Hi,
I am just rebuilding my Xen box (CentOS 5.5), and I thought it would be good
idea to install Xen 4.0.1 (from Gitco), instead of 3.4.3 which is what I used to
use.
I can''t seem to create hardware guests. PV guests are okay. Whilst
researching
the issue, I noticed this (see below) in xm dmesg.... I found a bug report, but
it doesn''t say if there is a work-around
(XEN) AMD-Vi: IOMMU not found! (XEN) I/O virtualisation disabled
Is this the lifely cause of my issue.
Thanks in advance,
Ian
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Fajar A. Nugraha
2010-Oct-03 04:37 UTC
Re: [Xen-users] Can''t create HVM guest using 4.0.1
On Sun, Oct 3, 2010 at 8:58 AM, Ian Murray <murrayie@yahoo.co.uk> wrote:> Hi, > > I am just rebuilding my Xen box (CentOS 5.5), and I thought it would be > good idea to install Xen 4.0.1 (from Gitco), instead of 3.4.3 which is what > I used to use. > > I can''t seem to create hardware guests. >... and the error message is ...? /var/log/xen/xend.log is usually a good place to start looking.> PV guests are okay. Whilst researching the issue, I noticed this (see > below) in xm dmesg.... I found a bug report, but it doesn''t say if there is > a work-around > > (XEN) AMD-Vi: IOMMU not found! > (XEN) I/O virtualisation disabled > > Is this the lifely cause of my issue. > >It shouldn''t be the cause. However some user have problem using Xen 4.0.1 with the stock RHEL/Centos kernel-xen, while some others reported it works just fine. I''d actually recommend you stick with Xen 3.4.3 for now. Personally, I have RHEL5 a devel box with Xen 4.0, but with custom kernel compiled (using patches from http://code.google.com/p/gentoo-xen-kernel/) -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi, Thanks for the response. Sorry, it was late last night and I should have included more detail.>... and the error message is ...? > /var/log/xen/xend.log is usually a good place to start looking.Error: (12, ''Cannot allocate memory'') [2010-10-03 02:37:11 3749] ERROR (XendDomainInfo:483) VM start failed Traceback (most recent call last): File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 468, in start XendTask.log_progress(0, 30, self._constructDomain) File "/usr/lib64/python2.4/site-packages/xen/xend/XendTask.py", line 209, in log_progress retval = func(*args, **kwds) File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 2562, in _constructDomain raise VmError(failmsg) VmError: Creating domain failed: name=win [2010-10-03 02:37:11 3749] ERROR (XendDomainInfo:106) Domain construction failed> It shouldn''t be the cause. > However some user have problem using Xen 4.0.1 with the stock RHEL/Centos > kernel-xen, while some others reported it works just fine. I''d actually > recommend you stick with Xen 3.4.3 for now. Personally, I have RHEL5 a devel >box >> with Xen 4.0, but with custom kernel compiled (using patches > from http://code.google.com/p/gentoo-xen-kernel/)Oddly enough, it started working after a reboot. I had rebooted several times already and the only difference I can see was that RAID device that the vm''s LV was sat on was rebuilding last night. Anyway, I will keep an eye on it and if I have any more problems, I will try a new kernel or downgrade to Xen 3.4.3. Thanks again, Ian. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users