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bug#30667: 'guix system vm' must keep mount_tag-length limited below 32


From: Ludovic Courtès
Subject: 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’.





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