Clarification about "path must be defined inside a valid overlay" (Fix incoming) #237
Description
I'm trying to work around #236 by creating subdirectories in my guest's /mnt and mounting stuff there via virtiofs.
With virtme-ng 1.32+129.g1ebb7fb this works:
❯❯ unshare -r vng --root ~/src/limmat-kernel/mkosi-rootfs/image/ --user root --rwdir=/mnt=$PWD/tools/testing/selftests/kselftest_install
mount: /etc/fstab: mount point does not exist.
dmesg(1) may have more information after failed mount system call.
cp: cannot stat '/etc/hosts': No such file or directory
mount: /etc/hosts: mount point does not exist.
dmesg(1) may have more information after failed mount system call.
mount: /etc/lvm: mount point does not exist.
dmesg(1) may have more information after failed mount system call.
/usr/lib/tmpfiles.d/journal-nocow.conf:26: Failed to resolve specifier: uninitialized /etc/ detected, skipping.
All rules containing unresolvable specifiers will be skipped.
/run/virtme/guesttools/virtme-init: line 373: deallocvt: command not found
_ _
__ _(_)_ __| |_ _ __ ___ ___ _ __ __ _
\ \ / / | __| __| _ _ \ / _ \_____| _ \ / _ |
\ V /| | | | |_| | | | | | __/_____| | | | (_| |
\_/ |_|_| \__|_| |_| |_|\___| |_| |_|\__ |
|___/
kernel version: 6.14.0-rc3+ x86_64
(CTRL+d to exit)
root@virtme-ng:/# QEMU: Terminated(I think those errors are harmless, just noise because my rootfs is very minimal).
But when I move to a subdirectory I get this failure:
❯❯ unshare -r vng --verbose --root ~/src/limmat-kernel/mkosi-rootfs/image/ --user root --rwdir=/mnt/kselftest_install=$PWD/tools/testing/selftests/kselftest_install
virtme: waiting for virtiofsd to start
virtme: use 'microvm' QEMU architecture
error: cannot initialize /mnt/kselftest_install inside the guest (path must be defined inside a valid overlay)It looks like when I'm not using --overlay-rwdir (which I don't want to use, because I want the guest to be able to write files out to the host), vng expects the guest path to exist on the host.
Now I've written this out, I realise I understand the issue and it's trivial to fix, PR incoming.