[Fedora-xen] Error creating domain in RHEL5 dom0_min_mem

[Andrew Cathrow]

So your dom0 is set to keep 256M (262144) of memory.
For a RHEL/FC6 guest 256MB is really the base for the install to run in
anaconda - you'll get mixed results with less, although after install
you can safely drop it down.
Are you saying that you have 512MB total available or 512 free after
dom0 takes it's share?
It looks like you're asking for 262144 kb (256MB) of memory for your
guest is that right ?

What does xm list show for dom0's memory - have you tried running xm
mem-set in dom0 to reduce it's memory?




On Sun, 2007-03-04 at 20:15 +0530, Deependra Shekhawat wrote:

> Hello,
> I am trying to install RHEL5 beta2 as a virtual machine in RHEL5
> beta2. But all the time I get this error:
> Starting install...
> libvir: Xen Daemon error : GET operation failed: No such domain
> rhel5b2-pv1
> libvir: Xen Daemon error : POST operation failed: (xend.err 'Error
> creating domain: I need 262144 KiB, but dom0_min_mem is 262144 and
> shrinking to 262144 KiB would leave only 235124 KiB free.')
> Failed to create domain rhel5b2-pv1 
> Traceback (most recent call last):
>   File "/usr/sbin/virt-install", line 406, in ?
>     main()
>   File "/usr/sbin/virt-install", line 370, in main
>     dom = guest.start_install(conscb)
>   File "/usr/lib/python2.4/site-packages/virtinst/ParaVirtGuest.py",
> line 202, in start_install
>     return XenGuest.XenGuest.start_install(self, consolecb)
>   File "/usr/lib/python2.4/site-packages/virtinst/XenGuest.py", line
> 355, in start_install 
>     self.domain = self.conn.createLinux(cxml, 0)
>   File "/usr/lib/python2.4/site-packages/libvirt.py", line 249, in
> createLinux
>     if ret is None:raise libvirtError('virDomainCreateLinux()
> failed') 
> libvirt.libvirtError: virDomainCreateLinux() failed
> 
> Note that I have tried both GUI and command line but all the time the
> same error.
> Here is my grub.conf file:
> title Red Hat Enterprise Linux Client (2.6.18-1.2747.el5xen )
>         root (hd0,5)
>         kernel /boot/xen.gz-2.6.18-1.2747.el5 dom0_mem=256M
>         module /boot/vmlinuz-2.6.18-1.2747.el5xen ro root=LABEL=/ rhgb
> quiet
>         module /boot/initrd-2.6.18-1.2747.el5xen.img 
> 
> Note that I have only 512 MB RAM available. 
> Please help.
> 
> Regards
> Deependra Shekhawat
> 
> 
> 
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--

Andrew Cathrow
Red Hat, Inc.

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