GNU bug report logs - #59425
guix shell --container fails to mount host filesystem

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: bbb ee <blasforr <at> gmail.com>
To: bug-guix <at> gnu.org
Subject: guix shell --container fails to mount host filesystem
Date: Mon, 21 Nov 2022 00:48:24 +0100

[Message part 1 (text/plain, inline)]

## description
guix shell --container can only mount subdir in /tmp, and fail for all
other dir:
```
# success mount in all subdir of  /tmp
dev_1 <at> dev_1 /tmp/test2$ df .
Filesystem     1K-blocks      Used Available Use% Mounted on
/dev/nvme0n1p7 209921236 180793652  19663932  91% /
dev_1 <at> dev_1 /tmp/test2$ guix shell --container coreutils -- echo Elmo
Elmo
dev_1 <at> dev_1 /tmp/test2$ cd /tmp/
dev_1 <at> dev_1 /tmp$ df .
Filesystem     1K-blocks      Used Available Use% Mounted on
/dev/nvme0n1p7 209921236 180793720  19663864  91% /
dev_1 <at> dev_1 /tmp$ guix shell --container coreutils -- echo Elmo
Elmo

# fail for all other dir
dev_1 <at> dev_1 /tmp$ cd /
dev_1 <at> dev_1 /$ df .
Filesystem     1K-blocks      Used Available Use% Mounted on
/dev/nvme0n1p7 209921236 180793808  19663776  91% /
dev_1 <at> dev_1 /$ guix shell --container coreutils -- echo Elmo
guix shell: error: mount: mount "/" on "/tmp/guix-directory.fKcwvT//":
Invalid argument

dev_1 <at> dev_1 /mnt/recoverData$ cd ~
dev_1 <at> dev_1 ~$ df .
Filesystem     1K-blocks      Used Available Use% Mounted on
/dev/nvme0n1p7 209921236 180793732  19663852  91% /
dev_1 <at> dev_1 ~$ guix shell --container coreutils -- echo Elmo
guix shell: error: mount: mount "/home/dev_1" on
"/tmp/guix-directory.LUuYdU//home/dev_1": Invalid argument


# Other partition is also no mountable:
dev_1 <at> dev_1 /mnt$ cd recoverData/
dev_1 <at> dev_1 /mnt/recoverData$ df .
Filesystem     1K-blocks     Used Available Use% Mounted on
/dev/nvme0n1p8 122503676 91394804  25287412  79% /mnt/recoverData
dev_1 <at> dev_1 /mnt/recoverData$ guix shell --container coreutils -- echo Elmo
guix shell: error: mount: mount "/mnt/recoverData" on
"/tmp/guix-directory.ut68VE//mnt/recoverData": Invalid argument
```

## environment
```
$ uname -a
Linux dev_1 5.18.18 #1 SMP PREEMPT_DYNAMIC 1 x86_64 GNU/Linux
$ guix describe
Generation 9 Oct 22 2022 16:05:50 (current)
  guix 85aff4d
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: 85aff4de30686359ffb50845eb0930c0a18dc8ba
  nonguix 3f00d57
    repository URL: https://gitlab.com/nonguix/nonguix
    branch: master
    commit: 3f00d57adce5d0a185708fd5c7c5ff6f852c2bf7
```

## similar issue:
https://issues.guix.gnu.org/46782

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Message #8 received at 59425 <at> debbugs.gnu.org (full text, mbox):

From: bbb ee <blasforr <at> gmail.com>
To: 59425 <at> debbugs.gnu.org
Subject: only dir which realpath is in /tmp is mountalbe
Date: Mon, 21 Nov 2022 20:50:58 +0100

[Message part 1 (text/plain, inline)]

If I access a unmountable dir from /tmp using symlink, I still can't monnt
it:
```
dev_1 <at> dev_1 /tmp$ ln -s ~ .
dev_1 <at> dev_1 /tmp$ cd dev_1
dev_1 <at> dev_1 /tmp/dev_1$ df .
Filesystem     1K-blocks      Used Available Use% Mounted on
/dev/nvme0n1p7 209921236 180796556  19661028  91% /
dev_1 <at> dev_1 /tmp/dev_1$ guix shell --container coreutils -- echo Elmo
guix shell: error: mount: mount "/home/dev_1" on
"/tmp/guix-directory.X9jW4K//home/dev_1": Invalid argument
dev_1 <at> dev_1 /tmp/dev_1$ realpath /tmp/dev_1
/home/dev_1
```
So not all subdir of /tmp is mountable, only dir which realpath is in /tmp
is mountalbe

[Message part 2 (text/html, inline)]

Message #11 received at 59425 <at> debbugs.gnu.org (full text, mbox):

From: bbb ee <blasforr <at> gmail.com>
To: 59425 <at> debbugs.gnu.org
Subject: guix can't mount mountpoint path, and the home path.
Date: Mon, 21 Nov 2022 21:31:58 +0100

[Message part 1 (text/plain, inline)]

The new tests show guix can mount all path except mountpoint path, and the
home path.
```
dev_1 <at> dev_1 /mnt/recoverData$ mountpoint . ; guix shell --container
coreutils -- echo Elmo
. is a mountpoint
guix shell: error: mount: mount "/mnt/recoverData" on
"/tmp/guix-directory.Fu8aV9//mnt/recoverData": Invalid argument

dev_1 <at> dev_1 /mnt/recoverData/borg_restore$ mountpoint . ; guix shell
--container coreutils -- echo Elmo
. is not a mountpoint
Elmo

dev_1 <at> dev_1 ~$ mountpoint . ; guix shell --container coreutils -- echo Elmo
. is not a mountpoint
guix shell: error: mount: mount "/home/dev_1" on
"/tmp/guix-directory.shXxIg//home/dev_1": Invalid argument

dev_1 <at> dev_1 ~/Downloads$ mountpoint . ; guix shell --container coreutils --
echo Elmo
. is not a mountpoint
Elmo
```

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Message #14 received at 59425 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: bbb ee <blasforr <at> gmail.com>
Cc: 59425 <at> debbugs.gnu.org
Subject: Re: bug#59425: guix shell --container fails to mount host filesystem
Date: Wed, 23 Nov 2022 15:02:57 +0100

Hi,

bbb ee <blasforr <at> gmail.com> skribis:

> dev_1 <at> dev_1 /mnt/recoverData$ guix shell --container coreutils -- echo Elmo
> guix shell: error: mount: mount "/mnt/recoverData" on
> "/tmp/guix-directory.ut68VE//mnt/recoverData": Invalid argument
> ```
>
> ## environment
> ```
> $ uname -a
> Linux dev_1 5.18.18 #1 SMP PREEMPT_DYNAMIC 1 x86_64 GNU/Linux
> $ guix describe
> Generation 9 Oct 22 2022 16:05:50 (current)
>   guix 85aff4d
>     repository URL: https://git.savannah.gnu.org/git/guix.git
>     branch: master
>     commit: 85aff4de30686359ffb50845eb0930c0a18dc8ba


I believe this was fixed in commit
c585b4bc68813a351d6a87d19b9adf4041506355, see
<https://issues.guix.gnu.org/59185>.

Could you check something like:

  guix time-machine --commit=c585b4bc68813a351d6a87d19b9adf4041506355 -- \
    shell -C coreutils

?

Thanks in advance,
Ludo’.

Message #17 received at 59425 <at> debbugs.gnu.org (full text, mbox):

From: bbb ee <blasforr <at> gmail.com>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 59425 <at> debbugs.gnu.org
Subject: Re: bug#59425: guix shell --container fails to mount host filesystem
Date: Wed, 23 Nov 2022 15:20:47 +0100

[Message part 1 (text/plain, inline)]

Nice! That runs. Thank you. I will upgrade my guix.

Le mer. 23 nov. 2022 à 15:03, Ludovic Courtès <ludo <at> gnu.org> a écrit :

> Hi,
>
> bbb ee <blasforr <at> gmail.com> skribis:
>
> > dev_1 <at> dev_1 /mnt/recoverData$ guix shell --container coreutils -- echo
> Elmo
> > guix shell: error: mount: mount "/mnt/recoverData" on
> > "/tmp/guix-directory.ut68VE//mnt/recoverData": Invalid argument
> > ```
> >
> > ## environment
> > ```
> > $ uname -a
> > Linux dev_1 5.18.18 #1 SMP PREEMPT_DYNAMIC 1 x86_64 GNU/Linux
> > $ guix describe
> > Generation 9 Oct 22 2022 16:05:50 (current)
> >   guix 85aff4d
> >     repository URL: https://git.savannah.gnu.org/git/guix.git
> >     branch: master
> >     commit: 85aff4de30686359ffb50845eb0930c0a18dc8ba
>
>
> I believe this was fixed in commit
> c585b4bc68813a351d6a87d19b9adf4041506355, see
> <https://issues.guix.gnu.org/59185>.
>
> Could you check something like:
>
>   guix time-machine --commit=c585b4bc68813a351d6a87d19b9adf4041506355 -- \
>     shell -C coreutils
>
> ?
>
> Thanks in advance,
> Ludo’.
>

[Message part 2 (text/html, inline)]

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