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xen-users
RE: [Xen-users] Kernel Freeze - Xen 3.0.3 - Solved! (README)
Hello guys!!! :-)
For the list's historic: If you have got a Dell PowerEgde 2850, or
another MegaRAID controller based system running on LVM and have had a
problem like this before, please have a glimpse on it.
By the list's guys help, we have faced two problems (thanks for Tim,
Badiane, Brian, ...)
- The xen-3.0.3 packages for Fedora Core 5 is only for a i386, and not
for the x64 one so that you need to compile it yourself (Note: I've
tested packages of Fedora on my virtual machine - but in a i386 and
without a RAID it works very well!)
- The MegaRAID is not supported by the of xen 3.0.3's default kernel.
So, we have to compile it for a x64 adding support for the MegaRAID on
kernel as well as for the initrd file (just on kernel it did not work
for me):
The steps are as follow:
1-) Install all the dependencies (they might not be all listed in the
README file)
gcc python-devel.x86_64 zlib-devel.x86_64 ncurses-devel.x86_64
libgcrypt-devel.x86_64 openssl-devel.x86_64 strace patch
2-) Compile the kernel (I'm not sure how I did this exactly :( )
# wget
http://bits.xensource.com/oss-xen/release/3.0.3-0/src.tgz/xen-3.0.3_0-src.tgz
# cd xen-3.0.3_0-src
# make KERNELS="linux-2.6-xen0 linux-2.6-xenU"
# make linux-2.6-xen-config CONFIGMODE=menuconfig
Edit the .config file (again I'm not sure of which kernel I had to edit,
so, I've edited either :)
[root@xen xen-3.0.3_0-src]# grep MEGARAID linux-2.6.16.29-xen/.config
CONFIG_MEGARAID_NEWGEN=y
CONFIG_MEGARAID_MM=y
CONFIG_MEGARAID_MAILBOX=y
CONFIG_MEGARAID_LEGACY=y
CONFIG_MEGARAID_SAS=y
[root@xen xen-3.0.3_0-src]# grep MEGARAID linux-2.6.16.29-xen0/.config
CONFIG_MEGARAID_NEWGEN=y
CONFIG_MEGARAID_MM=y
CONFIG_MEGARAID_MAILBOX=y
CONFIG_MEGARAID_LEGACY=y
CONFIG_MEGARAID_SAS=y
# make kernels
# make install
Then make sure that your new kernel has been edited in the GRUB file. Then boot
the system.
Even doing that it still did not work well but a least the following
ERROR stopped to come out. (yeahhh weĺl get there folks :)
"request_module: runaway loop modprobe binfmt-464c"
Then as life is not always easy this ERROR came back!!! :(
"VFS: Cannot open root device "VolGroup00/LogVol00" on unknown-block(0,0)"
Even having the ext2/3, reiserfs and megaraid built-in on my kernel!
3-) Make your new initrd as following.
# cd /boot
# mkinitrd -v -f --with=megaraid_mbox --with=megaraid_mm initrd-2.6.16.29-xen
2.6.16.29-xen
Right!! Put it in your GRUB then do your test and good luck! :-)
==================================================================================
title Xen x64
root (hd0,0)
kernel /xen-3.0.3-0.gz
module /vmlinuz-2.6.16.29-xen ro root=/dev/VolGroup00/LogVol00 noreboot
module /initrd-2.6.16.29-xen
Other useful links:
===================
Compiling Kernel with raid driver for my Dell poweredge 2850:
http://lists.xensource.com/archives/html/xen-users/2006-09/msg00455.html
Compiling legacy LSI megaraid drivers (Linux 2.6.11) with XEN:
http://lists.xensource.com/archives/html/xen-users/2005-08/msg00235.html
Problems with Dell 2850:
http://lists.xensource.com/archives/html/xen-users/2006-02/msg00400.html
Now, I'll try the second stage of XEN and will be back with more
doubts! ;)
Stay cool !!
--
Tiago Cruz <tiagocruz@xxxxxxxxx>
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Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
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