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[Xen-users] Has my Xen guest domain been started?

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Donglai Zhang <dlzhangster@xxxxxxxxx>
  • Date: Tue, 9 Jun 2009 14:13:00 +0930
  • Delivery-date: Mon, 08 Jun 2009 21:43:47 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>


I have installed Xen 3.4 ( on my (Fedora 7) linux box. And started with the Xen 3.4 kernel. I also installed a Ubuntu 9.0.4 guest system on /dev/sda7.

Start the machine and log in to Fedora.

uname -r

Then I started xend. 
xend start
Every is fine.

Start my first guest on xen:
xm create -c xm01dlzhang vimid=1              //xm01dlzhang is the config file

*****Content of  the config file********************
kernel = "/boot/vmlinuz-"
memory = 256
name = "ExampleDomain01"
vif = [ '' ]
disk = [ 'phy:sda7,sda7,w' ]
root = "/dev/sda7 ro"
extra = "5"
*************Other contents are all commented out**********
//Following are the output from the console.

Using config file "./xm01dlzhang".
Started domain ExampleDomain01 (id=4)
Linux version (dlzhang@red) (gcc version 4.1.2 20070925 (Red Hat 4.1.2-27)) #1 SMP Thu Jun 4 12:19:55 CST 2009
BIOS-provided physical RAM map:
 Xen: 0000000000000000 - 0000000010800000 (usable)
0MB HIGHMEM available.
264MB LOWMEM available.
NX (Execute Disable) protection: active
ACPI in unprivileged domain disabled
Allocating PCI resources starting at 20000000 (gap: 10800000:ef800000)
Detected 2135.115 MHz processor.
Built 1 zonelists.  Total pages: 67584
Kernel command line: root=/dev/sda7 ro 5

//Some other information here

md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
EXT2-fs warning (device sda7): ext2_fill_super: mounting ext3 filesystem as ext2
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 196k freed
  ** WARNING: Currently emulating unsupported memory accesses  **
  **          in /lib/tls glibc libraries. The emulation is    **
  **          slow. To ensure full performance you should      **
  **          install a 'xen-friendly' (nosegneg) version of   **
  **          the library, or disable tls support by executing **
  **          the following as root:                           **
  **          mv /lib/tls /lib/tls.disabled                    **
  ** Offending process: init (pid=717)                         **

Then it stops here, seems not dead though.  After a while , I checked the status of xen with
xm list
[root@red boot]# xm list
Name                                        ID   Mem VCPUs      State   Time(s)
Domain-0                                     0   510     2     r-----    850.3
ExampleDomain01                              4   254     1     -b----     21.9

It seems the guest domain has been blocked (as shown b), but I am not sure what's going on there? Has guest domain been started or not? Or it is just blocked, if so, how can I unblock it?  If you can pointing me to a tutorial that will be good too.

Thanks in advance!
Donglai Zhang
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