[wellylug] virtual windows

Phillip Hutchings sitharus at sitharus.com
Tue Dec 15 17:34:43 NZDT 2009


On 15/12/2009, at 5:27 PM, Xav Paice wrote:

> ----- "Jethro Carr" <jethro.carr at jethrocarr.com> wrote:
>> 
>> On Tue, 2009-12-15 at 17:04 +1300, E Chalaron wrote:
>>> A quick question :
>>> Does a virtualised windows session can access let's say a XFS Raid0
>>> filesystem ?
>> 
>> 
>> Not directly, virtualisation doesn't provide filesystem
>> interpretation,
>> the guest OS has to be able to understand the filesystem type in
>> order
>> to read it.
>> 
>> 
>> In order to read XFS from a Windows guest, you would have to mount
>> the
>> XFS filesystem on the host and share via SMB to the guest.
>> 
> 
> or you could just store a disk image file in qcow or vmdk, or whatever format, on that filesystem.
> 
> Most virtualisation vendors now are agreeing that it's better to use disk images rather than raw logical volumes or LUNs for guests so that the tools available for hypervisors can work, and storage can be shared.

Really? I doubt that a lot. The performance penalty of a disk image vs a raw LVM partition is quite noticeable. Disk images are very convenient for desktop virtualisation software as they can be easily moved, but XenServer and VMWare ESX use the disk directly.

--
Phillip Hutchings
sitharus at sitharus.com



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