From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 6 Nov 2020 18:11:55 +0000 From: "Dr. David Alan Gilbert" Message-ID: <20201106181155.GR3576@work-vm> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Subject: Re: [Virtio-fs] [qemu-web PATCH v2] Add virtio-fs in OSv overview blog post List-Id: Development discussions about virtio-fs List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Fotis Xenakis Cc: virtio-fs@redhat.com, thuth@redhat.com, qemu-devel@nongnu.org * Fotis Xenakis (foxen@windowslive.com) wrote: > This post briefly goes over the main points of virtio-fs and OSv, a > unikernel running under QEMU/KVM and taking advantage of its virtio-fs > implementation. > > Changes since v1: > - Fixed wording and links, as suggested by Thomas Huth. > - Added a short example of virtio-fs usage in OSv. > > Signed-off-by: Fotis Xenakis > +One central point is OSv's support for booting from virtio-fs: this enables > +deploying a modified version or a whole new application **without rebuilding** > +the image, just by adjusting its root file system contents on the host. Last, > +owing to the DAX window practically providing low-overhead access to the host's > +page cache, scalability is also expected to excel, with it being a common > +concern due to the potentially high density of unikernels per host. Hi Fotis, Since I'm not used to unikernels, I'm a little confused by this; I'd appreciate some explanation. In your unikernel, does the root filesystem just contain data? I mean being a 'unikernel' aren't all the binaries and support all linked into the kernel itself? Dave -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK