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Using the default settings always
when make (kernel) asks?
Thanks,
2009-03-30
Zhiyuan Shao
发件人： Thiago Camargo Martins
Cordeiro
发送时间： 2009-03-30 21:22:05
收件人： Zhiyuan Shao
抄送：
xen-devel@xxxxxxxxxxxxxxxxxxx
主题： Re: Re: Re: [Xen-devel]
Upgrage PV domU kernel?
Have you enabled this
options:
CONFIG_PARAVIRT_GUEST=y
CONFIG_XEN=y
CONFIG_HIGHMEM64G=y
...in
your domU's config kernel?
Good luck!
Thiago
2009/3/30 Zhiyuan Shao <zyshao.maillist@xxxxxxxxx>
I tried this way, but seems it
doesnot work.
[root@Dell1 test-pv]# xm cr -c 1-pv.cfg
Using config file
"./1-pv.cfg".
Error: (2, 'Invalid kernel', "elf_xen_note_check: ERROR: Not
a Xen-ELF image: No ELF notes or '__xen_guest' section found.\n")
The configure file of 1-pv.cfg:
[root@Dell1 test-pv]# cat
1-pv.cfg
#----------------------------------------------------------------------------
#
Kernel image file.
kernel = "/boot/vmlinuz-2.6.29"
# Optional
ramdisk.
ramdisk = "/boot/initrd-2.6.29.img"
memory =
512
# A name for your domain. All domains must have different
names.
name = "test-pv"
vcpus = 2
vif = [
'ip=192.168.2.101, mac=00:16:3e:00:10:11, bridge=xenbr0' ]
disk =
[ 'file:/root/test-pv/vm1disk,sda1,w' ]
# Set root
device.
root = "/dev/sda1 ro"
extra = "4"
2009-03-30
Zhiyuan Shao
发件人： Thiago Camargo Martins Cordeiro
发送时间： 2009-03-26 01:55:58
收件人： zyshao.maillist
主题： Re: [Xen-devel] Upgrage PV domU
kernel?
Hi Zyshao,
You can download the
latest kernel from http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.tar.bz2
within your domU, compile it as usual, copy vmlinuz (and initramdisk) to your
dom0 (if you dont use PyGRUB) and start it!
Good
luck!
Thiago
2009/3/24 zyshao.maillist <zyshao.maillist@xxxxxxxxx>
hi pals,
I need to run some HPC applications on the PV Guest (configured with
multiple VCPUs and the application invokes also multiple processes to
communicate with each other during the lifetime), and found that in some
overcommitted cases, the application's performance degrades drastically. I
got a Xen installation with both Dom0 and DomU running
"vmlinuz-2.6.18.8-xen" kernel, i.e., the default configuration.
I am wondering if I can Upgrade the kernel of the PV Guest, i.e., domU,
to run other alternative kernel, such as latest stable linux kernel,
2.6.28.8? By this way, it may be possible to avoid the performance sacrifice
resulted by spin-lock problem.
Thanks in advance for any suggestions!
Zhiyuan Shao
2009-03-25
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