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Re: [Xen-users] Mounting domU filesystem on Dom0. (xm mount)

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Mounting domU filesystem on Dom0. (xm mount)
From: Álvaro López García <alvaro.garcia@xxxxxxxxxx>
Date: Wed, 14 Mar 2007 13:03:17 +0100
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Ligesh wrote:
 I have raised this thing many times in myriad different ways, and to me, Xen 
still seem to lack the ability to access the domUs in a proper manner so as to 
allow mass management of the domUs, and one of the important things here is 
backup. If you have to manage 1000 domUs across 50-60 machines, then it would 
be essential to be able to take backup of the entire system. This actually can 
be achieved even on normal Xen system, by running an nfs daemon and exporting 
the '/' to the dom0, which can then be mounted and backedup, like any live 
system.

 Now, my question is: is there some chance that this feature can be built into 
the domU kernel itself.

 The command should be something like this:

 xm mount <domuid> /mnt/domU

 What's the opinion of the people here in the list about a mount command? This 
will solve quite a lot of problems that we are facing now vis-a-vis xen, and I 
think even UML has some mechnism whereby you can mount certain directories in 
the domU to the dom0.
What should this command do? Just mount the filesystem on the dom0? I don't really get what you mean...

If you want to backup the system have you tried evms[1] and its snapshotting?

[1] http://evms.sourceforge.net/

--
Álvaro López

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