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Re: [Xen-devel] -xen config...

To: Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] -xen config...
From: Anthony Liguori <aliguori@xxxxxxxxxx>
Date: Sun, 18 Dec 2005 22:59:46 -0600
Cc: James Harper <james.harper@xxxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
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Ian Pratt wrote:

Is there any reason that ext2 is set as 'y' while ext3 is set as 'm'? It seems to me that they (and the other 'common' filesystems) should be the same...

I agree this is pretty odd. The -xen config was based on one for a
distro kernel, so I think it's standard practice.
Can anyone put forward a good reason not to compile ext3 in?
I don't know that it matters, but for what it's worth, this shouldn't create problems.

ext3 is (almost) backwards compatible with ext2. ext2 is suffient to mount the root device such that modules can be loaded (and then the root filesystem is actually mounted).

If you watch an Ubuntu boot-up, you'll notice that modules are loaded before the root file system is mounted as ext2.

This is not likely to be the reason you're seeing filesystem corruption as if there are any problems with the ext3 filesystem, the ext2 driver will refuse to mount it (complaining that it contains "unsupported features").

Can you ellaborate on the filesystem corruption problems you have been seeing? xm destroy (as opposed to xm shutdown) is an easy way to corrupt yourself.

Regards,

Anthony

Ian
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