Ross S. W. Walker wrote:
Rudi Ahlers wrote:
Rudi Ahlers wrote:
Ross S. W. Walker wrote:
Nah, RHEL 5.1+ supports 32-bit domU (PAE and non PAE) on
64-bit dom0.
Actually RHEL Xen is 3.1 with the brain damaged 3.0
userland utilities.
-Ross
----- Original Message -----
I've run into an interesting problem, which trying to
install a 64bit
guest:
libvir: Xen Daemon error : POST operation failed: (xend.err 'Error
creating domain: I need 524288 KiB, but dom0_min_mem is 262144 and
shrinking to 262144 KiB would leave only 461040 KiB free.')
Traceback (most recent call last):
File "/usr/sbin/virt-install", line 633, in ?
main()
File "/usr/sbin/virt-install", line 578, in main
dom = guest.start_install(conscb,progresscb)
File "/usr/lib/python2.4/site-packages/virtinst/Guest.py",
line 649,
in start_install
return self._do_install(consolecb, meter)
File "/usr/lib/python2.4/site-packages/virtinst/Guest.py",
line 666,
in _do_install
self.domain = self.conn.createLinux(install_xml, 0)
File "/usr/lib64/python2.4/site-packages/libvirt.py", line 503, in
createLinux
if ret is None:raise
libvirtError('virDomainCreateLinux() failed',
conn=self)
libvirt.libvirtError: virDomainCreateLinux() failed POST operation
failed: (xend.err 'Error creating domain: I need 524288 KiB, but
dom0_min_mem is 262144 and shrinking to 262144 KiB would leave only
461040 KiB free.')
[root@gimbli ~]# uname -a
Linux gimbli 2.6.18-53.1.13.el5xen #1 SMP Tue Feb 12
13:33:07 EST 2008
x86_64 x86_64 x86_64 GNU/Linux
[root@gimbli ~]# cat /proc/meminfo
MemTotal: 713728 kB
MemFree: 503028 kB
Buffers: 25284 kB
Cached: 69356 kB
SwapCached: 0 kB
Active: 67144 kB
Inactive: 55820 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 713728 kB
LowFree: 503028 kB
SwapTotal: 2096472 kB
SwapFree: 2096472 kB
Dirty: 40 kB
Writeback: 0 kB
AnonPages: 28280 kB
Mapped: 7584 kB
Slab: 17004 kB
PageTables: 2316 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 2453336 kB
Committed_AS: 145988 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 2204 kB
VmallocChunk: 34359735799 kB
Even though Linux reports only 713MB RAM, the machine has
2GB RAM. How
/ where do I fix this?
I also saw this:
xentop - 18:04:44 Xen 3.1.0-53.1.13.el5
4 domains: 1 running, 1 blocked, 0 paused, 0 crashed, 0
dying, 0 shutdown
Mem: 2086396k total, 2076932k used, 9464k free CPUs: 2 @ 2666MHz
NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k)
MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS VBD_OO VBD_RD
VBD_WR SSID
Domain-0 -----r 122 1.6 713728 34.2 no
limit
n/a 2 4 4091 121100 0 0 0 0 0
vm01 --b--- 42 0.2 262000 12.6 262144
12.6 1 1 1680 98659 0 0 0 0 0
xen top shows the full RAM, but the system itself doesn't?
That's because 'free' or 'top' in dom0 is only going to show the
memory allocated to dom0.
Don't forget dom0 is a virtual machine too!
'xm' top will show the total memory for the system.
I suggest removing the dom0_mem restriction in /boot/grub/menu.lst
if you have it, and making sure (dom0-min-mem 512) is set in
/etc/xen/xend-config.sxp, especially if you are using X on the
system. This will make sure that dom0 will always have at least
512MB of mem available to it and if necessary can balloon out and
shrink back.
______________________________________________________________________
Thanx.
There was no dom0_mem restriction in /boot/grub/menu.list, but the
(dom0-min-mem 256) in /etc/xen/xend-config.sxp was a bit low, so I adjusted it to 512, so now free -m shows quite a bit more RAM on the system.
I have send in a request to join centos-virt@xxxxxxxxxx - but apparently someone needs to approve me as a list user.... I'd really like to get this think cracking :(
--
Kind Regards
Rudi Ahlers
CEO, SoftDux
Web: http://www.SoftDux.com
Check out my technical blog, http://blog.softdux.com for Linux or other technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stugg
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