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EDIT BEFORE RUNNING

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kneutron 2025-01-14 14:26:29 -07:00 committed by GitHub
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ZFS/proxmox-lmde-create-zfs-disks.sh
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@ -1,21 +1,28 @@
#!/bin/bash
# 2025.Jan kneutron
# bash heredoc / here document
cat <<EOF
# Purpose: Populate a proxmox vm with the max number of disks (that I know of) for zfs raidz / raidz2 expansion testing
# OLDNOTE VM must be EFI boot to see all drives! (2025.Jan apparently works OK with Seabios now)
# NOTE DO NOT RUN THIS AGAINST A VM WITHOUT HAVING BACKED IT UP OR SNAPSHOTTED IT FIRST!!!
####################
# README
##############################################
# README - EDIT THIS SCRIPT BEFORE RUNNING IT!
#
# NOTE - run this script when the VM is POWERED OFF!
# current boot disk is set to scsi0 - make sure the VM is backed up in case scsi0 gets deleted!!
#
####################
# NOTE - this is important - DO NOT DO ZFS-ON-ZFS!
# -> Use XFS/ext4 or lvm-thin for backing storage when creating ZFS virtual disks or you will get write amplification!!
#
##############################################
# Purpose: Populate a proxmox vm with the max number of disks (that I know of) for zfs raidz expansion testing
# OLDNOTE VM must be EFI boot to see all drives! (2025.Jan apparently works OK with Seabios now)
# 2025.Jan kneutron
# NOTE you will probably need to use dev/disk/by-path in-vm
# NOTE you will probably need to use /dev/disk/by-path in-vm
# NOTE may need to reboot to have vm recognize all drives, or run rescan-scsi-bus
# NOTE - THIS IS A UTILITY SCRIPT, I TAKE NO RESPONSIBILITY FOR DATA LOSS! RUN THIS AT YOUR OWN RISK!
@ -23,23 +30,26 @@
# *** DO NOT RUN THIS SCRIPT IF YOU HAVE AN ACTIVE ZFS POOL IN THE VM, THE DISKS WILL BE FORCIBLY RECREATED!! ***
# NOTE this script assumes the boot drive (sda) is scsi0!!
Press Enter to proceed or ^C
EOF
read -n 1
# xxx TODO editme
vmid=100
#usestor=tosh10-xfs-multi # storage name from gui
#vmid=100
vmid=99999
#usestor=dir1-xfs # storage name from gui
#usestor=local-lvm # storage name from gui
usestor=tosh10-xfs-multi # storage name from gui
dsize=1 # GB
dsize=1 # create disk of this size in GB
skipscsi=1 # if limited storage
skipscsi=1 # if limited storage on host
#skipscsi=0
# NOTE also remove disk 1st if exist, for resizing
# ISSUE virtio only supports 0-15, sata only supports 0-5, scsi supports 0-30 - so we have to do this in sets
# NOTE proxmox sata drives are not hotplug and will not be de-rezzed if the vm is running
# NOTE this is important, skip sda
# NOTE this is important, skip sda as it may be the boot disk
i=1
echo "$(date) - Creating additional SATA disks for VM $vmid of size ${dsize}GB"
# these end up being sda .. sde in by-path
@ -105,8 +115,8 @@ echo "$(date) - Done - Total $total disks created for VM $vmid"
exit;
# HOWTO Distribute virtio disks between 2x XFS:
# for d in 1 3 5 7 9; do echo "$(date) - $d"; time qm move_disk 100 virtio$d dir1-xfs --delete; done; date
# HOWTO Distribute virtio disks between 2x XFS where 0,2..etc are on tosh10-xfs (for better I/O):
# for d in 1 3 5 7 9 11 13 15; do echo "$(date) - $d"; time qm move_disk 100 virtio$d dir1-xfs --delete; done; date
#grep -v unused 130.conf |grep -c qcow2