[libvirt-users] Mounting VM filesystem on host while VM running

[Patrick PICHON]

Hello Andrea,


https://www.redhat.com/archives/libvir-list/2016-August/msg00339.html

This looks indeed promising. I had a look to virt-df (from the 
libguestfs-tools), but to install this is embarking a lot of packages 
that I do not want to leave on the server :-(

Kind regards
patrick

On , Andrea Bolognani wrote:
> On Mon, 2016-08-08 at 10:37 +0200, Michal Privoznik wrote:
>> On 08.08.2016 10:23, Patrick PICHON wrote:
>> > 
>> > hello Michal,
>> > 
>> > That was my worries as well, and I think that your advice is probably
>> > the right one. Or even, I'm might request an enhancement to the collect
>> > libvirt plugin to report also FS information.
>>  
>> What I'd like to see is libvirt's ability to spawn commands inside
>> guest. But it is not that simple. I mean, the hardest part is to 
>> design
>> public libvirt API. For instance, we'd have to deal with both blocking 
>> &
>> non-blocking (i.e. long-running) commands; then we would need to give
>> users possibility to read command's output (possibly asynchronously).
>>  
>> With this, you'd just: virDomainRunCommand(dom, 'df', '-h', NULL); or
>> something and you'd be good.
> 
> Not as straightforward as you'd like, but if you use QEMU you
> can already achieve something similar via qemu-guest-agent.
> 
> https://www.redhat.com/archives/libvir-list/2016-August/msg00339.html
> 
> -- 
> Andrea Bolognani / Red Hat / Virtualization