Error: Failed start validation for device - Name contains invalid character "/"

1

Hi! I’m on an Ubuntu 24.04 with kernel version 6.8.0-134 and just updated to Incus 7.2. Now, when I try to start a container with attached volumes, I see this error:

$ incus start jellyfin-container
Error: Failed start validation for device "custom/downloads": Name contains invalid character "/"

Here is some info from the device:

$ incus config device show jellyfin-container
custom/downloads:
  path: /mnt/downloads
  pool: lake-incus-zfs-dataset
  source: downloads
  type: disk
...

Was there any change in 7.2 that might be causing this?

2

The slash is bad for incus it would mean it would have to replace it with something else cause a slash means a directory.

Having it in the name of a volume means you would get something like this on the fs:

/var/lib/incus/storage-pools/default/custom/custom/downloads

The extra custom is from your volume.

That is bad for you and for incus, maybe that character has been replace in the past.

3

Slashes and other characters have been removed from device names in Add additional validation to device names by stgraber · Pull Request #3423 · lxc/incus · GitHub, which got into Incus 7.1.

4

I see I’m not giving any howto solve this.

First:

incus storage volume list lake-incus-zfs-dataset

From that output (maybe backup somehow first):

incus storage volume rename lake-incus-zfs-dataset <old-name> <new-name>

Now you can update the device to have <new-name>.

5

Thanks for the tip! But the thing is that in the table I get with incus storage volume list lake-incus-zfs-dataset I don’t see the “wrong” name:

$ incus storage volume list lake-incus-zfs-dataset
+--------+-----------------------+-------------+--------------+---------+
|  TYPE  |         NAME          | DESCRIPTION | CONTENT-TYPE | USED BY |
+--------+-----------------------+-------------+--------------+---------+
| custom | downloads             |             | filesystem   | 2       |
+--------+-----------------------+-------------+--------------+---------+

Am I missing something?

6

I have been to fast its named “downloads” cause you call it “source=downloads” all good, just rename the device to something else like custom-downloads and you are fine.

Sorry.

P.s.: I mixed up with incus-compose.

7

Ah, OK. I solved it by editing the container config with:

$ incus config edit jellyfin-container

And then renaming the device to custom-downloads.

Thanks!