Hi, the only problem I could imagine is that there is really some directory missing, but you said it is there. Fromt his point I see two things you can try: 1) run libvirt with debugging output enabled [1] 2) try to create the directories manually Hopefully it'll give us more information on what's wrong. Martin On 07/03/2012 11:55 AM, xuejie chen wrote: > Hi everyone, > > I created a Desktop VM1 with all default settings and added a 2G Disk > to the VM1 in WebAdmin. > But when I run the vm, it returns failure with the follow error > message in WebAdmin. > "VM VM1 is down. Exit message: Unable to create cgroup for VM1" > > My DateCenter contains one host(with OS is CentOS 6, VDSM version is > 4.9.6 and libvirt version is 0.9.4) and one NFS domain. > And The cgroup Directory have already exits on the host. > But why cannot I run the VM1? > > There are some error message in VDSM log > -------- > File "/usr/lib64/python2.6/site-packages/libvirt.py", line 2087, in createXML > if ret is None: raise libvirtError('virDomainCreateXML() failed', conn=self) > libvirtError: Unable to create cgroup for VM1: No such file or directory > ---------- > > There are some error message in libvirt log > --------- > error : virNetClientProgramDispatchError:170 : Unable to create cgroup > for VM1: No such file or directory" > --------- > > There are log files in attachment > > > Best wishes, > Xuejie Chen > > > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users

----- Original Message ----- > From: "Martin Kletzander" <mkletzan(a)redhat.com&gt; > To: "xuejie chen" <xuejiechen52(a)gmail.com&gt; > Cc: users(a)ovirt.org > Sent: Wednesday, July 4, 2012 4:12:07 AM > Subject: Re: [Users] Unable to run VM with "Unable to create cgroup" error message > > Hi, > > the only problem I could imagine is that there is really some > directory > missing, but you said it is there. Fromt his point I see two things > you > can try: > 1) run libvirt with debugging output enabled [1] > 2) try to create the directories manually Is the cgroupfs mounted?

Hi, 2012/7/4 Martin Kletzander <mkletzan(a)redhat.com&gt;: > On 07/04/2012 02:36 PM, Andrew Cathrow wrote: >> >> >> ----- Original Message ----- >>> From: "Martin Kletzander" <mkletzan(a)redhat.com&gt; >>> To: "xuejie chen" <xuejiechen52(a)gmail.com&gt; >>> Cc: users(a)ovirt.org >>> Sent: Wednesday, July 4, 2012 4:12:07 AM >>> Subject: Re: [Users] Unable to run VM with "Unable to create cgroup" error message >>> >>> Hi, >>> >>> the only problem I could imagine is that there is really some >>> directory >>> missing, but you said it is there. Fromt his point I see two things >>> you >>> can try: >>> 1) run libvirt with debugging output enabled [1] >>> 2) try to create the directories manually >> >> Is the cgroupfs mounted? >> > > I checked and libvirt should complain if it is not mounted. But to be > sure, is it? I do not know how to check it. where the cgroupfs should be mounted to?

2012/7/5 xuejie chen&lt;xuejiechen52(a)gmail.com&gt;: > Hi, > > > 2012/7/4 Martin Kletzander&lt;mkletzan(a)redhat.com&gt;: >> On 07/04/2012 02:36 PM, Andrew Cathrow wrote: >>> >>> ----- Original Message ----- >>>> From: "Martin Kletzander&quot;&lt;mkletzan(a)redhat.com&gt; >>>> To: "xuejie chen&quot;&lt;xuejiechen52(a)gmail.com&gt; >>>> Cc: users(a)ovirt.org >>>> Sent: Wednesday, July 4, 2012 4:12:07 AM >>>> Subject: Re: [Users] Unable to run VM with "Unable to create cgroup" error message >>>> >>>> Hi, >>>> >>>> the only problem I could imagine is that there is really some >>>> directory >>>> missing, but you said it is there. Fromt his point I see two things >>>> you >>>> can try: >>>> 1) run libvirt with debugging output enabled [1] >>>> 2) try to create the directories manually >>> Is the cgroupfs mounted? >>> >> I checked and libvirt should complain if it is not mounted. But to be >> sure, is it? > I do not know how to check it. > where the cgroupfs should be mounted to? >

I have confirmed the cgroupfs did not mounted.

Thanks a lot. xuejie chen. _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users