From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keith Swett Subject: Trying to track down odd behavior, errors in xen dmesg Date: Wed, 6 Apr 2011 11:30:02 -0500 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org 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: (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