For whatever reason I find that seeing gaps in IDs between VMs annoying. I don't like seeing gaps such as:
VM100 - 100
VM101 - 101
VM103 - 103
VM104 - 104Thankfully there's a bit of a way to adjust the IDs for VMs. I would recommend taking a backup of the VM and it's configuration file(s) beforehand. Once you're ready you can run the following command to display information about your logical volumes.
lvs -aThis should display something similar to:
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
vm-100-disk-0 data -wi-ao---- 120.00g
vm-101-disk-0 data -wi-ao---- 80.00g
vm-101-disk-1 data -wi-ao---- 120.00g
vm-102-disk-0 data -wi-a----- 120.00g
vm-103-disk-0 data -wi-ao---- 80.00g
vm-104-disk-0 data -wi-ao---- 80.00g
vm-105-disk-0 data -wi-ao---- 320.00g
vm-105-disk-1 data -wi-ao---- 120.00g
vm-105-disk-2 data -wi-ao---- 120.00g
vm-106-disk-0 data -wi-ao---- 80.00g
vm-107-disk-0 data -wi-ao---- 120.00g
data pve twi-a-tz-- 59.66g 0.00 1.59
[data_tdata] pve Twi-ao---- 59.66g
[data_tmeta] pve ewi-ao---- 1.00g
[lvol0_pmspare] pve ewi------- 1.00g
root pve -wi-ao---- 27.75g
swap pve -wi-ao---- 8.00g Next, determine which VM you're wanting to change the ID of. In the following commands I will be changing the VM ID of 101 to 100.
This command will update the name of the logical volume:
lvrename data/vm-101-disk-0 vm-100-disk-0Next we want to update the ID in the VMs configuration file:
sed -i "s/101/100/g" /etc/pve/qemu-server/101.confAfter that we want to rename the VMs configuration file:
mv /etc/pve/qemu-server/101.conf /etc/pve/qemu-server/100.confOnce those commands have been run you can start the VM up again.