[debbugs-tracker] bug#30667: closed ('guix system vm' must keep mount_tag-length limited below 32 bytes for --expose and --share)

[GNU bug Tracking System]

Your message dated Thu, 08 Mar 2018 11:56:57 +0100
with message-id <address@hidden>
and subject line Re: bug#30667: 'guix system vm' must keep mount_tag-length 
limited below 32 bytes for --expose and --share
has caused the debbugs.gnu.org bug report #30667,
regarding 'guix system vm' must keep mount_tag-length limited below 32 bytes 
for --expose and --share
to be marked as done.

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30667: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=30667
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--- Begin Message --- Subject: 'guix system vm' must keep mount_tag-length limited below 32 bytes for --expose and --share Date: Thu, 1 Mar 2018 19:05:50 +0100

I prepared a QEMU VM with:

./pre-inst-env  guix system vm \
--expose=/home/bjoern/digikam-testpool/=/image-pool \
../guix-systems/digikam-test.scm

Starting the VM it complained:

$> /gnu/store/zg5a42vcz4qf6h3yrdrijyaxkbhr967s-run-vm.sh 
qemu-system-x86_64: -virtfs 
local,path=/home/bjoern/digikam-testpool/,security_model=none,mount_tag=TAG_home_bjoern_digikam-testpool_:
 mount tag 'TAG_home_bjoern_digikam-testpool_' (33 bytes) is longer than 
maximum (31 bytes)

I haven't looked into the Guix code, but I suppose there is somewhere
a place where the command line and the '/etc/fstab' file is filled
with the mount tags.

Here we should check the tag-length and shrink it (uniquely) if
it is more than 31 bytes in size.

Björn

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--- End Message ---

> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#30667: 'guix system vm' must keep mount_tag-length limited below 32 bytes for --expose and --share
>
>
>
>
> Date: 
>
> Thu, 08 Mar 2018 11:56:57 +0100
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux)
>
>
>
>
> Hi Björn,
>
> Björn Höfling <address@hidden> skribis:
>
> > I prepared a QEMU VM with:
> >
> > ./pre-inst-env  guix system vm \
> > --expose=/home/bjoern/digikam-testpool/=/image-pool \
> > ../guix-systems/digikam-test.scm
> >
> > Starting the VM it complained:
> >
> > $> /gnu/store/zg5a42vcz4qf6h3yrdrijyaxkbhr967s-run-vm.sh 
> > qemu-system-x86_64: -virtfs 
> > local,path=/home/bjoern/digikam-testpool/,security_model=none,mount_tag=TAG_home_bjoern_digikam-testpool_:
> >  mount tag 'TAG_home_bjoern_digikam-testpool_' (33 bytes) is longer than 
> > maximum (31 bytes)
>
> Fixed in dffc5ab5e47e45b94188828205c8d567994926ad, thanks!
>
> Ludo’.
>
>
> --- End Message ---