errors when creating and deleting snapshots of CT

[stats]

Dear PROXMOX support,

An error occurs when creating and deleting snapshots while running a container created on PROXMOX (6.4-13).
Could you tell me what the problem is?
PROXMOX is a 3-node cluster and uses ceph for storage.


<Error when creating snapshot>
failed to open /home/.DECRYPT: Permission denied
failed to open /home/muroi/priv/salesdoc: Permission denied
failed to open /home/kaneko/priv/salesdoc: Permission denied
failed to open /home/tomita/priv/salesdoc: Permission denied
failed to open /home/tatsuoka/priv/salesdoc: Permission denied
TASK OK

<Result of df command>
encfs 104178552 38161668 60705208 39% /home/.DECRYPT
/home/.DECRYPT/salesdoc 104178552 38161668 60705208 39% /home/muroi/priv/salesdoc
/home/.DECRYPT/salesdoc 104178552 38161668 60705208 39% /home/kaneko/priv/salesdoc
/home/.DECRYPT/salesdoc 104178552 38161668 60705208 39% /home/tomita/priv/salesdoc
/home/.DECRYPT/salesdoc 104178552 38161668 60705208 39% /home/tatsuoka/priv/salesdoc

<Permission information>
drwx------ 14 root users 4096 Apr 11 14:45 .ENCRYPT


<Error when deleting snapshot>
2023-09-08 11:52:23.705 7ffaf0ff9700 -1 librbd:bject_map::InvalidateRequest: 0x7ffaec008d40 should_complete: r=0
Removing snap: 100% complete...done.
2023-09-08 11:52:24.409 7fe71effd700 -1 librbd:bject_map::InvalidateRequest: 0x7fe72c001e00 should_complete: r=0
Removing snap: 100% complete...done.
TASK OK

 

[LnxBil]

Could you tell me what the problem is?

You have configured encfs inside of your container and PVE has a problem with it.

 

[stats]

You have configured encfs inside of your container and PVE has a problem with it.

When I use encfs, what are the problems with creating a snapshot?
Could you please tell me the solution?

Also, librbd errors occur when deleting a snapshot, is this also related to encfs?
Is there a solution for this too?

 

[LnxBil]

When I use encfs, what are the problems with creating a snapshot?
Could you please tell me the solution?

Also, librbd errors occur when deleting a snapshot, is this also related to encfs?
Is there a solution for this too?

Yes, I think this is a bug an encfs filesystems should be ignored.

 

[stats]

Yes, I think this is a bug an encfs filesystems should be ignored.

I have some additional questions regarding this.

Question about "failed to open <dir>: Permission denied" when creating a snapshot
1) Will this be improved by upgrading Proxmox to 7.4 or 8.0?
2) Is there a other way to avoid the error when we use Proxmox 6.4?
3) What are the consequences of ignoring this error?

Questions regarding "librbd:bject_map::InvalidateRequest" when deleting snapshots
4) This error does not occur on other virtual machines with the same encfs configuration. Is encfs really related to the librbd error?