Incus webui import image error

1

Anyone know why I’m getting the following error when importing a custom iso with the webui? The file gets all the way up there then i get this:

Failed creating custom volume from ISO: Failed creating volume: Failed to run: zfs create -s -V 5500297216 -o volmode=none -o incus:content_type=iso pool1/incus/custom/default_Parrot-security-6.0_amd64.iso.iso: signal: aborted (core dumped) (internal error: cannot create 'pool1/incus/custom/default_Parrot-security-6.0_amd64.iso.iso': Invalid argument)

zfs version
zfs-2.1.5-1ubuntu6~22.04.2
zfs-kmod-2.2.0-0ubuntu1~23.10
incus version 
Client version: 0.6
Server version: 0.6

pool1/incus                                                                                1.12M  5.42T       96K  legacy
pool1/incus/buckets                                                                          96K  5.42T       96K  legacy
pool1/incus/containers                                                                       96K  5.42T       96K  legacy
pool1/incus/custom                                                                           96K  5.42T       96K  legacy
pool1/incus/deleted                                                                         576K  5.42T       96K  legacy
pool1/incus/deleted/buckets                                                                  96K  5.42T       96K  legacy
pool1/incus/deleted/containers                                                               96K  5.42T       96K  legacy
pool1/incus/deleted/custom                                                                   96K  5.42T       96K  legacy
pool1/incus/deleted/images                                                                   96K  5.42T       96K  legacy
pool1/incus/deleted/virtual-machines                                                         96K  5.42T       96K  legacy
pool1/incus/images                                                                           96K  5.42T       96K  legacy
pool1/incus/virtual-machines                                                                 96K  5.42T       96K  legacy
2

So that’s saying that zfs create crashed somehow.

Anything interesting in dmesg?

Also, do you perhaps not have enough free space in your pool? Wondering what else could explain that failure.

3

I have about 4tb free so definitely not space. Can’t grab dmesg right now but will check when I’m back.

4

poked some more and there’s nothing in dmesg or journalctl that seems relevant. That said, if i remove the -s -V 5500297216 then it creates the dataset, so i’m wondering if something is calculating the size incorrectly.

If instead, i provide a human number for the size, it works fine:

sudo zfs create -s -V 5G -o volmode=none -o incus:content_type=iso pool1/incus/custom/default_Parrot-security-6.0_amd64.iso

Perhaps this is an edge case of a large iso?

5

Well, what’s odd is that it’s failing during the dataset creation rather than during its consumption.
Do you have a link to the exact ISO somewhere so I can try to import it on ZFS here?

6

Guessing it’s not file specific, but it’s this one: https://deb.parrot.sh/parrot/iso/6.0/Parrot-security-6.0_amd64.iso

7 
stgraber@dakara:~/Downloads$ incus storage volume import default Parrot-security-6.0_amd64.iso parrot --type=iso
stgraber@dakara:~/Downloads$ sudo zfs list -t all | grep parrot
dakara/incus/custom/default_parrot.iso                                                                       5.15G   653G  5.15G  -
stgraber@dakara:~/Downloads$
8

I can try it command line later. Not sure what to say, it’s constantly reproducible on my box :thinking:

9

Same error:

incus storage volume import incus-zfs .\Downloads\Parrot-security-6.0_amd64.iso parrot --type=iso

Error: Failed creating custom volume from ISO: Failed creating volume: Failed to run: zfs create -s -V 5500297216 -o volmode=none -o incus:content_type=iso pool1/incus/custom/default_parrot.iso: signal: aborted (core dumped) (internal error: cannot create 'pool1/incus/custom/default_parrot.iso': Invalid argument)
10

Ok, so it has to do with the rounding of the size not happening for reason. If i do the following manually, it works:

zfs create -s -V 5500297216 -o volblocksize=128K -o volmode=none -o incus:content_type=iso pool1/incus/custom/default_parrot.iso

So basically explicitly telling zfs to use volblocksize=128K makes this work. 128K is the default (according to documentation) so explicitly adding that shouldn’t affect anything, though i guess it’s possible for others to explicitly have some different volblocksize set.

11

Ah, so you can probably fix that for you by setting volblocksize=128K on pool1/incus/custom so all custom volumes use the standard size.

12

Just installed a new version of ubuntu on my laptop and immediately ran into the exact same issue off a fresh install. The following command failed:

sudo zfs set volblocksize=128K rpool/incus/custom
cannot set property for 'rpool/incus/custom': 'volblocksize' does not apply to datasets of this type

Of note, incus creates the datasets of mount type legacy which might be why it’s saying this.

For now, the solution I have been using is to run the truncate command on any iso prior to importing. Not optimal, but it allows me to import:

truncate -s "%128K" Ubuntu.iso
13

Can you try incus storage set POOL volume.zfs.blocksize=128KiB?

14

I was receiving the same kind of error with zfs create when trying to import an iso.

zfs version
zfs-2.1.5-1ubuntu6~22.04.4
zfs-kmod-2.2.0-0ubuntu1~23.10.2
incus version
Client version: 6.0.0
Server version: 6.0.0

…after running the suggested incus storage set POOL volume.zfs.blocksize=128KiB command I was able to import the iso without any errors.

1 Like