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Re: [Xen-devel] on starting HVM-domU whole system freezes with "soft loc

To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Subject: Re: [Xen-devel] on starting HVM-domU whole system freezes with "soft lockup - CPU X stuck for XXs! [qemu-dm:...]" [xen 4.0, xen 4.1]
From: "MadLoisae@xxxxxxx" <MadLoisae@xxxxxxx>
Date: Tue, 19 Apr 2011 00:35:33 +0200
Cc: Keir Fraser <keir.xen@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
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I have to revise my last email.
Not only the initialisation is slow, also further I/O stalls the dom0.
This is an Intel 945GM/E chipset, with an IDE-CF-Card as / (ext3) filesystem and an IDE-2.5" hardisk (/home, ext4). IDE-CF-card is slower, only able to read/write about 35MBytes/second, the 2.5" HDD is at about 55MBytes/sec. Both, the ISO-image and the virtual harddisk are on the /home directory and therefore on the harddisk. Is there maybe an I/O problem? Dom0 is able to do everysth. like usual on all filesystems, both disks are without errors.


On 04/18/2011 11:02 PM, Konrad Rzeszutek Wilk wrote:
On Sat, Apr 16, 2011 at 12:11:34AM +0200, MadLoisae@xxxxxxx wrote:
I just saw that I made two threads instead of one ... hopefully this
email now receives in the correct one. ;)
The log file is a bit stange. The HVM says:

(XEN) HVM1: ata0 master: QEMU HARDDISK ATA-7 Hard-Disk (   0 MBytes)

Is your /home/guest1.dsk really 0 megabytes? Have you
tried to use a physical device (say LVM logical volume) just to eliminate
it being the blktap at fault here? (there was a bug in the blktap
driver that Daniel posted recently here).

Instead of using the configuration with the sxp expression can you just
post the .xm one please? They are much easier to read.

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