdq sdr raidz2 sdd sde sdw sdx sdo sdp raidz2 sdf sdg sdu sdv sdm sdn raidz2 sdh sdi sdk sdl sds sdt

zfs set compression=zstd data

zpool export data
zpool import -d /dev/disk/by-id data

zfs set mountpoint=/var/lib/docker data

zfs set mountpoint=none data

zfs get mountpoint data

pool

replace

blkid

lsblk -r|awk 'NR==1{print $0" DEVICE-ID(S)"}NR>1{dev=$1;printf $0" ";system("find /dev/disk/by-id -lname \"*"dev"\" -printf \" %p\"");print "";}'

sdb 8:16 0 2.7T 0 disk   /dev/disk/by-id/wwn-0x5000cca0585fdc44 /dev/disk/by-id/scsi-35000cca0585fdc44

zpool offline data 8254740297691293767

zpool replace data 8254740297691293767 /dev/disk/by-id/wwn-0x5000cca0585fdc44