Date: Fri, 17 Sep 2010 07:55:23 +0100 From: Rui Paulo <rpaulo@FreeBSD.org> To: gibbs@scsiguy.com Cc: current@FreeBSD.org, xen@FreeBSD.org Subject: Re: CFT - Xen infrastructure and block I/O improvements Message-ID: <1801A881-E1C8-4B41-AD14-940686A37A27@FreeBSD.org> In-Reply-To: <4C92C815.7070508@scsiguy.com> References: <4C92C815.7070508@scsiguy.com>
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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: >=20 > 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. >=20 > 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. >=20 > http://people.freebsd.org/~gibbs/FreeBSD-head-xen-diffs_2010_09_16.txt 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. Regards, -- Rui Paulo
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