[zfs-discuss] best practice to pass zfs volume to qemu/kvm

Ole Traupe ole.traupe at tu-berlin.de
Thu Feb 25 10:54:14 EST 2016


I think he's still looking for an internal/simulated network solution 
(direct host-guest communication).


On 25.02.2016 16:45, Gordan Bobic via zfs-discuss wrote:
> Can you elaborate exactly what you are trying to do? Share something 
> from the host running Samba to a Windows guest? This is exactly what I 
> do on a number of my systems. Which part are you having difficulties with?
>
>
> On Thu, Feb 25, 2016 at 3:42 PM, thibaut noah <thibaut.noah at gmail.com 
> <mailto:thibaut.noah at gmail.com>> wrote:
>
>     If anybody swing by and knows how to configure sharing with samba
>     to a windows guest (libvirt) with a network bridge please let me know.
>     I can even throw a few bucks if needed (yes i'm on it since last
>     mail).
>
>     2016-02-16 14:34 GMT+01:00 thibaut noah <thibaut.noah at gmail.com
>     <mailto:thibaut.noah at gmail.com>>:
>
>         Good to know, will check if it is possible to compress data
>         already on disks like with a scrum or something.
>
>         Yup that is what is was thinking about.
>         Thanks for the help guys, gonna put my head in samba documentation
>
>         2016-02-16 13:22 GMT+01:00 Gordan Bobic via zfs-discuss
>         <zfs-discuss at list.zfsonlinux.org
>         <mailto:zfs-discuss at list.zfsonlinux.org>>:
>
>
>             On Tue, Feb 16, 2016 at 11:52 AM, thibaut noah
>             <thibaut.noah at gmail.com <mailto:thibaut.noah at gmail.com>>
>             wrote:
>
>                 Hum, i remember reading somewhere that compression
>                 should have 4cores or something like this.
>
>
>             Nowhere near. LZ4 is close enough to free in terms of CPU
>             hit that the recommendation is to enable it for everything
>             except file systems with incompressible data (e.g.
>             compressed media libraries).
>
>
>
>                 Basically using the redundancy of the mirror to remove
>                 disks without loosing datas, creating zvol on the disk
>                 remove from the mirror, put all datas to the zvol and
>                 then recreate redundancy and voila.
>
>
>             If you mean to use this to create a backup server, that
>             would work. But if you mean to plug the disk you removed
>             back into the primary server, you would have to erase it
>             before re-adding it as a mirror, and then resilver all of
>             the data to it.
>
>
>
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>
>
>
>
>
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