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164 lines
4.6 KiB
Bash
164 lines
4.6 KiB
Bash
#!/bin/bash
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# Add 2nd or 3rd mirror drive to proxmox zfs boot/root and fix boot
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# This is for when you want to make a full backup of your proxmox zfs boot/root
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# so you can test boot it on other hardware or use it as a DR drive
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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://hosting-tutorials.co.uk/tutorials/linux/replacing-a-zfs-rpool-disk-with-proxmox-7-x
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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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# Depends:
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# sgdisk wipefs
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set -u # abort on undefined var
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set -e # abort on error
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[ $(which sgdisk |wc -l) -eq 0 ] && apt-get install -y gdisk
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[ $(which wipefs |wc -l) -eq 0 ] && apt-get install -y util-linux
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[ $(which parted |wc -l) -eq 0 ] && apt-get install -y parted # included in case partition end needs to be manually moved + makes new gptlabel
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# REF: https://sirlagz.net/2023/07/03/updated-live-resize-lvm-on-linux/
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# failexit.mrg
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function failexit () {
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echo '! Something failed! Code: '"$1 $2" # code # (and optional description)
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exit $1
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}
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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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echo "WARNING: About to destructively apply a new GPT label to disk $newdisk1 - ^C to backout or Enter to proceed"
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read
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#zpool set autoexpand=on rpool
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for disk in $newdisk1; do
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echo $disk
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# need to do this if run >1
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parted -s /dev/$disk mklabel gpt
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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 "$(date) - Prep new mirror disk, blank any filesystem / zfs data"
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set +e # OK if we fail here, not fatal
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zpool labelclear /dev/${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/${newdisk2}3
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set -e
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zpool status rpool -v |awk 'NF>1'
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#sizeb4=$(zpool list rpool)
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echo "About to attach new mirror disk $newdisk1 to zfs boot disk(s) - ^C to backout / Enter = proceed"
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read
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function waitresilver () {
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# wait for resilver
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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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}
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sdate=$(date)
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set -x
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#zpool add -f rpool mirror /dev/${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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time zpool attach rpool ${oldisk1}3 ${newdisk1}3 \
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|| failexit 100 "Zpool replace $oldisk1 $newdisk1 failed"
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set +x
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waitresilver;
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#set -x
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#time zpool replace rpool ${oldisk2}3 ${newdisk2}3 \
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# || failexit 100 "Zpool replace $oldisk2 $newdisk2 failed"
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#set +x
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#waitresilver;
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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 new mirror drive"
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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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set +e # grub error is ok here
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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 any disk now! After shutdown + remove extra mirror disk, run:"
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echo " proxmox-boot-tool clean"
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echo "and:"
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echo " zpool detach rpool ${newdisk1}3"
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echo "or whatever the missing device GUID is in zpool status -v"
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echo "Then:"
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echo " zpool clear rpool"
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echo "If you are running this in VM, assign 3rd mirror disk to another VM before powering this instance back on"
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echo " you will need to give the other instance a new IP address, or just do not run the same boot image simultaneously"
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#echo "Size before:"
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#echo "$sizeb4"
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#echo "Size after:"
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#zpool list 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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