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[Xen-devel] Re: [PATCH] Fix restore handling checks

To: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
Subject: [Xen-devel] Re: [PATCH] Fix restore handling checks
From: Michal Novotny <minovotn@xxxxxxxxxx>
Date: Wed, 23 Jun 2010 13:29:56 +0200
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>, "'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>
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On 06/23/2010 01:27 PM, Ian Jackson wrote:
Paolo Bonzini writes ("Re: [PATCH] Fix restore handling checks"):
We tried to get that to work, and we could not really find a device
error that worked reliably in the guests.  We often got infinite loops
on mount or little after that, on both Linux and Windows.
That's fine.  If the admins don't want that then they can use SCSI or
PV or simply not tell the guest to write to the device.

Disallowing the configuration entirely just because the error handling
is suboptimal (but safe!) is not correct.

Ian.

Why do you think so, Ian? This follows the IDE specifications to disallow read-only IDE disks since the specs doesn't support IDE read-only disks. The only read-only device being supported by IDE specs is the CD-ROM device.

Michal

--
Michal Novotny<minovotn@xxxxxxxxxx>, RHCE
Virtualization Team (xen userspace), Red Hat


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