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Re: [Qemu-devel] Idea: fuse-kvm filesystem
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From: |
Jan Kiszka |
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Subject: |
Re: [Qemu-devel] Idea: fuse-kvm filesystem |
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Date: |
Thu, 10 May 2012 11:09:03 -0300 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2012-05-10 09:29, Avi Kivity wrote:
> Currently when you mount a filesystem, you face two issues:
> - you have to be root
> - if the media is untrusted, it can exploit your kernel
>
> With kvm and fuse, we can have a virtualized kernel mount the
> filesystem, and re-export to the host, which mounts it using a fuse
> interface. This solves both problems, at the expense of speed and
> simplicity. In theory this can be used for mounting untrusted USB
> sticks (perhaps only for the less well tested filesystems).
>
I preferred mountlo [1] for this task, specifically due to the quick
mount time and reasonable performance. Unfortunately, this setup,
specifically uml, required some love back then when I last tried.
Jan
[1] http://sourceforge.net/projects/fuse/files/mountlo
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