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Re: [Xen-devel] Crash DomU and after it Dom0 is frozen.


  • To: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, eXeC001er <execooler@xxxxxxxxx>
  • From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
  • Date: Sat, 23 May 2009 23:20:06 -0700 (PDT)
  • Cc:
  • Delivery-date: Sat, 23 May 2009 23:20:43 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Ubuntu 8.10 Server (64-bit) + Ubuntu Desktop installed via tasksel.

http://bderzhavets.wordpress.com/2009/03/29/setup-xen-unstable-dom0-with-2629-tip-pvops-enabled-kernel/

Just one more notice for OpenSolaris :-

disk = ['phy:/dev/sdb6,0,w','phy:/dev/loop0,6:cdrom,r']

--- On Sun, 5/24/09, eXeC001er <execooler@xxxxxxxxx> wrote:

From: eXeC001er <execooler@xxxxxxxxx>
Subject: Re: [Xen-devel] Crash DomU and after it Dom0 is frozen.
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>, "Xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Date: Sunday, May 24, 2009, 2:07 AM

Ok. I will try.
Which distro of Linux do you use for your Dom0?
Thanks.

2009/5/24 Boris Derzhavets <bderzhavets@xxxxxxxxx>
Ok. Please, take a look at http://www.howtoforge.com/linux_lvm
and remove LVM. Try partition of type 83 like /dev/sdb6 any size
you need.

For example my development box has second drive with partitions
for DomUs and 2 Ubuntu Server Instances
root@ServerXen331:~# fdisk /dev/sdb

The number of cylinders for this disk is set to 30401.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

Disk /dev/sdb: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000e7f99

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1        3647    29294496   83  Linux
/dev/sdb2            3648        4133     3903795   82  Linux swap / Solaris
/dev/sdb3            4134        6134    16073032+  83  Linux
/dev/sdb4            6135       30282   193968810    5  Extended
/dev/sdb5            6135        8135    16073001   83  Linux
/dev/sdb6            8136       10136    16073001   83  Linux
/dev/sdb7           10137       12137    16073001   83  Linux
/dev/sdb8           12138       14138    16073001   83  Linux
/dev/sdb9           14139       16139    16073001   83  Linux
/dev/sdb10          16140       18140    16073001   83  Linux
/dev/sdb11          18141       20141    16073001   83  Linux
/dev/sdb12          20142       22142    16073001   83  Linux
/dev/sdb13          22143       24143    16073001   83  Linux
/dev/sdb14          24144       29796    45407691   83  Linux
/dev/sdb15          29797       30282     3903763+  82  Linux swap / Solaris

To install DomU :-
# losetup -f /var/isos/f10.iso
# losetup -a
Entry into installation python profile:-

disk = ['phy:/dev/sdb6,xvda,w','phy:/dev/loop0,hdc:cdrom,r']

I am pretty sure similar profile would work you.
I guess it's Ubuntu issue with LVM.


Boris.

--- On Sat, 5/23/09, eXeC001er <execooler@xxxxxxxxx> wrote:

From: eXeC001er <execooler@xxxxxxxxx>
Subject: Re: [Xen-devel] Crash DomU and after it Dom0 is frozen.
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>, "Xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Date: Saturday, May 23, 2009, 3:42 PM


I installed guest domain on disk_in_file (disk=['file:/path_to_file']).
The problem disappeared.
What is it? Xen have problem with LVM ?

2009/5/23 eXeC001er <execooler@xxxxxxxxx>
I'm not understood. Can you explain more?


2009/5/23 Boris Derzhavets <bderzhavets@xxxxxxxxx>
Just a second , could you install on /dev/sda(X) , b(X) not LVM ?

Boris.

--- On Sat, 5/23/09, eXeC001er <execooler@xxxxxxxxx> wrote:

From: eXeC001er <execooler@xxxxxxxxx>
Subject: Re: [Xen-devel] Crash DomU and after it Dom0 is frozen.
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>, "Xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Date: Saturday, May 23, 2009, 8:12 AM


No, Dom0 does not restart, it is frozen with blinking Caps and Scroll leds on keyboard.
I try another kernel from OpenSolaris.

2009/5/23 Boris Derzhavets <bderzhavets@xxxxxxxxx>
Do you mean, it reboots your Dom0 ?
If yes, try  something like Nevada b113/b114 (for me better b106 or OS200811) DomU
with ZFS image. Would it cause the same to Dom0 ?
  If yes, then something is wrong with Xen 3.4 or kernel. I have OS0811 and SNV (b106) running with no issues in same Xen-Kernel environment .  Yes, shutdown is slow , some
services may be placed in maintenance mode, but no harm to Dom0.
  If no, I am sorry about NexentaOS.


Boris.

--- On Sat, 5/23/09, eXeC001er <execooler@xxxxxxxxx> wrote:

From: eXeC001er <execooler@xxxxxxxxx>
Subject: Re: [Xen-devel] Crash DomU and after it Dom0 is frozen.Date: Saturday, May 23, 2009, 6:53 AM


Boot is ok. Work is ok. Reboot is crash.

2009/5/23 Boris Derzhavets <bderzhavets@xxxxxxxxx>
What's gonna happen if you try to load NexentaOS PV DomU again ?

Boris.

--- On Sat, 5/23/09, eXeC001er <execooler@xxxxxxxxx> wrote:

From: eXeC001er <execooler@xxxxxxxxx>
Subject: [Xen-devel] Crash DomU and after it Dom0 is frozen.
To: "Xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Date: Saturday, May 23, 2009, 5:25 AM


Hello!
I installed NexentaOS (Opensolaris kernel b104+).
First booting system is true. Before first rebooting system updates boot_archive. It's false.
Computer is freeze and CapsLock and ScrollLock is blinking.
Helps only RESET button.
My system is Ubuntu 8.10, kernel-2.6.30-rc3-tip, Xen-3.4-Stable with debug options enabled.
My hardware: AMD Athlon64X2 5400+, RAM 4GB.
For DomU: mem=1024, LVM disk
DomU loaded with the help of PYGRUB.
In attach: my .config for kernel, debug log from Xen, and domain-builder log.
Thanks.

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