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Re: [Xen-users] xen won't start


  • To: matt@xxxxxxxxxxxxxxxxxx
  • From: Alaa eldin <sirash23@xxxxxxxxx>
  • Date: Tue, 2 Mar 2010 05:29:33 -0500
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Tue, 02 Mar 2010 02:30:35 -0800
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

xm command work alone when i do
xm list
Error: Unable to connect to xend: No such file or directory. Is xend running?
and this output of
uname -r
2.6.18-164.11.1.el5xen
[root@dom0 boot]# ps aux | grep xen
root        21  0.0  0.0      0     0 ?        S<   04:55   0:00 [xenwatch]
root        22  0.0  0.0      0     0 ?        S<   04:55   0:00 [xenbus]
root      3480  0.0  0.0   8384   820 ?        S    04:56   0:00 xenstored --pid-file /var/run/xenstore.pid
root      3488  0.0  0.0  24728   412 ?        Sl   04:56   0:00 xenconsoled
root      3742  0.0  0.1 171476  9132 ?        S    05:00   0:00 /usr/bin/python2.4 /usr/sbin/xend restart
root      3743  0.0  0.1 192356 10288 ?        Sl   05:00   0:00 /usr/bin/python2.4 /usr/sbin/xend restart
root      5330  0.0  0.0  61144   748 pts/0    S+   05:30   0:00 grep xen



On Tue, Mar 2, 2010 at 5:22 AM, Alaa eldin <sirash23@xxxxxxxxx> wrote:
default=1
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.18-164.el5xen)
    root (hd0,0)
    kernel /xen.gz-3.4.2
module /vmlinuz-2.6.18-164.el5xen ro root=/dev/VolGroup00/Lvroot
module /initrd-2.6.18-164.el5xen.img
title CentOS (2.6.18-164.11.1.el5xen)
    root (hd0,0)
    kernel /xen.gz-3.4.2
module /vmlinuz-2.6.18-164.11.1.el5xen ro root=/dev/VolGroup00/Lvroot
module /initrd-2.6.18-164.11.1.el5xen.img



On Tue, Mar 2, 2010 at 5:17 AM, Matthew Law <matt@xxxxxxxxxxxxxxxxxx> wrote:

You often see this error after doing a 'yum update' or equivalent.  Check
that the reference to the xen bits in your grub config is pointing to the
correct version and number you expect.

HTH,

Matt.

On Tue, March 2, 2010 10:11 am, Ian Tobin wrote:
> How have you built your OS? Is this the first build?
>
>
>
> Ian
>
>
>
>
>
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Alaa eldin
> Sent: 02 March 2010 10:03
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] xen won't start
>
>
>
> Hello,
> when i try to start the xen and write
> xm list
> the result
> Error: Unable to connect to xend: No such file or directory. Is xend
> running?
> and this
> /var/log/xen/xend.log
> [2010-03-02 05:00:00 3485] INFO (SrvDaemon:227) Xend stopped due to
> signal 15.
> [2010-03-02 05:00:00 3743] INFO (SrvDaemon:332) Xend Daemon started
> [2010-03-02 05:00:00 3743] INFO (SrvDaemon:336) Xend changeset:
> unavailable.
> [2010-03-02 05:00:00 3743] ERROR (SrvDaemon:349) Exception starting xend
> ((13, 'Permission denied'))
> Traceback (most recent call last):
>   File
> "/usr/lib64/python2.4/site-packages/xen/xend/server/SrvDaemon.py", line
> 341, in run
>     servers = SrvServer.create()
>   File
> "/usr/lib64/python2.4/site-packages/xen/xend/server/SrvServer.py", line
> 251, in create
>     root.putChild('xend', SrvRoot())
>   File "/usr/lib64/python2.4/site-packages/xen/xend/server/SrvRoot.py",
> line 40, in __init__
>     self.get(name)
>   File "/usr/lib64/python2.4/site-packages/xen/web/SrvDir.py", line 84,
> in get
>     val = val.getobj()
>   File "/usr/lib64/python2.4/site-packages/xen/web/SrvDir.py", line 52,
> in getobj
>     self.obj = klassobj()
>   File "/usr/lib64/python2.4/site-packages/xen/xend/server/SrvNode.py",
> line 30, in __init__
>     self.xn = XendNode.instance()
>   File "/usr/lib64/python2.4/site-packages/xen/xend/XendNode.py", line
> 948, in instance
>     inst = XendNode()
>   File "/usr/lib64/python2.4/site-packages/xen/xend/XendNode.py","Ian
Tobin" <itobin@xxxxxxxxxxxxx> line
> 91, in __init__
>     self.other_config["xen_pagesize"] =
> self.xeninfo_dict()["xen_pagesize"]
>   File "/usr/lib64/python2.4/site-packages/xen/xend/XendNode.py", line
> 937, in xeninfo_dict
>     return dict(self.xeninfo())
>   File "/usr/lib64/python2.4/site-packages/xen/xend/XendNode.py", line
> 881, in xeninfo
>     info['xen_scheduler'] = self.xenschedinfo()
>   File "/usr/lib64/python2.4/site-packages/xen/xend/XendNode.py", line
> 871, in xenschedinfo
>     sched_id = self.xc.sched_id_get()
> Error: (13, 'Permission denied')
>
> OS : centos 5.4
> xen version : 3.4.2



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