Pasi Kärkkäinen
2009-Aug-18 22:34 UTC
[Fedora-xen] Fedora 11 Xen domU grub.conf timeout=0 problem with pygrub
Hello,
I just installed Fedora 11 Xen PV domU on Fedora 11 Xen dom0, using virt-install
like this:
virt-install -n testvm -r 512 --vcpus=1 -f /dev/vg_dom0test/testvm --vnc -p
-l
"ftp://ftp.funet.fi/pub/mirrors/fedora.redhat.com/pub/fedora/linux/releases/11/Fedora/i386/os"
Installation goes fine, but after the installation is complete, and the domU
gets rebooted, it will never come up again. I tried multiple times, and
it''s
always the same. Installation starts and works fine, but after installation domU
doesn''t start anymore - not even after "xm destroy" and
"xm start".
I started investigating the problem, and from "xm log" I noticed the
last
line of output is about starting pygrub and nothing after that.
I checked "ps aux" and noticed pygrub is there, waiting for something.
"strace -p" shows it''s waiting for something, and checking
the status all the time.
I tried running the same pygrub command from cmdline, and noticed I have to
press enter before the kernel gets chosen by pygrub. After pressing enter pygrub
copies the kernel/initrd/configuration and exists OK.
I echoed the config from manual pygrub run to /var/run/xend/boot/xenbl.pid file,
killed pygrub, and after that the after-installation-reboot continued normally..
When the domU got up I checked grub.conf from it:
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/mapper/vg_f11domu-lv_root
# initrd /initrd-version.img
#boot=/dev/xvda
default=0
timeout=0
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.29.4-167.fc11.i686.PAE)
root (hd0,0)
kernel /vmlinuz-2.6.29.4-167.fc11.i686.PAE ro
root=/dev/mapper/vg_f11domu-lv_root rhgb quiet
initrd /initrd-2.6.29.4-167.fc11.i686.PAE.img
timeout=0 looks suspicious.. so I changed it to 5.
After that domU comes up OK on its own..
I changed timeout back to 0, and pygrub gets stuck again.
Is this a bug of pygrub, or a broken default grub.conf timeout value of F11?
-- Pasi
Mark McLoughlin
2009-Aug-19 10:09 UTC
Re: [Fedora-xen] Fedora 11 Xen domU grub.conf timeout=0 problem with pygrub
On Wed, 2009-08-19 at 01:34 +0300, Pasi Kärkkäinen wrote:> #boot=/dev/xvda > default=0 > timeout=0 > splashimage=(hd0,0)/grub/splash.xpm.gz > hiddenmenu > title Fedora (2.6.29.4-167.fc11.i686.PAE) > root (hd0,0) > kernel /vmlinuz-2.6.29.4-167.fc11.i686.PAE ro > root=/dev/mapper/vg_f11domu-lv_root rhgb quiet > initrd /initrd-2.6.29.4-167.fc11.i686.PAE.img > > > timeout=0 looks suspicious.. so I changed it to 5. > After that domU comes up OK on its own.. > > I changed timeout back to 0, and pygrub gets stuck again. > > Is this a bug of pygrub, or a broken default grub.conf timeout value of F11?timeout=0 should be fine, it sounds like a pygrub bug Cheers, Mark.
Pasi Kärkkäinen
2009-Aug-19 15:30 UTC
Re: [Fedora-xen] Fedora 11 Xen domU grub.conf timeout=0 problem with pygrub
On Wed, Aug 19, 2009 at 10:09:15AM +0000, Mark McLoughlin wrote:> On Wed, 2009-08-19 at 01:34 +0300, Pasi Kärkkäinen wrote: > > > #boot=/dev/xvda > > default=0 > > timeout=0 > > splashimage=(hd0,0)/grub/splash.xpm.gz > > hiddenmenu > > title Fedora (2.6.29.4-167.fc11.i686.PAE) > > root (hd0,0) > > kernel /vmlinuz-2.6.29.4-167.fc11.i686.PAE ro > > root=/dev/mapper/vg_f11domu-lv_root rhgb quiet > > initrd /initrd-2.6.29.4-167.fc11.i686.PAE.img > > > > > > timeout=0 looks suspicious.. so I changed it to 5. > > After that domU comes up OK on its own.. > > > > I changed timeout back to 0, and pygrub gets stuck again. > > > > Is this a bug of pygrub, or a broken default grub.conf timeout value of F11? > > timeout=0 should be fine, it sounds like a pygrub bug >Indeed. RHEL5.3 version of pygrub seems to work with F11 domU, but the upstream Xen 3.4.1 pygrub doesn''t. The version numbers are the same (both are 0.6). I''ll make a diff and try to figure out the fix for this.. Are you guys planning to post the RHEL5 pygrub fixes upstream? -- Pasi
Pasi Kärkkäinen
2009-Aug-19 16:46 UTC
Re: [Fedora-xen] Fedora 11 Xen domU grub.conf timeout=0 problem with pygrub / patch
On Wed, Aug 19, 2009 at 06:30:06PM +0300, Pasi Kärkkäinen wrote:> On Wed, Aug 19, 2009 at 10:09:15AM +0000, Mark McLoughlin wrote: > > On Wed, 2009-08-19 at 01:34 +0300, Pasi Kärkkäinen wrote: > > > > > #boot=/dev/xvda > > > default=0 > > > timeout=0 > > > splashimage=(hd0,0)/grub/splash.xpm.gz > > > hiddenmenu > > > title Fedora (2.6.29.4-167.fc11.i686.PAE) > > > root (hd0,0) > > > kernel /vmlinuz-2.6.29.4-167.fc11.i686.PAE ro > > > root=/dev/mapper/vg_f11domu-lv_root rhgb quiet > > > initrd /initrd-2.6.29.4-167.fc11.i686.PAE.img > > > > > > > > > timeout=0 looks suspicious.. so I changed it to 5. > > > After that domU comes up OK on its own.. > > > > > > I changed timeout back to 0, and pygrub gets stuck again. > > > > > > Is this a bug of pygrub, or a broken default grub.conf timeout value of F11? > > > > timeout=0 should be fine, it sounds like a pygrub bug > > > > Indeed. > > RHEL5.3 version of pygrub seems to work with F11 domU, but the upstream Xen > 3.4.1 pygrub doesn''t. The version numbers are the same (both are 0.6). > > I''ll make a diff and try to figure out the fix for this.. >Attached is a patch to make upstream Xen 3.4.1 pygrub work with F11 domU grub.conf timeout=0 default setting. Works for me. Change is taken from the RHEL5.3 version of pygrub. -- Pasi> Are you guys planning to post the RHEL5 pygrub fixes upstream? > > -- Pasi > > -- > Fedora-xen mailing list > Fedora-xen@redhat.com > https://www.redhat.com/mailman/listinfo/fedora-xen--wRRV7LY7NUeQGEoC Content-Type: text/x-diff; charset=us-ascii Content-Disposition: attachment; filename="pygrub-fix-zero-timeout.patch" --- pygrub-xen341 2009-08-17 22:22:29.000000000 +0300 +++ pygrub 2009-08-19 18:39:17.000000000 +0300 @@ -447,7 +447,7 @@ # So we may come here even after a key has been pressed. # Check both timeout and mytime to avoid exiting # when we shouldn''t. - if timeout != -1 and mytime >= int(timeout): + if mytime >= int(timeout): self.isdone = True break else: --wRRV7LY7NUeQGEoC--
Pasi Kärkkäinen
2009-Aug-19 17:24 UTC
Re: [Fedora-xen] Fedora 11 Xen domU grub.conf timeout=0 problem with pygrub / patch
On Wed, Aug 19, 2009 at 07:46:26PM +0300, Pasi Kärkkäinen wrote:> On Wed, Aug 19, 2009 at 06:30:06PM +0300, Pasi Kärkkäinen wrote: > > On Wed, Aug 19, 2009 at 10:09:15AM +0000, Mark McLoughlin wrote: > > > On Wed, 2009-08-19 at 01:34 +0300, Pasi Kärkkäinen wrote: > > > > > > > #boot=/dev/xvda > > > > default=0 > > > > timeout=0 > > > > splashimage=(hd0,0)/grub/splash.xpm.gz > > > > hiddenmenu > > > > title Fedora (2.6.29.4-167.fc11.i686.PAE) > > > > root (hd0,0) > > > > kernel /vmlinuz-2.6.29.4-167.fc11.i686.PAE ro > > > > root=/dev/mapper/vg_f11domu-lv_root rhgb quiet > > > > initrd /initrd-2.6.29.4-167.fc11.i686.PAE.img > > > > > > > > > > > > timeout=0 looks suspicious.. so I changed it to 5. > > > > After that domU comes up OK on its own.. > > > > > > > > I changed timeout back to 0, and pygrub gets stuck again. > > > > > > > > Is this a bug of pygrub, or a broken default grub.conf timeout value of F11? > > > > > > timeout=0 should be fine, it sounds like a pygrub bug > > > > > > > Indeed. > > > > RHEL5.3 version of pygrub seems to work with F11 domU, but the upstream Xen > > 3.4.1 pygrub doesn''t. The version numbers are the same (both are 0.6). > > > > I''ll make a diff and try to figure out the fix for this.. > > > > Attached is a patch to make upstream Xen 3.4.1 pygrub work with F11 domU grub.conf timeout=0 > default setting. Works for me. Change is taken from the RHEL5.3 version of pygrub. >I just noticed that with the default version of pygrub of Xen 3.4.1 you need to go to "xm console <f11domU>" to choose the kernel, and after that it boots up normally.. The patch I sent takes care of auto-selecting the kernel when timeout=0. -- Pasi> > > Are you guys planning to post the RHEL5 pygrub fixes upstream? > > > > -- Pasi > > > > -- > > Fedora-xen mailing list > > Fedora-xen@redhat.com > > https://www.redhat.com/mailman/listinfo/fedora-xen> --- pygrub-xen341 2009-08-17 22:22:29.000000000 +0300 > +++ pygrub 2009-08-19 18:39:17.000000000 +0300 > @@ -447,7 +447,7 @@ > # So we may come here even after a key has been pressed. > # Check both timeout and mytime to avoid exiting > # when we shouldn''t. > - if timeout != -1 and mytime >= int(timeout): > + if mytime >= int(timeout): > self.isdone = True > break > else:> -- > Fedora-xen mailing list > Fedora-xen@redhat.com > https://www.redhat.com/mailman/listinfo/fedora-xen
Pasi Kärkkäinen
2009-Aug-20 08:15 UTC
Re: [Fedora-xen] Fedora 11 Xen domU grub.conf timeout=0 problem with pygrub / patch
On Wed, Aug 19, 2009 at 08:24:56PM +0300, Pasi Kärkkäinen wrote:> On Wed, Aug 19, 2009 at 07:46:26PM +0300, Pasi Kärkkäinen wrote: > > On Wed, Aug 19, 2009 at 06:30:06PM +0300, Pasi Kärkkäinen wrote: > > > On Wed, Aug 19, 2009 at 10:09:15AM +0000, Mark McLoughlin wrote: > > > > On Wed, 2009-08-19 at 01:34 +0300, Pasi Kärkkäinen wrote: > > > > > > > > > #boot=/dev/xvda > > > > > default=0 > > > > > timeout=0 > > > > > splashimage=(hd0,0)/grub/splash.xpm.gz > > > > > hiddenmenu > > > > > title Fedora (2.6.29.4-167.fc11.i686.PAE) > > > > > root (hd0,0) > > > > > kernel /vmlinuz-2.6.29.4-167.fc11.i686.PAE ro > > > > > root=/dev/mapper/vg_f11domu-lv_root rhgb quiet > > > > > initrd /initrd-2.6.29.4-167.fc11.i686.PAE.img > > > > > > > > > > > > > > > timeout=0 looks suspicious.. so I changed it to 5. > > > > > After that domU comes up OK on its own.. > > > > > > > > > > I changed timeout back to 0, and pygrub gets stuck again. > > > > > > > > > > Is this a bug of pygrub, or a broken default grub.conf timeout value of F11? > > > > > > > > timeout=0 should be fine, it sounds like a pygrub bug > > > > > > > > > > Indeed. > > > > > > RHEL5.3 version of pygrub seems to work with F11 domU, but the upstream Xen > > > 3.4.1 pygrub doesn''t. The version numbers are the same (both are 0.6). > > > > > > I''ll make a diff and try to figure out the fix for this.. > > > > > > > Attached is a patch to make upstream Xen 3.4.1 pygrub work with F11 domU grub.conf timeout=0 > > default setting. Works for me. Change is taken from the RHEL5.3 version of pygrub. > > > > I just noticed that with the default version of pygrub of Xen 3.4.1 you need to > go to "xm console <f11domU>" to choose the kernel, and after that it boots up normally.. > > The patch I sent takes care of auto-selecting the kernel when timeout=0. >This is now fixed in xen-unstable and xen-3.4-testing: http://xenbits.xen.org/staging/xen-unstable.hg?rev/3509276d8ad6 http://xenbits.xen.org/staging/xen-3.4-testing.hg?rev/7a57911ff09e -- Pasi> -- Pasi > > > > > > Are you guys planning to post the RHEL5 pygrub fixes upstream? > > > > > > -- Pasi > > > > > > -- > > > Fedora-xen mailing list > > > Fedora-xen@redhat.com > > > https://www.redhat.com/mailman/listinfo/fedora-xen > > > --- pygrub-xen341 2009-08-17 22:22:29.000000000 +0300 > > +++ pygrub 2009-08-19 18:39:17.000000000 +0300 > > @@ -447,7 +447,7 @@ > > # So we may come here even after a key has been pressed. > > # Check both timeout and mytime to avoid exiting > > # when we shouldn''t. > > - if timeout != -1 and mytime >= int(timeout): > > + if mytime >= int(timeout): > > self.isdone = True > > break > > else: > > > -- > > Fedora-xen mailing list > > Fedora-xen@redhat.com > > https://www.redhat.com/mailman/listinfo/fedora-xen > > -- > Fedora-xen mailing list > Fedora-xen@redhat.com > https://www.redhat.com/mailman/listinfo/fedora-xen