Use lvm-thin as datastorage

[larsen]

I have a second PVE server that also has PBS (1.0.8) installed. This second server shall backup the VMs/CTs from the first one.
Most of the disk space is in LVM-thin as this will be used for VMs.

Is it possible to use lvm-thin as a datastorage?

I don't know what kind of information would be useful to answer that question (if any), so here is the output of lvs.

atl-vm04:~# lvs
  LV     VG  Attr       LSize  Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  backup pve Vwi-aotz--  1.00t data        4.61
  data   pve twi-aotz-- <7.13t             0.65   0.43
  root   pve -wi-ao---- 96.00g
  swap   pve -wi-ao----  8.00g

 

[aaron]

You would need to create a new LV in the thin pool, format it with a file system and mount that.

 

[larsen]

Regarding the output of lvs above:
Do I have to resize "data" to make space for another LV or can I create a LV inside "data" (as it seems to be the case for "backup")?

 

[aaron]

No, the "data" is the thin pool in the VG pve. Checkout the lvmthin manpage (man thinlvm) and the example 4.
The thinpool is "data" and the VG is "pve".

 

[larsen]

Thanks a lot!

Command to be used (example) would be:

lvcreate -n thin1 -V 1M --thinpool data pve