Re: kvm problems on new hardware
On 10/29/2009 08:37 PM, Danny ter Haar wrote: Update: I compiled/installed 2.6.32-rc5-git3 on this machine I manually start kvm: vhost1:~# kvm -m 512 -cdrom /vz/template/iso/debian-503-amd64-netinst.iso The bootscreen comes up, i hit enter to install and i get these messages (copied from dmesg) handle_exception: unexpected, vectoring info 0x8010 intr info 0x8b0d handle_exception: unexpected, vectoring info 0x800d intr info 0x8b0d [this line is repeated many times: dmesg |grep 0x8b0d | wc -l 570 ] and finally before ending the kvm session i get: vmx_handle_exit: unexpected, valid vectoring info (0x800d) and exit reason is 0x8021 Can somebody make a slightly related guess what this means ? Can't guess, so a debugging patch. Please install a kvm.git kernel and qemu.git qemu, both from the simultaenous-exceptions branch. kvm.git is very similar to 2.5.32-rc5, except for kvm changes. Please enable ftrace in the kernel. For starters, run your guest; instead of dmesg errors it should print something on stderr and freeze. Please report those messages, as well as the output of the following monitor commands: (qemu) info registers (qemu) x/30i $eip-20 You can find kvm.git and qemu-kvm.git in git://git.kernel.org/pub/scm/virt/kvm/kvm.git git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git remember, the simultaneous-exceptions branch, or we don't get any output. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm problems on new hardware
On Fri, 2009-10-30 at 09:10 +0100, Chris Lalancette wrote: > Can either you or Danny: > > 1) Get the output from stderr of qemu when this happens? I believe qemu > dumps > the state of all of the guest fields when it's going to crash like this, and > that can tell us if the GUEST_STATE is wrong. Any pointer how to produce/where to find the dump ? > 2) Try the patch posted here: http://lkml.org/lkml/2009/10/28/201, and see if > it helps? > [oneliner patch manually applied] vhost1:/usr/src/linux-2.6.32-rc5-git4# time make-kpkg kernel-image --initrd [SNIP] dpkg-deb: building package `linux-image-2.6.32-rc5-git4' in `../linux-image-2.6.32-rc5-git4_2.6.32-rc5-git4-10.00.Custom_amd64.deb'. make[2]: Leaving directory `/usr/src/linux-2.6.32-rc5-git4' make[1]: Leaving directory `/usr/src/linux-2.6.32-rc5-git4' real4m50.866s user30m3.549s sys 2m41.270s [REBOOT] vhost1:~# kvm -m 512 -cdrom /vz/template/iso/debian-503-amd64-netinst.iso -cpu pentium3 Segmentation fault vhost1:~# dmesg| tail handle_exception: unexpected, vectoring info 0x800d intr info 0x8b0d handle_exception: unexpected, vectoring info 0x800d intr info 0x8b0d handle_exception: unexpected, vectoring info 0x800d intr info 0x8b0d handle_exception: unexpected, vectoring info 0x800d intr info 0x8b0d handle_exception: unexpected, vectoring info 0x800d intr info 0x8b0d handle_exception: unexpected, vectoring info 0x800d intr info 0x8b0d handle_exception: unexpected, vectoring info 0x800d intr info 0x8b0d handle_exception: unexpected, vectoring info 0x800d intr info 0x8b0d vmx_handle_exit: unexpected, valid vectoring info (0x800d) and exit reason is 0x8021 kvm[5138]: segfault at c ip 004674ac sp 41cebfd0 error 4 in kvm[40+21b000] In my case it doesn't seem to help. I straced the process in case that should provide some more help: http://dth.net/supermicro/strace_2.6.32-rc5-git4_p3_cpu Thanks for the feedback! -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm problems on new hardware
Ryan Harper wrote: > * Danny ter Haar [2009-10-29 13:38]: >> Update: >> I compiled/installed 2.6.32-rc5-git3 on this machine >> >> I manually start kvm: >> >> vhost1:~# kvm -m 512 -cdrom /vz/template/iso/debian-503-amd64-netinst.iso >> >> The bootscreen comes up, i hit enter to install and i get these messages >> (copied from dmesg) >> >> handle_exception: unexpected, vectoring info 0x8010 intr info 0x8b0d >> handle_exception: unexpected, vectoring info 0x800d intr info 0x8b0d >> [this line is repeated many times: >> dmesg |grep 0x8b0d | wc -l >> 570 ] >> and finally before ending the kvm session i get: >> vmx_handle_exit: unexpected, valid vectoring info (0x800d) and exit >> reason is 0x8021 > > I've seen that in a couple places. I don't think we have root cause, > but in at least one situation (running win2k3 with > 4G of ram) the > work around was to use: Actually, I'm not 100% sure, but I might have root-caused this. At least, the exit reason is the same exit reason I fixed. That exit reason essentially means "vmenter failed because of invalid guest fields". In the case I tracked down, it was because we were wrongly sign-extending the segment fields (instead of zero-extending them). Can either you or Danny: 1) Get the output from stderr of qemu when this happens? I believe qemu dumps the state of all of the guest fields when it's going to crash like this, and that can tell us if the GUEST_STATE is wrong. 2) Try the patch posted here: http://lkml.org/lkml/2009/10/28/201, and see if it helps? -- Chris Lalancette -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm problems on new hardware
On Thu, 2009-10-29 at 17:07 -0500, Ryan Harper wrote: > I've seen that in a couple places. I don't think we have root cause, > but in at least one situation (running win2k3 with > 4G of ram) the > work around was to use: > >-cpu pentium3 Thanks for your response. When i add this option it segv's on bootup, it doesn't even make it to the bootscreen of debian: vhost1:~# kvm -m 512 -cdrom /vz/template/iso/debian-503-amd64-netinst.iso -cpu pentium3 kvm[4829]: segfault at c ip 004674ac sp 42323fd0 error 4 in kvm[40+21b000] Does this provide more hints where to look ? -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm problems on new hardware
* Danny ter Haar [2009-10-29 13:38]: > Update: > I compiled/installed 2.6.32-rc5-git3 on this machine > > I manually start kvm: > > vhost1:~# kvm -m 512 -cdrom /vz/template/iso/debian-503-amd64-netinst.iso > > The bootscreen comes up, i hit enter to install and i get these messages > (copied from dmesg) > > handle_exception: unexpected, vectoring info 0x8010 intr info 0x8b0d > handle_exception: unexpected, vectoring info 0x800d intr info 0x8b0d > [this line is repeated many times: > dmesg |grep 0x8b0d | wc -l > 570 ] > and finally before ending the kvm session i get: > vmx_handle_exit: unexpected, valid vectoring info (0x800d) and exit > reason is 0x8021 I've seen that in a couple places. I don't think we have root cause, but in at least one situation (running win2k3 with > 4G of ram) the work around was to use: -cpu pentium3 This relates to what cpu features are exported in the virtual processor, so if this helps it's masking the real issue, but hopefully can help narrow down what we have to look at. -- Ryan Harper Software Engineer; Linux Technology Center IBM Corp., Austin, Tx ry...@us.ibm.com -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm problems on new hardware
Update: I compiled/installed 2.6.32-rc5-git3 on this machine I manually start kvm: vhost1:~# kvm -m 512 -cdrom /vz/template/iso/debian-503-amd64-netinst.iso The bootscreen comes up, i hit enter to install and i get these messages (copied from dmesg) handle_exception: unexpected, vectoring info 0x8010 intr info 0x8b0d handle_exception: unexpected, vectoring info 0x800d intr info 0x8b0d [this line is repeated many times: dmesg |grep 0x8b0d | wc -l 570 ] and finally before ending the kvm session i get: vmx_handle_exit: unexpected, valid vectoring info (0x800d) and exit reason is 0x8021 Can somebody make a slightly related guess what this means ? Bad hardware ? cpu ? mem ? Bueller, anyone ? -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm problems on new hardware
On Tue, 2009-10-27 at 12:34 +0200, Avi Kivity wrote: > I'm not able to reproduce this on a similar processor. Can you post > your qemu command line? vhost1:/var/tmp# ps axuw |grep kvm root 5843 42.7 0.0 621048 13560 ?Sl 11:35 0:06 /usr/bin/kvm -monitor unix:/var/run/qemu-server/105.mon,server,nowait -vnc unix:/var/run/qemu-server/105.vnc,password -pidfile /var/run/qemu-server/105.pid -daemonize -usbdevice tablet -name win7 -smp sockets=1,cores=1 -vga cirrus -tdf -localtime -rtc-td-hack -k en-us -drive file=/var/lib/vz/images/105/vm-105-disk-1.raw,if=ide,index=0,boot=on -drive file=/var/lib/vz/template/iso/windows7.iso,if=ide,index=2,media=cdrom -m 512 -net tap,vlan=0,ifname=vmtab105i0,script=/var/lib/qemu-server/bridge-vlan -net nic,vlan=0,model=e1000,macaddr=BA:29:E3:CC:95:F6 -id 105 -cpuunits 1000 vhost1:/etc/qemu-server# cat 105.conf name: win7 ide2: local:iso/windows.iso,media=cdrom vlan0: e1000=BA:29:E3:CC:95:F6 bootdisk: ide0 ostype: w2k8 ide0: local:105/vm-105-disk-1.raw memory: 512 sockets: 1 I started the debian install again, attached a strace and then hit enter in the vnc screen. The output of the strace can be found here: http://dth.net/supermicro/strace_debian_install Don't know if it helps, _i_ don't know what i'm looking at ;-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm problems on new hardware
On 10/27/2009 12:27 PM, Danny ter Haar wrote: On Tue, 2009-10-27 at 11:45 +0200, Avi Kivity wrote: Does this happen for all guests (different OSes), or just this one? I just tried a windows7 cd image Same error: vmbr0: port 2(vmtab105i0) entering learning state vmbr0: topology change detected, propagating vmbr0: port 2(vmtab105i0) entering forwarding state handle_exception: unexpected, vectoring info 0x8410 intr info 0x8b0d I'm not able to reproduce this on a similar processor. Can you post your qemu command line? -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm problems on new hardware
On Tue, 2009-10-27 at 11:45 +0200, Avi Kivity wrote: > Does this happen for all guests (different OSes), or just this one? I just tried a windows7 cd image Same error: vmbr0: port 2(vmtab105i0) entering learning state vmbr0: topology change detected, propagating vmbr0: port 2(vmtab105i0) entering forwarding state handle_exception: unexpected, vectoring info 0x8410 intr info 0x8b0d I am thinking it's either a bios setting (i tried (afaik) all possible combinations). I even have a not-yet-released version of the bios. All still won't let me use virtualization. Could it be i have faulty cpu's ? Is there a way to debug what happens when ik start the kvm guest process ? -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm problems on new hardware
On Tue, 2009-10-27 at 11:45 +0200, Avi Kivity wrote: > Does this happen for all guests (different OSes), or just this one? I tried an iso of both X86_64 and i386 of debian. I even burned the iso image to a real cd to try if it would boot (it did) Then i tried a rescuecd image: same behaviour. > Please provide a link to the install media. It's really a standard cd image i got from http://cdimage.debian.org/debian-cd/5.0.3/amd64/iso-cd/debian-503-amd64-netinst.iso I opened a question at the proxmox forum (first): http://www.proxmox.com/forum/showthread.php?t=2384 I just followed up with this posting: http://www.proxmox.com/forum/showthread.php?p=13192#post13192 which may give more detailed/useful information. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm problems on new hardware
On 10/26/2009 12:06 PM, Danny ter Haar wrote: Hello, I have a KVM virtualization problem. I've put together new hardware (supermicro) server with 2 E5530 cpu's and memory& disk to start experimenting with virtualization. I intend to use the www.proxmox.com system/setup. I installed proxmox and started stress testing the hardware: parallel kernel compiles in a loop (concurrency_level=32)& memtest86+ during the night etc. The hardware/os performs rocksolid when i stress test it, but the moment i start a virtual guest (eg debian netinstall) i get the first screen of the installation procedure in a vnc screen. I choose either normal install or expert install , the guest screen goes blank with only a cursor and the kvm process prints an error on the console and starts to eat cpu cycles. So the host OS is not barfing, only the kvm process is giving problems and the guest is frozen. Does this happen for all guests (different OSes), or just this one? Please provide a link to the install media. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
