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xen-devel
Re: [Xen-devel] [PATCH] Add Small Memory Warning to XM for create and me
Mark Williamson wrote:
I really like this idea. I think it's most important for ballooning, which is
a really easy way to get a domain to commit suicide otherwise ;-)
I'd quite like to see it implemented Xend-side, though, with the "warning
level" configurable (and probably disablable) in the xend-config.sxp so that
users who really do want to create very small domUs can tweak the system not
to warn them.
I'm not sure I agree that Xend is the right place to do this. You would
have to add another parameter to the either the domain config or to the
actual create() call that basically had the semantics of "if memory is
less than X, throw an exception." That seems like a rather awkward
addition to the interface and it makes client code harder to write.
I'll attempt to be telepathic here and guess that you suggested this
because there's no xm config file so there's no easy way to be able to
tell xm to never give an error when mem is too small? I think this is a
good point in time to start thinking about just implementing an xm
config file.
If you use SafeConfigParser and just grab from a standard location (say
/etc/xen/xm.conf), you should be able to do it properly (just within xm)
with very little code.
Thoughts?
Regards,
Anthony Liguori
Cheers,
Mark
On Friday 21 April 2006 16:17, Daniel Stekloff wrote:
Hi,
This patch adds a warning to xm for creating and setting a domain's
memory under 32 MBs. Patch adds a "--force-mem" option to "xm create"
and "xm mem-set" commands for creating or setting memory less than 32
MBs. Patch also updates man page and user manual.
All comments welcome.
Thanks,
Dan
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