[ovirt-users] iSCSI self hosted engine

Jiri Moskovcak jmoskovc at redhat.com
Thu Aug 28 07:02:18 UTC 2014


On 08/27/2014 02:29 PM, Markus Mathes wrote:
> Hi,
>
> I thought about a self hosted engine setup using 2 hosts connected to
> a iSCSI storage.
> A few questions arose and I didn't succeed finding the answers on the
> web. I somehow don't get how the iSCSI integration in ovirt works.
>
> - As far as I understand from the information I found, all iSCSI
> access for the virtual machines is done through one host. Does this
> mean, that all disk related traffic of the other host is going to the
> first host and then to the iSCSI storage?

- no, every host has a separate access to the storage, only the storage 
setup is done by a single host and then it's available for everyone.

In this case. How are the
> virtual disk images then made available for the VMs on the other host?
> - If the first host fails, the engine will get started on the other
> host. Will the engine deal with the fact, that now the iSCSI storage
> domain has to be accessed using the other host. Or is iSCSI just not
> suitable for this kind of usage.
> - Has the self hosted engine to use a different iSCSI lun than the
> storage domain?
>
> Thanks
> Markus
>




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