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xen-users
RE: [Xen-users] New xen user, basic inquiries
> From: fmb fmb [mailto:feedmb@xxxxxxxxxxxxxx]
> Sent: Monday, June 22, 2009 11:47 AM
> To: Jeff Sturm
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] New xen user, basic inquiries
> I am using the host kernel, and i made a ramdisk w/o scsi modules to
prevent kernel panic. Do u
> prefer pygrub?
No, I was just curious. I've used pygrub before, but the current lot of
virtual machines we've deployed don't use it.
The upside of specifying kernel/ramdisk in our domU configs is that I
have one place to install kernel updates. The downside is that the
distro tools (rpm, yum) don't know about it, and the kernel modules
installed on a domU can become out of date with the kernel if we don't
update all at once.
When that happens, it's not disastrous, because our ramdisk image
already contains all the modules we need. But we do get a few boot-time
warnings. Overall I like being able to supply all modules in a ramdisk
(or even in the kernel image, in which case the ramdisk becomes
optional) but it does feel like I'm fighting with the distro at times,
as the distro wants to behave in another way.
After years of Xen/VMWare, we're still learning and just scratching the
surface of how we can take full advantage of virtualization, or so it
seems.
-Jeff
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