Eu uso o Ambiente Virtual Proxmox 5.1 no KVM.
Eu uso a partição LVM e tenho um disco VM com armazenamento Thin Provision, veja:
# lvdisplay
--- Logical volume ---
LV Path /dev/pve/vm-104-disk-1
LV Name vm-104-disk-1
VG Name pve
LV UUID WlGFQV-pvbu-6Pdz-9fhr-82z2-fhuu-ximBY6
LV Write Access read/write
LV Creation host, time ded, 2017-03-03 22:10:03 +0100
LV Pool name data
LV Status available
# open 0
LV Size 40.00 GiB
Mapped size 9.89%
Current LE 10240
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:9
# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
vm-104-disk-1 pve Vwi-a-tz-- 40.00g data 9.89
Como você pode ver, 9,89% usado de 40 GiB
Depois, crio o backup e restaura o disco com dd . com estes comandos:
Backup:
# dd if=/dev/pve/vm-104-disk-1 | gzip > vm-104-disk-1.gz
Restaurar:
# gzip -dck vm-104-disk-1.gz | dd of=/dev/pve/vm-104-disk-1
Agora veja novamente:
# lvs
--- Logical volume ---
LV Path /dev/pve/vm-104-disk-1
LV Name vm-104-disk-1
VG Name pve
LV UUID tjcIcO-jIv2-cOpg-jr7r-WCLp-ilu5-0ua5fq
LV Write Access read/write
LV Creation host, time pve, 2017-11-07 05:30:23 +0330
LV Pool name data
LV Status available
# open 0
LV Size 40.00 GiB
Mapped size 100.00%
Current LE 10240
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:10
# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
vm-104-disk-1 pve Vwi-a-tz-- 40.00g data 100.00
Você pode ver que eu usei 100% de 40 GiB, mas o correto foi 9,89%.
Por que e como posso resolver esse problema?