ZFS Failed Disk Replacement

Copy partitions from good disk sda to blank disk sdb

sgdisk -R /dev/sdb /dev/sda # sgdisk -R /dev/sdb<Replicate to this disk> /dev/sda<From this disk>
sgdisk -G /dev/sdb # randomize the GUID on the new disk since it was copied from the other drive.

Using Parted to verify the partition table of /dev/sdl

(parted) select /dev/sdl
Using /dev/sdl
(parted) p

Model: ATA WDC WD2000FYYZ-0 (scsi)

Disk /dev/sdl: 2000398934016B

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

Number Start End Size File system Name Flags

1 1048576B 2097151B 1048576B Grub-Boot-Partition bios_grub

2 2097152B 136314879B 134217728B fat32 EFI-System-Partition boot, esp

3 136314880B 2000397885439B 2000261570560B zfs PVE-ZFS-Partition

(Ok partitions copied)

Copy data from /dev/sda1 to /dev/sdb1 and /dev/sda2 to /dev/sdb2

dd if=/dev/sda1 of=/dev/sdb1 bs=512 #This is the bios boot partition
root@folkvang:~# dd if=/dev/sdk1 of=/dev/sdl1 bs=512
2014+0 records in
2014+0 records out
1031168 bytes (1.0 MB) copied, 0.10164 s, 10.1 MB/s

Replace the failed partition in the zpool

Find the ID of the failed block device

root@folkvang:~# zpool status

pool: rpool

state: DEGRADED

status: One or more devices could not be used because the label is missing or invalid. Sufficient replicas exist for the pool to continue functioning in a degraded state.

action: Replace the device using 'zpool replace'.

see: http://zfsonlinux.org/msg/ZFS-8000-4J

scan: scrub repaired 0 in 0h25m with 0 errors on Sun May 8 11:20:27 2016

config:

NAME STATE READ WRITE CKSUM

rpool DEGRADED 0 0 0

mirror-0 DEGRADED 0 0 0

993077023721924477 FAULTED 0 0 0 was /dev/sdk2

sdk2 ONLINE 0 0 0

errors: No known data errors

Call zpool to replace the failed device

root@folkvang:~# zpool replace -f rpool 993077023721924477 /dev/sdl2

Make sure to wait until resilver is done before rebooting.

root@folkvang:~# zpool status

pool: rpool

state: DEGRADED

status: One or more devices is currently being resilvered. The pool will continue to function, possibly in a degraded state.

action: Wait for the resilver to complete.

scan: resilver in progress since Fri Sep 2 16:45:53 2016

13.2M scanned out of 8.83G at 902K/s, 2h50m to go

12.9M resilvered, 0.15% done

config:

NAME STATE READ WRITE CKSUM

rpool DEGRADED 0 0 0

mirror-0 DEGRADED 0 0 0

replacing-0 UNAVAIL 0 0 0

993077023721924477 FAULTED 0 0 0 was /dev/sdk2

sdl2 ONLINE 0 0 0 (resilvering)

sdk2 ONLINE 0 0 0

errors: No known data errors

(Just in case I did)
grub-install /dev/sdk
grub-install /dev/sdl
update-grub