crossDistro mount's no longe workr

[cforce]

Version

Microsoft Windows [Version 10.0.19045.2364]

WSL Version

• WSL 2
• WSL 1

Kernel Version

Linux version 5.15.79.1-microsoft-standard-WSL2 (oe-user@oe-host) (x86_64-msft-linux-gcc (GCC) 9.3.0, GNU ld (GNU Binutils) 2.34.0.20200220)

Distro Version

Ubuntu 22.04 and AmazonLinux2(https://aws.amazon.com/jp/blogs/developer/developing-on-amazon-linux-2-using-windows/,

Other Software

WSL version: 1.0.3.0
Kernel version: 5.15.79.1
WSLg version: 1.0.47
MSRDC version: 1.2.3575
Direct3D version: 1.606.4
DXCore version: 10.0.25131.1002-220531-1700.rs-onecore-base2-hyp
Windows version: 10.0.19045.2364
crossDistro feature since https://learn.microsoft.com/en-us/windows/wsl/release-notes#build-18970

Repro Steps

I was using mounting the distro Ubuntu in the distro Amazon2 by using on both
/etc/wsl.conf

[wsl2]
memory=8GB
processors=2

[network]
generateResolvConf = false

[interop]
enabled = true
appendWindowsPath = false

# Automatically mount Windows drive when the distribution is launched
[automount]
crossDistro = true
enabled = true
root = /

Expected behavior

Allow to access Ubuntu under Amazon2 distro via /mnt/wsl/Ubuntu or vice versa
/mnt/wsl/Amazon2

On Ubuntu:

>findmnt / -o PROPAGATION,TARGET
PROPAGATION TARGET
shared /

>? ll /
total 2.0M
drwxr-xr-x 27 root root 4.0K Jan 9 14:51 ./
drwxr-xr-x 27 root root 4.0K Jan 9 14:51 ../
lrwxrwxrwx 1 root root 7 Feb 20 2021 bin -> usr/bin/
drwxr-xr-x 2 root root 4.0K Feb 20 2021 boot/
drwxrwxrwx 1 root root 4.0K Jan 2 22:19 c/
drwxr-xr-x 3 root root 4.0K Oct 21 17:51 datadog/
drwxr-xr-x 10 root root 3.1K Jan 9 14:55 dev/
drwxr-xr-x 119 root root 12K Jan 9 15:01 etc/
drwxr-xr-x 5 root root 4.0K Dec 7 15:27 git/
drwxr-xr-x 6 root root 4.0K Dec 13 08:49 home/
drwxr-xr-x 9 root root 4.0K Jan 4 11:07 include/
-rwxrwxrwx 1 root root 1.9M Jan 1 1970 init*
lrwxrwxrwx 1 root root 7 Feb 20 2021 lib -> usr/lib/
lrwxrwxrwx 1 root root 9 Feb 20 2021 lib32 -> usr/lib32/
lrwxrwxrwx 1 root root 9 Feb 20 2021 lib64 -> usr/lib64/
lrwxrwxrwx 1 root root 10 Feb 20 2021 libx32 -> usr/libx32/
drwx------ 2 root root 16K Apr 10 2019 lost+found/
drwxr-xr-x 2 root root 4.0K Feb 20 2021 media/
drwxr-xr-x 6 root root 4.0K Jan 28 2022 mnt/
drwxr-xr-x 5 root root 4.0K Dec 15 10:42 opt/
dr-xr-xr-x 252 root root 0 Jan 9 14:51 proc/
drwx------ 24 noroot root 4.0K Jan 9 15:03 root/
drwxr-xr-x 6 root root 200 Jan 9 14:52 run/
lrwxrwxrwx 1 root root 8 Feb 20 2021 sbin -> usr/sbin/
drwxr-xr-x 3 root root 4.0K Jan 4 10:25 share/
drwxr-xr-x 6 root root 4.0K Feb 20 2021 snap/
drwxr-xr-x 2 root root 4.0K Feb 20 2021 srv/
drwxr-xr-x 6 root root 4.0K Jan 4 11:48 staticlibs/
dr-xr-xr-x 11 root root 0 Jan 9 14:51 sys/
drwxrwxrwt 6 root root 12K Jan 9 14:53 tmp/
drwxr-xr-x 14 root root 4.0K Feb 19 2022 usr/
drwxr-xr-x 13 root root 4.0K Feb 20 2021 var/
drwxrwxrwt 5 root root 120 Jan 9 14:52 wsl/
drwxrwxrwt 7 root root 300 Jan 9 14:51 wslg/

? ll /wsl
total 8.0K
drwxrwxrwt 5 root root 120 Jan 9 14:52 ./
drwxr-xr-x 27 root root 4.0K Jan 9 14:51 ../
drwxr-xr-x 4 root root 100 Jan 9 14:52 docker-desktop/
drwxr-xr-x 3 root root 60 Jan 9 14:52 docker-desktop-bind-mounts/
drwxr-xr-x 4 root root 80 Jan 9 14:52 docker-desktop-data/
-rw-r--r-- 1 root root 197 Jan 9 14:51 resolv.conf

? ll /mnt/wsl/
total 12K
drwxr-xr-x 3 root root 4.0K Jan 8 12:30 ./
drwxr-xr-x 6 root root 4.0K Jan 28 2022 ../
drwxr-xr-x 2 root root 4.0K Jan 8 12:30 Ubuntu/

? ll /mnt/wsl/Ubuntu
total 8.0K
drwxr-xr-x 2 root root 4.0K Jan 8 12:30 ./
drwxr-xr-x 3 root root 4.0K Jan 8 12:30 ../

On Apache2:

-bash-4.2# ll /mnt/
c/ wsl/
-bash-4.2# ll /mnt/wsl/
Amazon2/ Ubuntu/
-bash-4.2# ll /mnt/wsl/Ubuntu/
total 0

-bash-4.2# ll /mnt/wsl/Amazon2/
total 0

-bash-4.2# ll /
total 1960
lrwxrwxrwx 1 root root 7 Jun 13 2022 bin -> usr/bin
dr-xr-xr-x 2 root root 4096 Apr 9 2019 boot
drwxrwxrwx 1 root root 4096 Jan 2 22:19 c
drwxr-xr-x 10 root root 3140 Jan 9 14:55 dev
drwxr-xr-x 49 root root 4096 Jan 9 15:04 etc
drwxr-xr-x 2 root root 4096 Apr 9 2019 home
-rwxrwxrwx 1 root root 1939720 Jan 1 1970 init
lrwxrwxrwx 1 root root 7 Jun 13 2022 lib -> usr/lib
lrwxrwxrwx 1 root root 9 Jun 13 2022 lib64 -> usr/lib64
drwxr-xr-x 2 root root 4096 Jun 13 2022 local
drwx------ 2 root root 16384 Apr 10 2019 lost+found
drwxr-xr-x 2 root root 4096 Apr 9 2019 media
drwxr-xr-x 4 root root 4096 Dec 23 09:29 mnt
drwxr-xr-x 2 root root 4096 Apr 9 2019 opt
dr-xr-xr-x 265 root root 0 Jan 9 15:04 proc
dr-xr-x--- 4 root root 4096 Jan 8 12:42 root
drwxr-xr-x 6 root root 120 Jan 9 15:04 run
lrwxrwxrwx 1 root root 8 Jun 13 2022 sbin -> usr/sbin
drwxr-xr-x 2 root root 4096 Apr 9 2019 srv
dr-xr-xr-x 11 root root 0 Jan 9 14:51 sys
drwxrwxrwt 7 root root 4096 Jan 8 13:10 tmp
drwxr-xr-x 13 root root 4096 Jun 13 2022 usr
drwxr-xr-x 18 root root 4096 Jun 13 2022 var
drwxrwxrwt 5 root root 120 Jan 9 14:52 wsl
drwxrwxrwt 7 root root 300 Jan 9 15:04 wslg

-bash-4.2# findmnt / -o PROPAGATION,TARGET
PROPAGATION TARGET
shared /

I also tried
1.) adding this as well to /etc/wsl.conf

[boot]
command="mount --make-rshared /"

2.) manually executing on each Distro

if [ ! -d "/mnt/wsl/$WSL_DISTRO_NAME" ]; then
mkdir "/mnt/wsl/$WSL_DISTRO_NAME"
fi
## If mount point directory is not mounted upon, bind mount fs.
if ! mountpoint -q -- "/mnt/wsl/$WSL_DISTRO_NAME"; then
mount --make-rshared --bind --make-private / "/mnt/wsl/$WSL_DISTRO_NAME"
fi
findmnt / -o PROPAGATION,TARGET

Expected Behavior

On both Distros the other one's file system is read/write mounted (e.g under /mnt/wsl/Ubuntu and /mnt/wsl/Amazon2
It once worked and i don't know what upgrade? broke it.

Actual Behavior

no mount for other distro found

Diagnostic Logs

No response

[elsaco]

@cforce please see issue #4654 for what changed!

[cforce]

Did you read my report completely. As I said I also tried that manual mount approach which was not fixing it -see 2.)

[elsaco]

@cforce it does work! It doesn't show up automatically under /mnt/wsl but whatever you mount under this path it pops up in other distors.

[benhillis]

Sharing state between distros should be done explicitly now, via mounting in /mnt/wsl. Distros are no longer mounted there automatically.

[cforce]

I have run below on both DIstros and still there are no mounts of own and/or other Distros under /mnt/wsl.

if [ ! -d "/mnt/wsl/$WSL_DISTRO_NAME" ]; then
mkdir "/mnt/wsl/$WSL_DISTRO_NAME"
fi
## If mount point directory is not mounted upon, bind mount fs.
if ! mountpoint -q -- "/mnt/wsl/$WSL_DISTRO_NAME"; then
mount --make-rshared --bind --make-private / "/mnt/wsl/$WSL_DISTRO_NAME"
fi

Maybe related to #4139

However it worked formerly as automount