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guix system vm, QEMU, virtfs, and the security_model option


From: Fabio Natali
Subject: guix system vm, QEMU, virtfs, and the security_model option
Date: Thu, 30 May 2024 16:15:33 +0100

Hi,

A quick question re the 'guix system vm' command. When used in
combination with '--share=/foo=/bar', the command takes advantage of
QEMU's 'virtfs' option to share a folder between the host and the guest.

Interestingly, the command makes use of the 'security_model=none'
option. An alternative, one that I've seen recommended in some QEMU
docs⁰, would be using 'security_model=mapped-xattr'.

Is there any particular reason why we're using 'none' instead of
'mapped-xattr'?  The reason I'm asking is because I'm struggling with
some permission issues on a shared folder and I'd have a vague intuition
(or some hope) that 'mapped-xattr' might be a solution.

Thanks, best wishes, Fabio.

⁰ https://wiki.qemu.org/Documentation/9psetup'


-- 
Fabio Natali
https://fabionatali.com



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