quest free space and local-lvm free space not equal

[laci020]

Dear forum members!

I have a problem with my proxmox and win2012 server

The used space is not real in the quest manager.

I have dell poweredge r710 and 6x4 tb ssd with raid 10.

Please help me

 

[dcsapak]

if a vm writes a block on the virtual disk, that block is also allocated on the lv.
simply deleting a file from the vm does not free the block, you have to select 'discard' in the disk options of the vm
and let the guest os do a 'trim' or 'discard' operation

edit:

also if you have snapshots they will take up space

 

[laci020]

Dear dcsapak, the discard option is ticked, but no any change

 

[dcsapak]

yes you have to initial a trim from inside the guest...

 

[laci020]

insied quest the trim is enabled, but nothing happen

 

[dcsapak]

do you have snapshots on that vm?

 

[laci020]

i haven't snapshot

 

[dcsapak]

can you post the output of 'lvs' ?

 

[laci020]

lvs /dev/sdb: open failed: No medium found /dev/sdc: open failed: No medium found LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert data pve twi-aotz-- <6.84t 58.06 12.12 root pve -wi-ao---- 96.00g swap pve -wi-ao---- 8.00g vm-100-disk-0 pve Vwi-aotz-- 70.00g data 18.52 vm-101-disk-0 pve Vwi-aotz-- 5.37t data 73.66

 

[laci020]

can you post the output of 'lvs' ?

can you help me?

 

[dcsapak]

the lvs output shows that the disk in fact uses 3.9TiB. as i said this is probably due to the guest not marking it as free to the storage
how did you run the 'trim' in the guest?

 

[laci020]

I can't run a trim, because the quest not see this is ssd, think is hdd
in windows Optimize-Volume not working

I checked with trimcheck.exe and the trim isn't enabled.
Can i detach the virtio harddisk, and attach sata hard disk with ssd emulation?

 

[dcsapak]

Can i detach the virtio harddisk, and attach sata hard disk with ssd emulation?

i don't know if windows likes that, i guess if it is the bootdisk, it could make problems

you can make a backup and restore it though
sorry that would not help you...

 

[laci020]

Thank you the help, i try it