sparse VM sizing

[hescominsoon]

I have scale up on my testing server(see signature) and i setup a 150 gig zvol as the disk per the wizard. According to storage it is using 150 gigs of disk space which leads me to believe this was not a thin provisioned VM. Can kvm not work with thin provisioned drives or is this an artifact of the webui not being quite finished in this regard?

 

[ornias]

I think spares is an additional setting you need to check the checkbox for on the zvol....

 

[Patrick M. Hausen]

zfs inherit -S refreservation mypool/my/zvol ...
Might have slightly different syntax on SCALE than on CORE, but clearing the refreservation attribute turns your volume into a sparse one.

 

[hescominsoon]

in scale that sparse option is not in the web ui...heance the question....:) If it's supposed tob e there then i'll fle a bug report..:)

 

[craigywsm]

I have tried to get Sparse storage working in SCALE and it look like it is not working, Please can this be added as a feature request?

 

[Patrick M. Hausen]

What's the result of zfs get refreservation yourpool/path/to/volume?

 

[craigywsm]

What's the result of zfs get refreservation yourpool/path/to/volume?

Hi Patrick please see below:
truenas# zfs get refreservation MainPool/VM_DISKS/win10
NAME PROPERTY VALUE SOURCE
MainPool/VM_DISKS/win10 refreservation none default

 

[craigywsm]

Hi Patrick please see below:
truenas# zfs get refreservation MainPool/VM_DISKS/win10
NAME PROPERTY VALUE SOURCE
MainPool/VM_DISKS/win10 refreservation none default

Hi Patrick, my mistake it is now working :)

 

[Patrick M. Hausen]

Yes, this looks like a sparse volume.