Re: [Xen-devel] Creating multiple domains using NFS mounts

[Abhishek Chandra <abhishek@xxxxxxxxxxxx>]

Hi Ian,
 Thanks for your pointers. It turned out to be a memory prob. I have a 128M 
machine, and I had
 assigned most of it to dom0. Reducing the memory for all the domains seems to 
work. 

Thanks,
Abhishek
 
On Thu, 6 May 2004, Ian Pratt wrote:

> Date: Thu, 06 May 2004 01:42:05 +0100
> From: Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>
> To: Abhishek Chandra <abhishek@xxxxxxxxxxxx>
> Cc: xen-devel@xxxxxxxxxxxxxxxxxxxxx, Ian.Pratt@xxxxxxxxxxxx
> Subject: Re: [Xen-devel] Creating multiple domains using NFS mounts 
> 
> 
> > I'm using nfs mount option for the root and 
> > a linuxrc to mount the /usr partition in the new domain as
> > explained in the XenDemoCD howto. This whole setup works fine for the
> > first domain (dom1), but fails when I try to start the second domain.
> > Here;s the error message:
> > 
> > [root@obelix51 xc]# xc_dom_create.py -f dom2_nfsroot_nfsusr.config -Dvmid=2
> > Parsing config file 'dom2_nfsroot_nfsusr.config'
> > VM image           : "/boot/xenolinux.gz"
> > VM ramdisk         : ""
> > VM memory (MB)     : "64"
> > VM IP address(es)  : "192.168.245.53; 169.254.1.2"
> > VM block device(s) : ""
> > VM cmdline         : 
> > "ip=169.254.1.2:169.254.1.0:169.254.1.0:255.255.0.0::eth0:on
> > root=/dev/nfs ro nfsroot=/nfs/export-root-dom2 init=/linuxrc 4 VMID=2"
> > Error creating domain
> 
> 
> I suspect this isn't a problem with the config of VM 2. Just
> to check this, please can you start VM 2 first (using the
> exact same command line above), before starting VM 1. BTW: If
> the two VMs are similar, you might want to have a single shared
> config file and use vmid to setup the appropriate IP addresses
> etc.
> 
> Unfortunately, xen 1.2 doesn't give very useful error messages if
> something goes wrong in domain creation. The 1.3 (unstable) tree
> is rather better in this respect. One obvious question is how
> much memory has the machine got? Dom0 will be consuming memory,
> as will Xen itself. What does xc_physinfo.py show?
> 
> Ian
> 
> 
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