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Re: [virt-tools-list] VirtManager iSCSI



On 08/25/2010 01:26 AM, Mike Hall wrote:
> I successfully added an iSCSI target in VirtManager using '/dev/disk/by-path' as the Target Path, and can now see the LUN on that target in the Volumes listing.
> 
> However, I do not appear able to use this LUN as a location to store a file image when setting up a new VM.
> 
> If I use the path '/dev/disk/by-path/somepath/vm.img' as a storgae location and set an image size of say 20,000MB, I get a message saying that the requested size is greater than 1978MB (or a very similar number), which is of course true. But that LUN is 20GB in size.
> 
> Not finding any way around this, independently of VirtManager I mounted the iSCSI LUN to a point in the filesystem (/vmscsi), set the correct SELinux context on that mount point, and then set up that mount point as a simple FS (filesystem) storage location.
> 
> VM file images now happily install to that location, which is in effect the same location I was trying to use initially.
> 
> I must be missing something basic here, any comments?
> 

This won't automatically work, /dev/disk/by-path/somepath is a block
device, and libvirt/virt-manager won't auto mount it for you.

You can use virt-manager to create an FS pool using the LUN as the
source device, and /vmscsi as the target path. You should then be able
to create images no problem.

Not sure what that size error is all about though.

- Cole


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