Pkg xen devel - Jun 2015 - Bug#787229: Bug#787229: xen-hypervisor-4.4-amd64: xl command hangs on Dell R720

Hi,

Thanks for your answer.

During the Debian jessie installation, I had a problem at grub step.
The os-prober part was stuck : grub was at 66 % (os-prober tried to browse
all the VM on LVM partitions)
After more than 15 minutes, os-prober seems to be stuck, so I rebooted the
server.
I had to boot in rescue mode, then, reinstalled grub and modified it to add
"GRUB_DISABLE_OS_PROBER=true".
It seems it solved the problem, I was able to boot the server.

Maybe there are some missing things in my Debian installation ?

Do you want me to fill an other bug report (concerning the installation
problem ?)

I have not this problem with Debian Wheezy installation.

Thanks for your time and for your help.

Benoit






2015-05-30 10:31 GMT+02:00 Ian Campbell <ijc at debian.org>:
> On Sat, 2015-05-30 at 05:23 +0200, Beno?t Tonnerre wrote:
> > mai 29 23:20:50 jango xen[1150]: Starting Xen daemons: xenfs xenstored
> > mai 29 22:20:50 jango xen[1150]: Warning: Fake start-stop-daemon
called,
> doing
> > nothing.
> > mai 29 23:20:50 jango xen[1150]: Warning: Fake start-stop-daemon
called,
> doing
> > nothing.
>
> This suggests that the xen daemons and in particular xenstored are not
> actually running, the result of which will be any command which tries to
> talk to xenstored (like xl list, most xl commands and the xenstore-write
> seen in the status log) will never get an answer and will appear to
> hang.
>
> I don't know what "Fake start-stop-daemon" is, but it sounds
like the
> root of your problems.
>
> Ian.
>
>
>
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I'm afraid I don't know what may or may not have happened to your
installation, just that this fake-start-stop-daemon thing is very likely
interfering with the operation of Xen by not actually starting daemons.

I suggest you try asking somewhere like the debian-users list to see if
anyone there knows what this thing is or what to do about it.

Ian.

On Tue, 2015-06-02 at 15:22 +0200, Beno?t Tonnerre
wrote:
> Hi, 
> 
> 
> Thanks for your answer.
> 
> 
> 
> During the Debian jessie installation, I had a problem at grub step.
> 
> The os-prober part was stuck : grub was at 66 % (os-prober tried to
> browse all the VM on LVM partitions)
> 
> After more than 15 minutes, os-prober seems to be stuck, so I rebooted
> the server.
> I had to boot in rescue mode, then, reinstalled grub and modified it
> to add "GRUB_DISABLE_OS_PROBER=true".
> 
> It seems it solved the problem, I was able to boot the server.
> 
> 
> Maybe there are some missing things in my Debian installation ?
> 
> 
> Do you want me to fill an other bug report (concerning the
> installation problem ?)
> 
> 
> I have not this problem with Debian Wheezy installation.
> 
> 
> Thanks for your time and for your help.
> 
> 
> Benoit
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 2015-05-30 10:31 GMT+02:00 Ian Campbell <ijc at debian.org>:
>         On Sat, 2015-05-30 at 05:23 +0200, Beno?t Tonnerre wrote:
>         > mai 29 23:20:50 jango xen[1150]: Starting Xen daemons: xenfs
>         xenstored
>         > mai 29 22:20:50 jango xen[1150]: Warning: Fake
>         start-stop-daemon called, doing
>         > nothing.
>         > mai 29 23:20:50 jango xen[1150]: Warning: Fake
>         start-stop-daemon called, doing
>         > nothing.
>         
>         This suggests that the xen daemons and in particular xenstored
>         are not
>         actually running, the result of which will be any command
>         which tries to
>         talk to xenstored (like xl list, most xl commands and the
>         xenstore-write
>         seen in the status log) will never get an answer and will
>         appear to
>         hang.
>         
>         I don't know what "Fake start-stop-daemon" is, but it
sounds
>         like the
>         root of your problems.
>         
>         Ian.
>         
>         
> 
>

Thanks you, Ian for your answer.

According to some google searches, it confirm that the
"fake-start-stop-daemon" is a result of a crashed installation (wich
is my
case).
I found two possible fixes :

- apt-get install dpkg --reinstall
-cp /sbin/start-stop-daemon.REAL /sbin/start-stop-daemon

I can't test it right now.
I'll try to reproduce this bug by rebooting a virtualbox installation of
Debian Jessie at grub step.

Benoit

2015-06-02 16:11 GMT+02:00 Ian Campbell <ijc at debian.org>:
> I'm afraid I don't know what may or may not have happened to your
> installation, just that this fake-start-stop-daemon thing is very likely
> interfering with the operation of Xen by not actually starting daemons.
>
> I suggest you try asking somewhere like the debian-users list to see if
> anyone there knows what this thing is or what to do about it.
>
> Ian.
>
> On Tue, 2015-06-02 at 15:22 +0200, Beno?t Tonnerre wrote:
> > Hi,
> >
> >
> > Thanks for your answer.
> >
> >
> >
> > During the Debian jessie installation, I had a problem at grub step.
> >
> > The os-prober part was stuck : grub was at 66 % (os-prober tried to
> > browse all the VM on LVM partitions)
> >
> > After more than 15 minutes, os-prober seems to be stuck, so I rebooted
> > the server.
> > I had to boot in rescue mode, then, reinstalled grub and modified it
> > to add "GRUB_DISABLE_OS_PROBER=true".
> >
> > It seems it solved the problem, I was able to boot the server.
> >
> >
> > Maybe there are some missing things in my Debian installation ?
> >
> >
> > Do you want me to fill an other bug report (concerning the
> > installation problem ?)
> >
> >
> > I have not this problem with Debian Wheezy installation.
> >
> >
> > Thanks for your time and for your help.
> >
> >
> > Benoit
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > 2015-05-30 10:31 GMT+02:00 Ian Campbell <ijc at debian.org>:
> >         On Sat, 2015-05-30 at 05:23 +0200, Beno?t Tonnerre wrote:
> >         > mai 29 23:20:50 jango xen[1150]: Starting Xen daemons:
xenfs
> >         xenstored
> >         > mai 29 22:20:50 jango xen[1150]: Warning: Fake
> >         start-stop-daemon called, doing
> >         > nothing.
> >         > mai 29 23:20:50 jango xen[1150]: Warning: Fake
> >         start-stop-daemon called, doing
> >         > nothing.
> >
> >         This suggests that the xen daemons and in particular xenstored
> >         are not
> >         actually running, the result of which will be any command
> >         which tries to
> >         talk to xenstored (like xl list, most xl commands and the
> >         xenstore-write
> >         seen in the status log) will never get an answer and will
> >         appear to
> >         hang.
> >
> >         I don't know what "Fake start-stop-daemon" is,
but it sounds
> >         like the
> >         root of your problems.
> >
> >         Ian.
> >
> >
> >
> >
>
>
>
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