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[Xen-users] dev/xen/evtchn disappears, HVM fails, xen 4.0.1-1 Debian Squeeze


  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Erik Hjelmås <erik.hjelmas@xxxxxxxxx>
  • Date: Sun, 19 Sep 2010 09:17:57 +0200
  • Delivery-date: Sun, 19 Sep 2010 00:19:14 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Hi,

(forgive me if this should be sent to a Debian list since the problem might be Debian specific)

my server running xen 4.0.1 and Debian Squeeze (with all the xen 4.0.1 debian packages, everything installed using aptitude) was working fine for PV and HVM guest until an aptitude upgrade on Monday, and Ive been spending the last couple of days trying to figure this out:

- I boot my server and as long as a stick with PV guests Im fine, if I try to start a HVM guest, the HVM guest will not boot and /dev/xen/evtchn disappears, and any PV guest I start now will just take off with 100% CPU


in other words:


zimbu:/home/erikh# ls -l /dev/xen/

total 0
crw------- 1 root root 10, 57 Sep 17 14:32 evtchn
crw------- 1 root root 10, 62 Sep 17 14:32 gntdev

zimbu:/home/erikh# xm create /opt/mln/projects/root/vm32/cube_xen.hvm

Using config file "/opt/mln/projects/root/vm32/cube_xen.hvm".
Error: Domain 'cube.vm32' does not exist.

zimbu:/home/erikh# ls -l /dev/xen/

total 0
crw------- 1 root root 10, 62 Sep 17 14:32 gntdev

zimbu:/home/erikh# cat /var/log/xen/qemu-dm-cube.vm32.log

domid: 5
-c config qemu network with xen bridge for
tap5.0 lan.vm32
Strip off blktap sub-type prefix to /dev/mln-images/cube.vm32 (drv 'aio')
Watching /local/domain/0/device-model/5/logdirty/cmd
Watching /local/domain/0/device-model/5/command
qemu_map_cache_init nr_buckets = 10000 size 4194304
shared page at pfn feffd
buffered io page at pfn feffb
Guest uuid = 9d1d2624-9d17-c913-9f27-ce4b705f47c7
Time offset set 0
ERROR Internal error: Could not open event channel interface (22 = Invalid argument)
open: Invalid argument
Unable to find x86 CPU definition

zimbu:/home/erikh# dpkg -l | grep xen
libxenstore3.0                      4.0.1-1
linux-image-2.6.32-5-xen-amd64      2.6.32-21
xen-hypervisor-4.0-amd64            4.0.1-1
xen-linux-system-2.6.32-5-xen-amd64 2.6.32-21
xen-qemu-dm-4.0                     4.0.1-1
xen-tools                           4.2~rc1-1
xen-utils-4.0                       4.0.1-1
xen-utils-common                    4.0.0-1
xenstore-utils                      4.0.1-1
zimbu:/home/erikh#


any help greatly appreciated...

/Erik
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