Debian Bug report logs - #591934
pxelinux: incompatible with qemu

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Vagrant Cascadian <vagrant+debianbugs@freegeek.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: qemu-system: PXE boot unstable using etherboot

Date: Fri, 6 Aug 2010 08:26:45 -0700

Package: qemu-system
Version: 0.12.5+dfsg-1
Severity: important

qemu 0.12.x isn't working well with with etherboot, at least for me.

it seems to probe the NIC twice, and on the second time, it seems to at least
partially work, able to load pxelinux over the network. (this aspect of the
problem seems identical to http://bugs.debian.org/585170)

but then, after loading pxelinux, it seems to sometimes hang qemu (screen goes
black, unable to switch to qemu monitor), and if it doesn't, it takes very long
to boot. if it does boot, sometimes the network card stops working, hanging the
root filesystem with nfsroot.

upstream has switched to gPXE, which has not yet been uploaded to debian, as
there are some outstanding licensing issues. http://bugs.debian.org/474034

live well,
  vagrant

Message #10 received at submit@bugs.debian.org (full text, mbox, reply):

From: Michael Tokarev <mjt@tls.msk.ru>

To: Vagrant Cascadian <vagrant+debianbugs@freegeek.org>, 591934@bugs.debian.org

Cc: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: Re: Bug#591934: qemu-system: PXE boot unstable using etherboot

Date: Mon, 09 Aug 2010 11:42:21 +0400

06.08.2010 19:26, Vagrant Cascadian пишет:
> Package: qemu-system
> Version: 0.12.5+dfsg-1
> Severity: important
>
> qemu 0.12.x isn't working well with with etherboot, at least for me.

Ditto for qemu-kvm, see
> it seems to probe the NIC twice, and on the second time, it seems to at least
> partially work, able to load pxelinux over the network. (this aspect of the
> problem seems identical to http://bugs.debian.org/585170)
>
> but then, after loading pxelinux, it seems to sometimes hang qemu (screen goes
> black, unable to switch to qemu monitor), and if it doesn't, it takes very long
> to boot. if it does boot, sometimes the network card stops working, hanging the
> root filesystem with nfsroot.
>
> upstream has switched to gPXE, which has not yet been uploaded to debian, as
> there are some outstanding licensing issues. http://bugs.debian.org/474034
>
> live well,
>    vagrant
>
>
>
> _______________________________________________
> pkg-qemu-devel mailing list
> pkg-qemu-devel@lists.alioth.debian.org
> http://lists.alioth.debian.org/mailman/listinfo/pkg-qemu-devel

Message #20 received at 591934@bugs.debian.org (full text, mbox, reply):

From: Michael Tokarev <mjt@tls.msk.ru>

To: Vagrant Cascadian <vagrant+debianbugs@freegeek.org>, 591934@bugs.debian.org

Subject: Re: Bug#591934: qemu-system: PXE boot unstable using etherboot

Date: Mon, 09 Aug 2010 11:44:07 +0400

06.08.2010 19:26, Vagrant Cascadian wrote:
> Package: qemu-system
> Version: 0.12.5+dfsg-1
> Severity: important
>
> qemu 0.12.x isn't working well with with etherboot, at least for me.

Ditto for qemu-kvm, see #585170 .

I asked on qemu-deve list (and someone CC'd etherboot), but no
answer come from that direction except of switching to discussing
gpxe licensing again...

/mjt

Message #25 received at 591934@bugs.debian.org (full text, mbox, reply):

From: Vagrant Cascadian <vagrant@freegeek.org>

To: 591934@bugs.debian.org

Subject: Re: Bug#591934: qemu-system: PXE boot unstable using etherboot

Date: Fri, 13 Aug 2010 08:28:23 -0700

retitle 591934 pxelinux: incompatible with qemu
clone 591934 -1
reassign -1 syslinux-common
found -1 4.00~pre53+dfsg-1
thanks

On Fri, Aug 06, 2010 at 08:26:45AM -0700, Vagrant Cascadian wrote:
> but then, after loading pxelinux, it seems to sometimes hang qemu (screen goes
> black, unable to switch to qemu monitor), and if it doesn't, it takes very long
> to boot. if it does boot, sometimes the network card stops working, hanging the
> root filesystem with nfsroot.
 
it seems to be an incompatibility with pxelinux from syslinux-common. i tested
versions 2:3.71+dfsg-5 (in lenny) and 3.86+dfsg-5 (from snapshot.debian.org),
which both seemed to work.

the problem seems to have been introduced in syslinux-common 4.00~pre53+dfsg-1.
also tested with 4.00+dfsg-1 and 2:4.02+dfsg-3.

live well,
  vagrant

Message #34 received at 591934@bugs.debian.org (full text, mbox, reply):

From: Vagrant Cascadian <vagrant@freegeek.org>

To: 592875@bugs.debian.org, 591934@bugs.debian.org

Subject: pxelinux: incompatible with qemu

Date: Fri, 13 Aug 2010 09:22:10 -0700

i tried with qemu 0.9.1-10lenny1 and it actually seemed to network boot fine
with pxelinux (except for the default network card, ne2k_pci).

since that version doesn't support kvm, i tried qemu 0.12.x with kvm support
disabled, and that seemed to also work.

so specifically, it appears to be a problem with the interaction of newer
versions (4.x) of syslinux/pxelinux and qemu with kvm support enabled.

wheee.

live well,
  vagrant

Message #39 received at 591934@bugs.debian.org (full text, mbox, reply):

From: Daniel Baumann <daniel@debian.org>

To: Vagrant Cascadian <vagrant@freegeek.org>, 592875@bugs.debian.org

Cc: 591934@bugs.debian.org

Subject: Re: Bug#592875: pxelinux: incompatible with qemu

Date: Sat, 14 Aug 2010 13:45:28 +0200

On 08/13/2010 06:22 PM, Vagrant Cascadian wrote:
> so specifically, it appears to be a problem with the interaction of newer
> versions (4.x) of syslinux/pxelinux and qemu with kvm support enabled.

could you please ask this on syslinux@zytor.com? as you know, i'm away
for the next three weeks and can't handle it myself before that.

-- 
Address:        Daniel Baumann, Burgunderstrasse 3, CH-4562 Biberist
Email:          daniel.baumann@panthera-systems.net
Internet:       http://people.panthera-systems.net/~daniel-baumann/

Message #44 received at 591934@bugs.debian.org (full text, mbox, reply):

From: Vagrant Cascadian <vagrant@freegeek.org>

To: syslinux@zytor.com, qemu-devel@nongnu.org

Cc: 592875@bugs.debian.org, 591934@bugs.debian.org

Subject: Re: Bug#592875: pxelinux: incompatible with qemu with kvm enabled

Date: Tue, 24 Aug 2010 12:15:26 -0700

it seems versions of pxelinux 4.00 and later hangs qemu (0.12.x, 0.13.x) when
network booting using etherboot or gPXE and qemu's kvm support is enabled.

pxelinux 3.86 and earlier do not appear to trigger the problem. i also didn't
experience the problem with qemu-kvm (formerly known as kvm). qemu without kvm
support enabled also seems to work fine.

for more details, please see:

  http://bugs.debian.org/592875
  http://bugs.debian.org/591934

thanks!

live well,
  vagrant

Message #49 received at 591934@bugs.debian.org (full text, mbox, reply):

From: "H. Peter Anvin" <hpa@zytor.com>

To: For discussion of Syslinux and tftp-hpa <syslinux@zytor.com>

Cc: Vagrant Cascadian <vagrant@freegeek.org>, qemu-devel@nongnu.org, 592875@bugs.debian.org, 591934@bugs.debian.org

Subject: Re: [syslinux] Bug#592875: pxelinux: incompatible with qemu with kvm enabled

Date: Tue, 24 Aug 2010 14:41:26 -0700

On 08/24/2010 12:15 PM, Vagrant Cascadian wrote:
> it seems versions of pxelinux 4.00 and later hangs qemu (0.12.x, 0.13.x) when
> network booting using etherboot or gPXE and qemu's kvm support is enabled.
> 
> pxelinux 3.86 and earlier do not appear to trigger the problem. i also didn't
> experience the problem with qemu-kvm (formerly known as kvm). qemu without kvm
> support enabled also seems to work fine.
> 
> for more details, please see:
> 
>   http://bugs.debian.org/592875
>   http://bugs.debian.org/591934
> 

Any way you can do a git bisect on this one?

	-hpa

Message #54 received at 591934-done@bugs.debian.org (full text, mbox, reply):

From: Vagrant Cascadian <vagrant@freegeek.org>

To: 591934-done@bugs.debian.org

Subject: Re: Bug#591934: qemu-system: PXE boot unstable using etherboot

Date: Sat, 19 May 2012 11:34:10 -0700

Version: 1.0.1+dfsg-1

On Fri, Aug 06, 2010 at 08:26:45AM -0700, Vagrant Cascadian wrote:
> qemu 0.12.x isn't working well with with etherboot, at least for me.

for some time now, qemu uses iPXE, and it seems to be working fine.

syslinux also appears to have fixed the problem a while back:

 syslinux (2:4.03+dfsg-7) experimental; urgency=low
 .
   * Adding patch from upstream to fix regression with pxelinux and gpxe
     with qemu, thanks to Gene Cumm <gene.cumm@gmail.com> (Closes:
     #592875).

live well,
  vagrant

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