Re: [Xen-devel] block-iscsi with Xen 4.5 / 4.6

[George Dunlap <dunlapg@xxxxxxxxx>]

On Fri, Apr 15, 2016 at 7:59 AM, Steven Haigh <netwiz@xxxxxxxxx> wrote:
> Hi all,
>
> I'm wading through the somewhat confusing world of documentation regarding
> storing DomU disk images on an iSCSI target.
>
> I'm getting an error when using pygrub of:
> OSError: [Errno 2] No such file or directory:
> 'iqn=iqn.1986-03.com.sun:02:ff2d12c0-b709-4ec0-999d-976506c666f5,portal=192.168.133.250'
>
> After much hunting, I came across this post:
> http://lists.xen.org/archives/html/xen-devel/2013-04/msg02796.html
>
> As such, I'm wondering if it is still required to *NOT* use pygrub for
> booting iSCSI DomUs?
>
> If so, what are the alternatives? Using pv-grub / pv-grub2? Something else?
>
> As I'm running EL7.2, I figure if I have to use a pv-grub based solution, it
> would have to be pv-grub2?

I see you've got a fix already.  But even so, if using pv-grub2 is a
possibility for you, it might be worth pursuing anyway:
- it will be much more secure than pygrub
- it will probably more reliable, since it's actually a native grub
binary ported to Xen, while pygrub is just a python script that
attempts to duplicate some of grub's functionality.

 -George

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