I will try that. I have 5 servers in my XCP Cluster. Do I have to modify anything in SR config?
On Fri, May 18, 2012 at 12:12 PM, Dave Scott <dave.sc...@eu.citrix.com>wrote: > Hi > > Anil wrote: > > On 18 May 2012, at 14:58, Mike McClurg <mike.mccl...@citrix.com> wrote: > > > > > On 18/05/12 11:49, Carlos Eduardo Tavares Terra wrote: > > >> Do I need to do any special configuration in XCP 1.1 or in the SRs > > to be > > >> capable of sharing a VDI between two virtual machines? > > >> Is it possible to do in XCP? > > > > > > You could possibly do this if only one VM attaches the disk RW, but > > you should definitely not do this if you want more than one of the VMs > > to attach the disk RW. For that, you should use something like NFS > > instead. > > > > I think Carlos is using a concurrent file system or database, and so > > sharing the RW VBD is fine. > > > > Isn't this just a case of marking the VBDs as shareable to disable the > > xapi safety check? > > As well as marking the VDI as sharable you also have to be careful with > .vhds. If all the VMs sharing the VDI are on the same host they'd all share > the same "tapdisk" process and this would be fine. If they were sharing the > VDIs across hosts then you'd have multiple tapdisk writing the .vhd > metadata concurrently which would lead to corruption. > > If you need to share the VDIs across hosts then try creating a "raw" > format VDI, using > > $ xe vdi-create sr-uuid=... name-label=foo virtual-size=... type=user > sm-config:type=raw > > Cheers, > Dave > > _______________________________________________ > Xen-api mailing list > Xen-api@lists.xen.org > http://lists.xen.org/cgi-bin/mailman/listinfo/xen-api > -- Carlos Eduardo Tavares Terra Red Hat Certified Engineer Consultor em Infraestrutura de TI GNU/Linux #413291 [http://counter.li.org]
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