[Xen-users] Strange behavior using xvda disk and iSCSI

[Keith Swett <swettk@xxxxxxxxx>]

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:

(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.

Any suggestions?

--Keith

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