ZFS Failed Disk Replacement: Difference between revisions
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sgdisk /dev/sda -R /dev/sdb # sgdisk /dev/sda<From this disk> -R /dev/sdb<Replicate to this disk><br>sgdisk -G /dev/sdb # randomize the GUID on the new disk since it was copied from the other drive. | sgdisk /dev/sda -R /dev/sdb # sgdisk /dev/sda<From this disk> -R /dev/sdb<Replicate to this disk><br>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/ | ==Using Parted to verify the partition table of /dev/sdb== | ||
(parted) select /dev/ | (parted) select /dev/sdb<br>Using /dev/sdb | ||
<br>(parted) p<br> Model: ATA WDC WD2000FYYZ-0 (scsi)<br> Disk /dev/ | <br>(parted) p<br> Model: ATA WDC WD2000FYYZ-0 (scsi)<br> Disk /dev/sdb: 2000398934016B<br> Sector size (logical/physical): 512B/512B<br> Partition Table: gpt<br> Disk Flags:<br> Number Start End Size File system Name Flags | ||
1 1048576B 2097151B 1048576B Grub-Boot-Partition bios_grub | 1 1048576B 2097151B 1048576B Grub-Boot-Partition bios_grub | ||
2 2097152B 136314879B 134217728B fat32 EFI-System-Partition boot, esp | 2 2097152B 136314879B 134217728B fat32 EFI-System-Partition boot, esp | ||
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(Ok partitions copied) | (Ok partitions copied) | ||
==Copy data from /dev/sda1 to /dev/sdb1 | ==Copy data from /dev/sda1 to /dev/sdb1== | ||
dd if=/dev/sda1 of=/dev/sdb1 bs=512 #This is the bios boot partition | dd if=/dev/sda1 of=/dev/sdb1 bs=512 #This is the bios boot partition | ||
root@folkvang:~# dd if=/dev/ | root@folkvang:~# dd if=/dev/sda1 of=/dev/sdb1 bs=512 | ||
2014+0 records in | 2014+0 records in | ||
2014+0 records out | 2014+0 records out | ||
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Make sure to wait until resilver is done before rebooting. | Make sure to wait until resilver is done before rebooting. | ||
root@folkvang:~# zpool statuspool: rpool<br> state: DEGRADED<br> status: One or more devices is currently being resilvered. The pool will continue to function, possibly in a degraded state.<br> action: Wait for the resilver to complete.<br> scan: resilver in progress since Fri Sep 2 16:45:53 2016<br> 13.2M scanned out of 8.83G at 902K/s, 2h50m to go<br> 12.9M resilvered, 0.15% done<br> config:<br> NAME STATE READ WRITE CKSUM<br> rpool DEGRADED 0 0 0<br> mirror-0 DEGRADED 0 0 0<br> replacing-0 UNAVAIL 0 0 0<br> 993077023721924477 FAULTED 0 0 0 was /dev/sdk2<br> sdl2 ONLINE 0 0 0 (resilvering)<br> sdk2 ONLINE 0 0 0<br> errors: No known data errors | root@folkvang:~# zpool statuspool: rpool<br> state: DEGRADED<br> status: One or more devices is currently being resilvered. The pool will continue to function, possibly in a degraded state.<br> action: Wait for the resilver to complete.<br> scan: resilver in progress since Fri Sep 2 16:45:53 2016<br> 13.2M scanned out of 8.83G at 902K/s, 2h50m to go<br> 12.9M resilvered, 0.15% done<br> config:<br> NAME STATE READ WRITE CKSUM<br> rpool DEGRADED 0 0 0<br> mirror-0 DEGRADED 0 0 0<br> replacing-0 UNAVAIL 0 0 0<br> 993077023721924477 FAULTED 0 0 0 was /dev/sdk2<br> sdl2 ONLINE 0 0 0 (resilvering)<br> sdk2 ONLINE 0 0 0<br> errors: No known data errors | ||
== After fixing the drive, we need to ensure that the boot sectors are configured. == | |||
<b>grub-install /dev/sdk<br>grub-install /dev/sdl<br>update-grub</b> | <b>grub-install /dev/sdk<br>grub-install /dev/sdl<br>update-grub</b> | ||
Latest revision as of 14:27, 13 October 2024
Copy partitions from good disk sda to blank disk sdb
sgdisk /dev/sda -R /dev/sdb # sgdisk /dev/sda<From this disk> -R /dev/sdb<Replicate to 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/sdb
(parted) select /dev/sdb
Using /dev/sdb
(parted) p
Model: ATA WDC WD2000FYYZ-0 (scsi)
Disk /dev/sdb: 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
dd if=/dev/sda1 of=/dev/sdb1 bs=512 #This is the bios boot partition root@folkvang:~# dd if=/dev/sda1 of=/dev/sdb1 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 statuspool: 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
After fixing the drive, we need to ensure that the boot sectors are configured.
grub-install /dev/sdk
grub-install /dev/sdl
update-grub