[arch-dev-public] Fwd: a kernel26-xen bug?

[Tobias Powalowski]

----------  Weitergeleitete Nachricht  ----------

Betreff: a kernel26-xen bug?
Datum: Sonntag 08 August 2010, 23:21:49
Von: VPSee <vpseecom at gmail.com>
An:  tpowa at archlinux.org
Kopie:  thomas at archlinux.org, raczkow at gmail.com

Hi, I followed a guide to build a xen domu kernel for archlinux VPS:
# makepkg --asroot
# pacman -U kernel26-xen-2.6.34.1-1-i686.pkg.tar.xz
# pacman -U kernel26-xen-headers-2.6.34.1-1-i686.pkg.tar.xz

It's all fine, my i686 new kernel can run without a problem. The problem I
found is that when I tried to increase the archlinux domu's memory to
1024MB, the new domu only accept 726048k:
----
top - 19:23:40 up 28 min,  1 user,  load average: 0.00, 0.01, 0.00
Tasks:  41 total,   1 running,  40 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,
 0.0%st
Mem:    726048k total,   192192k used,   533856k free,    11108k buffers
Swap:        0k total,        0k used,        0k free,   160220k cached
----

If I do "xm mem-set archlinux 512", the archlinux domu can decrease the
memory to 512mb without a problem. If I do "xm mem-set archlinux 1024", the
domu can only take 726048k. my xen configuration file for the domu is:
----
name = "arch"
bootloader = "/usr/bin/pygrub"
vcpus = 2
maxmem = "1024"
memory = "1024"
----

I also get the same report from other users who are using our archlinux VPS.
It's a strange problem. I first thought it's a 64/32bit mixed kernel and
userland problem. Can you please give me a hint?

Thanks,

-- 
VPSee
http://www.vpsee.com

-------------------------------------------------------------
-- 
Tobias Powalowski
Archlinux Developer & Package Maintainer (tpowa)
http://www.archlinux.org
tpowa at archlinux.org
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 198 bytes
Desc: This is a digitally signed message part.
URL: <http://mailman.archlinux.org/pipermail/arch-dev-public/attachments/20100811/7921bcac/attachment.bin>