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118 lines
3.0 KiB
Bash
118 lines
3.0 KiB
Bash
#!/bin/bash
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# Replace zfs boot/root mirror disks with smaller ones and fix boot for both
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# 2024.May kneutron
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# NOTE I TAKE NO RESPONSIBILITY FOR DATA LOSS, EDIT THIS SCRIPT BEFORE RUNNING
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# AND MAKE SURE YOU DESIGNATE THE RIGHT DISKS!
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# NOTE it is HIGHLY RECOMMENDED to try this in a vm first!!!!
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# REF: https://www.reddit.com/r/Proxmox/comments/1cr6wn7/tutorial_howto_migrate_a_pve_zfs_bootroot_mirror/
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set -u # abort on undefined var
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set -e # abort on error
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echo "WARNING: About to destructively apply a new GPT label to disks - ^C to backout or Enter to proceed"
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read
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# TODO EDITME and make sure to put the correct shortnames in!
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oldisk1=vda
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oldisk2=vdb
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newdisk1=vdc
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newdisk2=vdd
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for disk in $newdisk1 $newdisk2; do
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echo $disk
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sgdisk -g \
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-n 1:0:+1M \
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-n 2:0:+1G \
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-n 3:0:0 \
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-t 1:8300 \
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-t 2:EF00 \
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-t 3:BF01 \
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-p /dev/$disk
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gdisk -l /dev/$disk
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done
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echo "$(date) - Prep new disks, blank any filesystem / zfs data"
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set +e # OK if we fail here, not fatal
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zpool labelclear /dev/${newdisk1}3
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zpool labelclear /dev/${newdisk2}3
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wipefs -a /dev/${newdisk1}3
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wipefs -a /dev/${newdisk2}3
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set -e
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zpool status rpool -v
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echo "About to replace old boot disks with new disks - ^C to backout / Enter = proceed"
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read
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set -x
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zpool add -f rpool mirror /dev/${newdisk1}3 /dev/${newdisk2}3
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zpool detach rpool /dev/${oldisk1}3
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time zpool remove rpool /dev/${oldisk2}3
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set +x
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# wait for resilver
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sdate=$(date)
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# do forever
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while :; do
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clear
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echo "Pool: rpool - NOW: $(date) -- Watchresilver started: $sdate"
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zpool status rpool |grep -A 2 'in progress' || break 2
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zpool iostat -v rpool #2 3 &
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sleep 5
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date
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done
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ndate=$(date)
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zpool status -v rpool |awk 'NF>0' # skip blank lines
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echo "o Resilver watch rpool start: $sdate // Completed: $ndate"
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proxmox-boot-tool status # Note if grub is being used or not here
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addgrub=""
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[ $(proxmox-boot-tool status |grep -c grub) -gt 0 ] && addgrub="grub"
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echo "$(date) - Fixing boot on both new drives"
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set -x
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proxmox-boot-tool format /dev/${newdisk1}2 --force # <new disk's ESP partn>
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proxmox-boot-tool format /dev/${newdisk2}2 --force # <new disk's ESP partn>
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time sync; sleep 2
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proxmox-boot-tool init /dev/${newdisk1}2 $addgrub # <new disk's ESP partn>
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proxmox-boot-tool init /dev/${newdisk2}2 $addgrub # <new disk's ESP partn>
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proxmox-boot-tool refresh
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set +x
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zpool status rpool -v
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echo '====='
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echo "You should be able to boot with either disk now! After shutdown + remove old disks, run:"
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echo " proxmox-boot-tool clean"
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echo "and:"
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echo " zpool clear rpool"
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exit;
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Device Start End Sectors Size Type
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/dev/nvme0n1p1 34 2047 2014 1007K BIOS boot
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/dev/nvme0n1p2 2048 2099199 2097152 1G EFI System
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/dev/nvme0n1p3 2099200 167772160 165672961 119G ZFS
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# REFs:
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https://forum.proxmox.com/threads/replace-512gb-ssds-with-500gb-ssds.143077/
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https://pve.proxmox.com/wiki/ZFS_on_Linux#sysadmin_zfs_change_failed_dev
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https://pve.proxmox.com/wiki/Host_Bootloader#sysboot_proxmox_boot_tool
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https://forum.proxmox.com/threads/fixing-uefi-boot.87719/
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