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xen-users
Re: [Xen-users] GPLPV and LUN's on a storage
On Tue, Oct 27, 2009 at 07:35:22AM +0100, Klaus Steinberger wrote:
>
> >Do you use phy:, file: or tap:aio: ?
>
> phy:
>
Ok. Hmm.. that should be safe.
The pygrub problem is most probably different issue, since with pygrub
you have two different programs accessing the same storage: domU with
for example phy: driver, and then the dom0 userspace pygrub using normal
non-direct calls, which causes the problem.
Redhat fixed pygrub by making pygrub use O_DIRECT to bypass dom0 kernel
caches.
What's your dom0 OS/kernel/Xen? RHEL5.4?
-- Pasi
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