unable to expand zvol

[flexyz]

Hi

When expanding disk on zvol on zfs, I get this error :

command 'zfs set 'volsize=57671680k' saspool/vms/vm-110-disk-1' failed: got timeout (500)

zfs get volsize saspool/vms/vm-110-disk-1
NAME PROPERTY VALUE SOURCE
saspool/vms/vm-110-disk-1 volsize 55G local

It shows that the disk has been expanded, but from the OS it is not
detected

I am running Virtual Environment 5.2-1

Thanks

 

[wolfgang]

Hi,

if you get a timeout this indicates that your pool is under hight load.
The problem is Proxmox VE must cancel a job after a certain time, but this could be too late for zfs and the operation is already performed.

In the VM you should see this with lsblk.
The FS will not resize automatically you must do this manually.

 

[flexyz]

Hi

The system is not under heavy load, I tried to create a zvol manaully and it worked fine(also with snapshots), it completed with no timeout or errors.

I know OS have to manually be resized - windows in this case.

I have multiple snapshots on the zvols could this be the issue?

 

[wolfgang]

How long do it take to create a zvol?

time zfs create -V 1G <path>

 

[flexyz]

time zfs create -V 5gb saspool/vol1

real    0m0.027s
user    0m0.007s
sys    0m0.003s

time zfs set volsize=6gb saspool/vol1

real    0m0.024s
user    0m0.005s
sys    0m0.005s

time zfs snapshot saspool/vol1@full

real    0m0.013s
user    0m0.000s
sys    0m0.007s

time zfs set volsize=7gb saspool/vol1

real    0m0.066s
user    0m0.000s
sys    0m0.011s

time zfs destroy -r saspool/vol1

real    0m0.064s
user    0m0.000s
sys    0m0.009s