[SOLVED] How to remove/fix the state file after snapshot failed

[parker0909]

Hi All,

I am facing the strange problem, i find that the vm still have one state file even i already removed the snapshot. I don't know how to fix the problem and i am afraid it cause data lost when i try to remove state file in the zfs volume. May i know some suggestion to solve the problem?

I have checked the conf file but i cant find any snapshot setting

/etc/pve/qemu-server/201.conf

agent: 0
boot: order=scsi0;ide2;net0
cores: 2
ide2: none,media=cdrom
memory: 16384
name: WEBSPACE02
net0: virtio=42:9C9:16:8F:91,bridge=vmbr0,firewall=1,tag=118
numa: 1
onboot: 1
ostype: l26
scsi0: data:vm-201-disk-1,size=800G
scsihw: virtio-scsi-pci
smbios1: uuid=c3e6fdb7-5757-442a-9d9d-8d6a64b0c303
sockets: 4
vmgenid: 542abb35-3054-42fb-b1fe-a70e2595f0db

Thank you.

Parker

 

[fiona]

Hi,
if there is no reference of the snapshot in the config anymore, the state file is likely a left-over (maybe removal failed? please check the Remove Snapshot log in the VM's Task History. If you're unsure, just rename/move the state file and see if everything works before removing it for real.

 

[parker0909]

Thank you. I have tried to check Task History and i found below error during delete the snapshot.

Task viewer: VM 201 - Delete Snapshot

OutputStatus

Stop
TASK ERROR: zfs error: cannot destroy snapshot zfs_pool_01/vm-201-state-bk@__replicate_201-1_1643112007__: dataset is busy

 

[fiona]

Ok, so an active replication was interfering with the removal of the state volume then. It should be safe to remove.

 

[parker0909]

Thank you. I got the error message when i try to remove the state file. May i know some suggest to remove the state file?

Cannot remove image, a guest with VMID '201' exists!
You can delete the image from the guest's hardware pane

Thank you.
Parker

 

[fiona]

It's currently not possible to clean up such left-over volumes via UI. You need to remove it manually from the CLI, e.g. using pvesm free <storage>:<volume>.