Re: [Xen-users] Re: Out of Memory Error while booting Xen

[Rishikesh Naik <naik.pict@xxxxxxxxx>]

Hi Pasi,

I am using the kernel whose source was downloaded from mercurial repo of Xen. When I executed "make world" command, it automatically downloaded the kernel source code (linux-2.6.18-xen.hg). The kernel version is 2.6.18.8 to be precise.


Thanks,
Rishikesh

On Wed, Mar 17, 2010 at 9:57 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:

On Tue, Mar 16, 2010 at 09:06:10PM -0400, Rishikesh Naik wrote:
>    Hi All,
>
>    I have an update on the issue. I think Xen is not able to detect
>    hard-drive as I was able to see some messages that said "Total swap = 0KB
>    Free swap = 0KB" at the boot time.
>

Xen doesn't detect harddrives or any other hardware - it's the dom0 linux kernel
that does all the hardware handling (device drivers).

>    Following are the /etc/fstab file contents on my system:
>
>    # /etc/fstab: static file system information.
>    #
>    # Use 'vol_id --uuid' to print the universally unique identifier for a
>    # device; this may be used with UUID= as a more robust way to name devices
>    # that works even if disks are added and removed. See fstab(5).
>    #
>    # <file system> <mount point>   <type>  <options>       <dump>  <pass>
>    proc            /proc           proc    defaults        0       0
>    # / was on /dev/sda1 during installation
>    UUID=7a573a8c-0846-4404-8b40-a5f0256968ea /               ext3
>    relatime,errors=remount-ro 0       1
>    # swap was on /dev/sda5 during installation
>    UUID=e53d468a-1263-4e4c-919c-40aeb9838fb4 none            swap
>    sw              0       0
>    /dev/scd0       /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0
>    0
>    /dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0
>
>    ----------------------------------------------------------------------------------------------------------
>
>    I also get some messages at the boot time that said something like :
>
>    starting udev version 141
>    deprecated sysfs layout; configure as CONFIG_SYSFS_DEPRECATED.
>
>    udevd[2073] inotify_add_watch(3, (null), 10) failed: Bad address.
>
>    So, can any one of you please help me with this? I am new in using Xen as
>    such. Hence, I am not getting what is going wrong. But I need to fix this
>    urgently.
>

What's your dom0 distribution/version?
What dom0 kernel are you using?

-- Pasi

>    Any help is appreciated.
>
>    Thanks in advance!
>
>    Do let me know if you need more information.
>
>    -Rishikesh
>

>    On Mon, Mar 15, 2010 at 11:27 PM, Rishikesh Naik <[1]naik.pict@xxxxxxxxx>

>    wrote:
>
>      Hi All,
>
>      I am getting following error when I try to boot Xen:
>
>      "out of memory: kill process 2 (migration/0) score 0 and childeren"
>
>      I get this several times and machine hangs eventually.
>
>      Here is relevant entry in boot/grub/menu.lst on Ubuntu 9.04:
>
>      title       Xen 3.4.2 / Ubuntu 9.04, kernel 2.6.18.8-xen
>      uuid        7a573a8c-0846-4404-8b40-a5f0256968ea
>      kernel      /boot/xen-3.4.2.gz
>      module      /boot/vmlinuz-2.6.18.8-xen
>      root=UUID=7a573a8c-0846-4404-8b40-a5f0256968ea ro console=tty0
>      module      /boot/initrd-2.6.18.8-xen.img
>      quiet
>
>      Has anyone experienced this before? Do let me know. I tried searching in
>      mail-archives but I didn't get anything relevant.
>
>      Thanks in advance!
>      -Rishikesh
>

> References
>
>    Visible links
>    1. mailto:naik.pict@xxxxxxxxx

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