Feedback on the Ubuntu kernel for server and cloud

Loïc Minier loic.minier at
Tue Mar 29 13:25:19 UTC 2011

On Tue, Mar 29, 2011, John Johansen wrote:
> What are we doing right?
> What are we doing wrong?
> What configs should we change?
> What new features should we included?

 Very EC2 centric, and most are already known, but I'll repeat my pet
 issues here for completeness:
 * some modules are purposedly not shipped in the virtual kernel to save
   space, I'd personally prefer if Ubuntu kernel features were identical
   inside and outside the cloud, but I wouldn't mind if I had to install
   an extra package to get modules which would have been striped out;
   see LP #732046
 * I didn't test on natty, only on maverick, but it was quite manual to
   install a different kernel flavor in an EC2 instance and get it
   picked up by pv-grub
 * would be nice if we weren't using GRUB 1 anymore; it's a bit
   confusing to end up with both in instances
 * the server kernel in maverick (not the virtual one) was lacking some
   features to work as a complete drop in replacement for the virtual
   one and provide Xen console, reboot etc. -- I didn't test in natty

 I'm confident that some of these have been resolved in natty and I
 apologize for not having tested the above with natty.

 On a happy note, I found it a real pleasure to use EC2 images; good

Loïc Minier

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