--container-mounts can't mount directory with spaces

[mathrock74]

Mounting a directory with spaces to the container doesn't work:

~$ srun --no-container-mount-home --container-mounts '/muw/home/my_user/foo bar':/root --container-image=debian date
pyxis: importing docker image: debian
pyxis: imported docker image: debian
slurmstepd: error: pyxis: container start failed with error code: 1
slurmstepd: error: pyxis: printing enroot log file:
slurmstepd: error: pyxis: enroot-mount: failed to mount: /muw/home/my_user/foo at /tmp/enroot-data/user-36209/pyxis_479.0/bar: No such file or directory
slurmstepd: error: pyxis: couldn't start container
slurmstepd: error: spank: required plugin spank_pyxis.so: task_init() failed with rc=-1
slurmstepd: error: Failed to invoke spank plugin stack
srun: error: deepops-node1: task 0: Exited with exit code 1

I don't know if this is pyxis or enroot issue.

pyxis: 0.16.1
enroot: 3.4.1
pyxis options: container_scope=global

Thanks for help.

[flx42]

This might require a few tweaks in pyxis for this use case, for sure.

On the enroot side, I'm not sure if it will require any change or not. I tried quoting the path with a space but without success:

$ file '/home/fabecassis/foo bar'
/home/fabecassis/foo bar: directory

$ cat conf
mounts() {
        echo '"/home/fabecassis/foo bar" "/mnt" x-create=auto,rbind'
}

$ enroot start --conf ./conf ubuntu
enroot-mount: failed to mount: "/home/fabecassis/foo at /tmp/enroot-data/user-1000/ubuntu/bar": No such file or directory

@3XX0 can you please check if this use case is supported in enroot today?

[3XX0]

This is doable with enroot built against glibc but not musl unfortunately (which is shipped by default).

mounts() {
        echo 'foo\040bar /mnt x-create=auto,rbind'
}

[flx42]

Ah yes that's unfortunate.

But it seems that when enroot is compiled with glibc, pyxis will simply work with the \040 syntax as it's just being passed through to enroot:

$ srun --container-image=ubuntu:22.04 --container-mounts '/home/fabecassis/foo\040bar:/mnt' findmnt /mnt
TARGET SOURCE                                   FSTYPE OPTIONS
/mnt   /dev/nvme0n1p2[/home/fabecassis/foo bar] ext4   rw,relatime,errors=remount-ro