Re: [Xen-users] Booting dom0: Kernel Panic - not syncing: Attempted to kill init!

[Steven Timm <timm@xxxxxxxx>]

If you can get to the archives, follow the link to xen 3.0.4,
that has prebuilts for RHEL4 and it supports pae.
It doesn't support 32 on 64 though, and the prebuilts are only
for 32-bit.

There are rhel4.5 prebuilt rpms on xen 3.1.0 too for 32 bit but
I have not tried them.

And as far as the initrd.img, make sure it is a reasonable size,
something like 2.5MB, if you do it wrong it will be much smaller
than that.

Steve


On Fri, 28 Mar 2008, Fabian Lueghausen wrote:

> Hey Steven,
>
> yes, I did a depmod on the kernel tree and created an initrd after compiling 
> the kernel. This initrd image is being loaded when starting the machine.
> The latest prebuilt rpm's on www.xen.org are for RHEL*5*, *not* *4*.
> I tried to run the rpm for *xen 3.0.2* and *RHEL4.1* (downloaded in the 
> archiv <http://www.xen.org/download/dl_x30rhel4.html>) but this did not work, 
> because PAE is not supported by this package.
> Thanks for this hint!
>
> *More ideas? *
>
> Fabian
>
>
> Steven Timm schrieb:
> > Fabian--did you do a depmod on the kernel tree and do a mkinitrd
> > on your machine after you compiled the kernel?  The error
> > you are getting to me looks like you do not have the block
> > devices loaded right in the initrd images you have and thus
> > it can't find the root directory to continue
> > the linux boot, maybe it is not even loading the vmlinuz-2.6.18xen
> > correctly.
> >
> > Or did you try to use the pre-built rpms or tarballs for RHEL/SL that
> > are on the www.xen.org site?  I have not tried the 3.1.0 version
> > of those on SL4 but there are rpms there for SL4.  I did use the
> > Xen 3.0.4 precompiled version for SL4 on SL4 and that works fine.
> >
> > Steve Timm
> >
> >
> > On Fri, 28 Mar 2008, Fabian Lueghausen wrote:
> >
> > > Hello list,
> > >
> > > I tried to install Xen 3.1.0 on Scientific Linux (RHEL4), but this mission 
> > > failed.. Hope you can help me by finding the reason for my problem.
> > > I downloaded the xen sources from 
> > > http://bits.xensource.com/oss-xen/release/3.1.0/src.tgz/xen-3.1.0-src.tgz 
> > > and compiled them by running "make" and "./install.sh". This seemed to 
> > > work.
> > > After setting up grub like this,
> > >
> > >   # 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/hda3 console=tty0
> > >   console=ttyS0,9600
> > >   #          initrd /initrd-version.img
> > >   boot=/dev/hda1
> > >   default=0
> > >   timeout=5
> > >   splashimage=(hd0,0)/grub/splash.xpm.gz
> > >   hiddenmenu
> > >   #
> > >   title Scientific Linux (2.6.9-11.EL)
> > >    root (hd0,0)
> > >    kernel /vmlinuz-2.6.9-11.EL ro root=LABEL=/ rhgb quiet console=tty0
> > >   console=ttyS0,9600
> > >    initrd /initrd-2.6.9-11.EL.img
> > >   *#
> > >   title Xen 3.1 / XenLinux 2.6
> > >    root (hd0,0)
> > >    kernel /xen-3.1.0.gz dom0_mem=256000 noreboot
> > >    module /vmlinuz-2.6.18-xen ro root=LABEL=/ rhgb quiet console=tty0
> > >   console=ttyS0,9600**
> > >    module /initrd-2.6.18-xen.img
> > >   *
> > >
> > > I shut down my machine and restarted it. But it won't come up... as you 
> > > can see right here:
> > >   (XEN) Command line: /xen-3.1.0.gz dom0_mem=256000 noreboot
> > >
> > >       (...)
> > >
> > >   System RAM: 511MB (523356KB)
> > >   Xen heap: 10MB (10272KB)
> > >   Domain heap initialised: DMA with 32 bits
> > >   PAE enabled, limit: 16GB
> > >   Processor #0 15:0 APIC version 20
> > >   IOAPIC[0]: apic_id 1, version 32, adress 0xfec00000, GSI 0-23
> > >   Enabling APIC mode: Flat, Using 1 I/O APICs
> > >   Using scheduler: SMP Credit Scheduler (credit)
> > >   Detected 1694.889MHz processor
> > >   CPU0: Intel(R) Pentium(R) 4 CPU 1700MHz stepping 0a
> > >   Mapping CPU0 to node 255
> > >   Total of 1 processors activated.
> > >   ENABLING IO-APIC IRQs
> > >    -> Using new ACK method
> > >   Platform timer is 1.193MHz PIT
> > >   Brought up 1 CPUs
> > >   *** LOADING DOMAIN 0 ***
> > >    Xen kernel: 32-bit, PAE, lsb
> > >    Guest kernel: 32-bit, PAE, lsb, paddr 0xc0100000 -> 0xc045f53c
> > >   PHYSICAL MEMORY ARRANGEMENT:
> > >    Dom0 alloc.: 000000001f000000 -> 000000001f800000 (61952 pages to
> > >   be allocated)
> > >   VIRTUAL MEMORY ARRANGEMENT:
> > >    Loaded kernel: c....... -> c.......
> > >    Init. ramdisk: c....... -> c.......
> > >    Phys-Mach mag: c....... -> c.......
> > >    Start info:    c....... -> c.......
> > >    Page tables:   c....... -> c.......
> > >    Boot stack:    c....... -> c.......
> > >    TOTAL:         c....... -> c.......
> > >    ENTRY ADRESS:  c....... -> c.......
> > >   Dom0 has maximum 1VCPUs
> > >   Initrd len 0x112200, start at 0xc0460000
> > >   Scrubbing Free RAM: .. done.
> > >   Xen trace buffers: disabled
> > >   Std Loglevel: Errors and warnings
> > >   Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
> > >   *Kernel Panic - not syncing: Attempted to kill init!*
> > >
> > > Is there anyone who has an idea what I'm doing wrong?! Tried it by myself 
> > > for a few hours, but I'm in the dark...
> > > Thanks for every reply to this email!
> > >
> > > Ciao,
> > > Fabian
--
------------------------------------------------------------------
Steven C. Timm, Ph.D  (630) 840-8525
timm@xxxxxxxx  http://home.fnal.gov/~timm/
Fermilab Computing Division, Scientific Computing Facilities,
Grid Facilities Department, FermiGrid Services Group, Assistant Group Leader.

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