How to create and add a new virtual disk to a VM using command line.

[kakao73]

Hello,

I've tried below but failed:

$ pvesm alloc <lvm-thin-storage> 123 '' 5G
successfully created '<lvm-thin-storage>:vm-123-disk-1'

$ qm set 123 --scsihw virtio-scsi-pci --scsi1 <lvm-thin-storage>:vm-123-disk1,discard=on,ssd=1
update VM 123: -scsi1 <lvm-thin-storage>:vm-123-disk1,discard=on,ssd=1 -scsihw virtio-scsi-pci
can't get size of '/dev/<lvm-storage>/vm-123-disk1':   Failed to find logical volume "<lvm-storage>/vm-123-disk1"

How can I add a new virtual disk to a VM using command line?

 

[Dominic]

Have you tried using vgcreate directly? What is the output of lvdisplay (or only lvs)?

 

[kakao73]

@Dominic No. I expected that these commands work agnostically . Don't they work on Lvm-thin?

 

[Dominic]

Works for me:

mala# pvesm status            
Name                       Type     Status           Total            Used       Available        %
(...)
localThin               lvmthin     active       419430400       214328934       205101465   51.10%
mala# pvesm alloc localThin 116 '' 11G    
  Logical volume "vm-116-disk-1" created.
successfully created 'localThin:vm-116-disk-1'
mala# qm set 116 --scsi11 localThin:vm-116-disk-1,discard=on
update VM 116: -scsi11 localThin:vm-116-disk-1,discard=on
mala# qm config 116 | grep scsi11
scsi11: localThin:vm-116-disk-1,discard=on,size=11G

What version are you using pveversion -v?

 

[kakao73]

Ouch. What a shame. I'm sorry for my mis-spelled "vm-123-disk1". I've missed dash between disk and 1.
@Dominic Thank you for your kind answer!