LVM partition as a guest disk.

[Cristiano R. D. Poli]

Hey Guys, I would like to know if its possible to set up a guest using directly a lvm partition. No files images like raw, qcow2 or so forth.
I need as much as possible I/O performance.

Best.

 

[acidrop]

yes, you can.
Just create the apropriate pv,vg but not lv from cli.
Then go to webgui datastore -> storage -> add -> lvm

 

[Cristiano R. D. Poli]

yes, you can.
Just create the apropriate pv,vg but not lv from cli.
Then go to webgui datastore -> storage -> add -> lvm

Hmmm, I suppose to set a direct access to a LVM Partition as a Guest disk. I don't want a storage for files, I must have a ide disk accessing directly the lvm partition, got it?

 

[acidrop]

Hmmm, I suppose to set a direct access to a LVM Partition as a Guest disk. I don't want a storage for files, I must have a ide disk accessing directly the lvm partition, got it?

something like this?: ide0: vg0:vm-111-disk-2,cache=writethrough,size=120G


lvm:volume_group lvm:logical_volume (not .raw file)

 

[Cristiano R. D. Poli]

something like this?: ide0: vg0:vm-111-disk-2,cache=writethrough,size=120G


lvm:volume_group lvm:logical_volume (not .raw file)

It might be! How Do I change these settings?

 

[Cristiano R. D. Poli]

I guess it has worked!
Now i am going to test i/o speed and other improvements in my environment.
Thanks acidrop.

 

[curlingcanteen]

As you were, I'm not clear on how you implemented acidrop's solution. Would you please explain how you got from post #5 to #6?

 

[acidrop]

As you were, I'm not clear on how you implemented acidrop's solution. Would you please explain how you got from post #5 to #6?

Simply follow lvm guidelines to create a volume group:
1. Create a PV first from and underlying block storage for example /dev/sdb1
2. Create a Volume Group (VG) on this PV for example VG0
3. Now, go to proxmox webgui on Datacenter -> Storage -> Add -> LVM and selected the previously create VG0
4. Create new VM and on storage section select this VG0, give it a size and finally proxmox will automatically create a LV for this VM.