2016-05-21

proxmox: shrink lxc container

Proxmox 4.2
Container: 101
Storage: iSCSI with group "iscsi-lvm-group"
Current size: 20G
Needed size: 10G
  1. BACKUP FIRST!
  2. Stop VM
    lcx-stop -n 101
  3. Check disk
    e2fsck -f  /dev/iscsi-lvm-group/vm-101-disk-1
    (
    use tune2fs if "MMP check failed" error, and e2fsck again)
  4. Do your disk little smaller that you want
    resize2fs /dev/iscsi-lvm-group/vm-101-disk-1 9G
  5. Reduce LVM size to what you want
    lvreduce -L 10G /dev/iscsi-lvm-group/vm-101-disk-1
  6. Resize your disk without size parameter
    resize2fs /dev/iscsi-lvm-group/vm-101-disk-1
  7. Check disk
    e2fsck -f  /dev/iscsi-lvm-group/vm-101-disk-1
    (
    use tune2fs if "MMP check failed" error, and e2fsck again)
  8. Edit disk size in container config
    vi /etc/pve/lxc/101.conf
  9. Run the container

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