CFT - Xen infrastructure and block I/O improvements
rpaulo at FreeBSD.org
Fri Sep 17 06:55:28 UTC 2010
On 17 Sep 2010, at 02:44, Justin T. Gibbs wrote:
> At Spectra Logic, we are using FreeBSD amd64 under Xen to serve storage
> to other Xen domains. Over the past 9 months, we've made several changes
> to FreeBSD's Xen support. These include:
> o Support for backend devices (e.g. blkback)
> o Extensions to the Xen para-virtualized block API to allow for larger
> and more outstanding I/Os.
> o A completely rewritten block back driver with support for fronting
> I/O to both raw devices and files.
> o General cleanup and documentation of the XenBus and XenStore support code.
> o Robustness and performance updates for the block front driver.
> o Fixes to the netfront driver.
> Some of these changes have already been pushed back into FreeBSD, but the
> bulk of them need additional testing, especially under i386 PV, before
> they can be committed. If you work in the Xen area, I'd appreciate your
> review and/or testing of these changes.
Justin, this is quite a big diff (16k lines). I wonder if you can create separate diffs (xenstore, blkback, xenbus, etc.) for easier review and commenting.
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