quest free space and local-lvm free space not equal

laci020

New Member
Feb 10, 2021
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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
 

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

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yes you have to initial a trim from inside the guest...
 
do you have snapshots on that vm?
 
can you post the output of 'lvs' ?
 
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
 
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?
 
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?
 
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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...
 
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