Re: [Xen-devel] Trying to track down odd behavior, errors in xen dmesg

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Thu, Apr 07, 2011 at 10:52:37AM -0500, Keith Swett wrote:
> A bit more info to add, I just tested with AOE (ata over ethernet)
> instead of iSCSI and I see the same issue.

Sure, but does it occur if you devices that are not using the network.
Like a local disk?

> 
> --Keith
> 
> On Thu, Apr 7, 2011 at 8:54 AM, Konrad Rzeszutek Wilk
> <konrad.wilk@xxxxxxxxxx> wrote:
> > On Wed, Apr 06, 2011 at 11:30:02AM -0500, Keith Swett wrote:
> >> Hi,
> >>
> >> I'm having a strange issue with Xen 4.0.1 AMD64 (debian squeeze).
> >> I am importing a iSCSI lun into dom0 from a storage array (using
> >> open-iscsi), this is used as the disk [phy:] for my domU.
> >
> >> If I use HVM, the install works correctly. As soon as I switch to pv
> >> for the disk drivers (after installing a xen kernel in the domU) I get
> >> a slew of messages in xm dmesg:
> > This problem does not occur if the phy is pointing to a local disk?
> >>
> >> (XEN) grant-table.c:1956:d0 Could not get src frame 3f3149
> >> (XEN) printk: 1851 messages suppressed.
> >> (XEN) grant-table.c:1956:d0 Could not get src frame 3f3728
> >> (XEN) printk: 1354 messages suppressed.
> >> (XEN) grant-table.c:1956:d0 Could not get src frame 3f3485
> >> (XEN) printk: 1890 messages suppressed.
> >> (XEN) grant-table.c:1956:d0 Could not get src frame 3f3e58
> >> (XEN) printk: 2153 messages suppressed.
> >> (XEN) grant-table.c:1956:d0 Could not get src frame 3f3c9c
> >> (XEN) printk: 1912 messages suppressed.
> >> (XEN) grant-table.c:1956:d0 Could not get src frame 3f4287
> >> (XEN) printk: 2287 messages suppressed.
> >> (XEN) grant-table.c:1956:d0 Could not get src frame 3f40dc
> >> Disk speed is very slow as well. Running DD in the domU to write a
> >> file to disk causes more error messages to appear.  It also badly
> >> corrupts the disk in some cases.
> >> Testing from a local LVM works without error in all cases.
> >>
> >> Any suggestions?
> >> --Keith
> >>
> >> _______________________________________________
> >> Xen-devel mailing list
> >> Xen-devel@xxxxxxxxxxxxxxxxxxx
> >> http://lists.xensource.com/xen-devel
> >
> 
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