RE: [Xen-users] Shared storage between Domu's

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Matt Okeson-Harlow
> Sent: 08 March 2007 15:09
> To: Niv Elad
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] Shared storage between Domu's
> 
> Niv,
> 
> Setup NFS/AFS/Samba on a domU and share your disk that way?
> Xen won't let you mount a slice in two domUs that I am aware of.

As described in the two other post on this subject, you can share it,
but you have to have a file-system that is "shareable". And you need to
use "w!" instead of "w" to tell Xen that "Yes, I know I'm sharing this
file-system" [and if you actually don't care about the content of your
disk-image or the overall stability of your domain, you can of course
force multiple domains to access the same disk-image even if it's not
actually shareable - but that's like playing with matches in a petrol
station...]

--
Mats
> 
> On Thu, Mar 08, 2007 at 03:28:13PM +0200, Niv Elad wrote:
> > 
> > Hello
> > 
> > I have two domains running on the same Dom0.
> > I want to allocate shared disk  to both of them (i want to simulate
> > cluster envinroment).
> > 
> > Does anyone know whether this is possible and if so how can 
> it be done?
> > 
> > This is my disk defenition for the domains -
> > 
> > DomU1:
> > 
> disk=['phy:vgxen01/lv_linva04_hda,hda,w','phy:vgxen01/lv_linva
> 04_06_hdb,
> > hdb,w']
> > 
> > DomU2:
> > 
> disk=['phy:vgxen01/lv_linva06_hda,hda,w','phy:vgxen01/lv_linva
> 04_06_hdb,
> > hdb,w']
> > 
> > When trying to start second DomU i am getting the following -
> > 
> > Error: Device 5632 (vbd) could not be connected.
> > Device /dev/vgxen01/lv_linva04_06_hdb is mounted in a guest domain,
> > and so cannot be mounted now.
> > 
> > 
> > Cheers
> > 
> > Niv
> > 
> > 
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> -- 
> att Okeson-Harlow
> Sen gutoj malgrandaj maro ne ekzistus
> 



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