The 64 bit xen host kernel are unstable (timer/scheduling issue?)
So I wonder if this is supported or not. Another Fedora 8 x86_64 installation on an Intel Core 2 Duo seems to run flawlessly, except it is running on a laptop, and not meant for server use.
Attached are smolt output.
I would be grateful for any input, this was meant to be a system where multiple services should run (several 64bit F8's) serving dns, web and mail, and replace at least two current lumps of hardware..
regards, George
It seems I got little attention with my original post. The f8 64bit image hangs when starting X. Prior to that the visual 'wait' circle keeps running around irregularily at a lot than normal speed.
I observed the same on multi core AMD running RHEL 4, which was cured with RHEL 5. So no I am happy on that multi-core workstation.
But this new server I was trying to set up had definite problems with the -21 xen kernel. It runs flawlessly with the f8 release kernel (-23).
For testing, where should I pull down a newer xen-kernel that would run with a full 64 bit f8 install? I would be happy to be a guinea pig (as long as I can revert) using this system if I could be pointed to repositories and forum where I could contribute..
thanks in advance, George
On Wed, 26 Dec 2007 16:57:32 +0100, George Refseth george.refseth@arxi.no wrote:
The 64 bit xen host kernel are unstable (timer/scheduling issue?)
So I wonder if this is supported or not. Another Fedora 8 x86_64 installation on an Intel Core 2 Duo seems to run flawlessly, except it is running on a laptop, and not meant for server use.
Attached are smolt output.
See original post.
I would be grateful for any input, this was meant to be a system where multiple services should run (several 64bit F8's) serving dns, web and mail, and replace at least two current lumps of hardware..
regards, George
On Wed, Jan 02, 2008 at 04:34:52PM +0100, George Refseth wrote:
It seems I got little attention with my original post. The f8 64bit image hangs when starting X. Prior to that the visual 'wait' circle keeps running around irregularily at a lot than normal speed.
I observed the same on multi core AMD running RHEL 4, which was cured with RHEL 5. So no I am happy on that multi-core workstation.
But this new server I was trying to set up had definite problems with the -21 xen kernel. It runs flawlessly with the f8 release kernel (-23).
For testing, where should I pull down a newer xen-kernel that would run with a full 64 bit f8 install? I would be happy to be a guinea pig (as long as I can revert) using this system if I could be pointed to repositories and forum where I could contribute..
I'm afraid the 2.6.21 series of kernel-xen will be the newest we release for F-8 and earlier - its in bugfix only mode[1]. If there is an easy bugfix we can do for 2.6.21 to make it work that's a possiblity but we won't be doing .22 or .23 kernel-xen. I'd recommend filing a BZ ticket with as many details of the problem you are seeing as possible:
Regards, Dan.
[1] This is because in Fedora-9 we are radically changing the way we approach Xen kernels http://fedoraproject.org/wiki/Features/XenPvops
On Wed, 02 Jan 2008 16:39:55 +0100, Daniel P. Berrange berrange@redhat.com wrote:
On Wed, Jan 02, 2008 at 04:34:52PM +0100, George Refseth wrote:
It seems I got little attention with my original post. The f8 64bit image hangs when starting X. Prior to that the visual 'wait' circle keeps running around irregularily at a lot than normal speed.
I observed the same on multi core AMD running RHEL 4, which was cured with RHEL 5. So no I am happy on that multi-core workstation.
But this new server I was trying to set up had definite problems with the -21 xen kernel. It runs flawlessly with the f8 release kernel (-23).
For testing, where should I pull down a newer xen-kernel that would run with a full 64 bit f8 install? I would be happy to be a guinea pig (as long as I can revert) using this system if I could be pointed to repositories and forum where I could contribute..
I'm afraid the 2.6.21 series of kernel-xen will be the newest we release for F-8 and earlier - its in bugfix only mode[1]. If there is an easy bugfix we can do for 2.6.21 to make it work that's a possiblity but we won't be doing .22 or .23 kernel-xen. I'd recommend filing a BZ ticket with as many details of the problem you are seeing as possible:
Thanks for a quick response, even if it doesn't really help me. The system also won't boot in i386 mode with the latest BIOS, so I will run non-virtualized 64 bit for testing purposes until you have a testable xen enabled kernel for -25 (?) available and forgo the bug report.
Thanks again, George
Regards, Dan.
[1] This is because in Fedora-9 we are radically changing the way we approach Xen kernels http://fedoraproject.org/wiki/Features/XenPvops
George Refseth wrote:
On Wed, 02 Jan 2008 16:39:55 +0100, Daniel P. Berrange
I'm afraid the 2.6.21 series of kernel-xen will be the newest we release for F-8 and earlier - its in bugfix only mode[1]. If there is an easy bugfix we can do for 2.6.21 to make it work that's a possiblity but we won't be doing .22 or .23 kernel-xen. I'd recommend filing a BZ ticket with as many details of the problem you are seeing as possible:
Thanks for a quick response, even if it doesn't really help me. The system also won't boot in i386 mode with the latest BIOS, so I will run non-virtualized 64 bit for testing purposes until you have a testable xen enabled kernel for -25 (?) available and forgo the bug report.
You could always try kvm.
George Refseth wrote:
The 64 bit xen host kernel are unstable (timer/scheduling issue?)
So I wonder if this is supported or not. Another Fedora 8 x86_64 installation on an Intel Core 2 Duo seems to run flawlessly, except it is running on a laptop, and not meant for server use.
FWIW: I'm running F8 64-bit 2.6.21-2952, for both Dom0 and one DomU, on 6600/Core 2 Duo, without problems. The DomU is HVM; it was originally PV but I gave up on that for complex reasons. Various other (non-Fedora) HVM domU's also work without problems.
Maybe it's just an issue with quad core. Can you turn off two cores in the BIOS?
Evan
I am not running F8, all of my DomUs are HVM, and I am not running 64-bit OSes on any of them, so I was staying out of this one, but I am running F7 64-bit with Xen kernel 2.6.21-6 on a Core 2 Quad, and since you are having problems even with 32-bit PV guests, I thought that this might be useful information. Perhaps you have some sort of BIOS configuration issue or something. Dustin
-----Original Message----- From: fedora-xen-bounces@redhat.com [mailto:fedora-xen-bounces@redhat.com] On Behalf Of Evan Lavelle Sent: Wednesday, January 02, 2008 12:53 To: George Refseth Cc: fedora-xen@redhat.com Subject: Re: [Fedora-xen] Are 64bit Intel Core 2 Quad fedora 8 supported?
George Refseth wrote:
The 64 bit xen host kernel are unstable (timer/scheduling issue?)
So I wonder if this is supported or not. Another Fedora 8 x86_64 installation on an Intel Core 2 Duo seems to run flawlessly, except it is running on a laptop, and not meant for server use.
FWIW: I'm running F8 64-bit 2.6.21-2952, for both Dom0 and one DomU, on 6600/Core 2 Duo, without problems. The DomU is HVM; it was originally PV but I gave up on that for complex reasons. Various other (non-Fedora) HVM domU's also work without problems.
Maybe it's just an issue with quad core. Can you turn off two cores in the BIOS?
Evan
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On Wed, 02 Jan 2008 18:52:31 +0100, Evan Lavelle sa212+fcxen@cyconix.com wrote:
George Refseth wrote:
The 64 bit xen host kernel are unstable (timer/scheduling issue?) So I wonder if this is supported or not. Another Fedora 8 x86_64 installation on an Intel Core 2 Duo seems to run flawlessly, except it is running on a laptop, and not meant for server use.
FWIW: I'm running F8 64-bit 2.6.21-2952, for both Dom0 and one DomU, on 6600/Core 2 Duo, without problems. The DomU is HVM; it was originally PV but I gave up on that for complex reasons. Various other (non-Fedora) HVM domU's also work without problems.
Maybe it's just an issue with quad core.
Seems to be, or the motherboard and BIOS state at time of boot, except that I expected the OS to take over not expect any state of the BIOS. I also have no problem running a a new ASUS C90S Laptop with Core 2 Duo, both i386 and x86, both xen variant (.21-) and non-xen the released and the updated kernels (.23.1-42 & 23.9-85). I will continue experimenting on the laptop to prepare for virt. on the server when it can support mother-board and cpu.
Can you turn off two cores in the BIOS?
Not that I can figure out, the BIOS seems to expect the OS to take charge.
George
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