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https://forum.proxmox.com/threads/shrinking-zfs-filesystem-for-lxc-ct.40876/
Shrinking ZFS filesystem for LXC CT
Howdy, I have given Proxmox on ZFS a test run recently (having used Proxmox for many users without ZFS). I was hoping that Proxmox on ZFS would allow LXC containers to have their disk allocation both extended and shrunk. However, the Proxmox GUI does not s
forum.proxmox.com
서브볼륨이 rpool/data/subvol-120-disk-1 일 경우:
# optional: stop the container first
pct shutdown 120
# verify current usage/quota
zfs list rpool/data/subvol-120-disk-1
zfs get refquota,used,available rpool/data/subvol-120-disk-1
# shrink to 32G
zfs set refquota=32G rpool/data/subvol-120-disk-1
# refresh Proxmox's view
pct rescan
# check
zfs get refquota,used,available rpool/data/subvol-120-disk-1
df -h /rpool/data/subvol-120-disk-1
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