Christoph Hellwig: The KVM/qemu storage stack

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+<!-- http://microformats.org/wiki/hcalendar-cheatsheet -->
+<div class="vevent">
+ <span class="organiser">
+Christoph Hellwig
+ </span>
+ <span class="summary">
+The KVM/qemu storage stack
+ </span>
+ <a class="url" href="">Japan Linux Symposium</a>,
+ <span class="location">Tokyo, Japan</span>,
+ <abbr class="dtstart" title="20091021">October 21, 2009</abbr>
+ <div class="description">
+Utilizing a stock Linux kernel as host OS and a qemu-derived userspace to virtualize unmodified or partially para-virtualized guest on a variety of architectures KVM is seen as the future of full system virtualization for Linux. This presentation deals with the way KVM and qemu handle presenting local storage to the guest, and developments in that area. This includes the various virtualized hardware devices directly seen by the guest and midlayer functionality such as snapshotting of VM images and efficient image formats.
+<p>
+Another large part of the presentation focuses on kernel issues such as efficient system calls and asynchronous I/O implementations for dealing with the characteristics of virtualized I/O and the integration with next generation filesystems and volume managers.
+ </div>
+</div>

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diff --git a/media/jsf2009-KVM_qemu_storage_stack/video.srt.yaml b/media/jsf2009-KVM_qemu_storage_stack/video.srt.yaml
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+---
+- 5.0
+- 6
+- '[1] The KVM/qemu storage stack'
+---
+- 27.2
+- 28.2
+- '[2] Storage in Virtual Machines – Why?'
+---
+- 140.7
+- 141.7
+- '[3] A view 10.000 feet'
+---
+- 205.1
+- 206.1
+- '[4] A virtual storage stack'
+---
+- 300.5
+- 301.5
+- '[5] Requirements (high level)'
+---
+- 368.7
+- 369.7
+- '[6] Requirements – guest'
+---
+- 421.6
+- 422.6
+- '[7] Requirements – host'
+---
+- 450.1
+- 451.1
+- '[8] A practical implementation: QEMU/KVM'
+---
+- 494.9
+- 495.9
+- '[9] What is QEMU and what is KVM?'
+---
+- 589.1
+- 590.1
+- '[10] QEMU Storage stack overview'
+---
+- 701.1
+- 702.1
+- '[11] Storage transports'
+---
+- 765.9
+- 766.9
+- '[12] Paravirtualization'
+---
+- 850.3
+- 851.3
+- '[13] Paravirtualized storage transport'
+---
+- 912.9
+- 913.9
+- '[14] QEMU storage requirements - AIO'
+---
+- 957.3
+- 958.3
+- '[15] QEMU storage requirements - vectors'
+---
+- 1007.8
+- 1008.8
+- '[16] Life of an I/O request'
+---
+- 1008.0
+- 1009
+- '[17] Posix storage backend'
+---
+- 1053.1
+- 1054.1
+- '[18] Posix storage backend'
+---
+- 1060.7
+- 1061.7
+- '[19] Posix storage backend - AIO'
+---
+- 1141.4
+- 1142.4
+- '[20] Posix storage backend – more fun'
+---
+- 1195.3
+- 1196.3
+- '[21] Performance – large sequential I/O'
+---
+- 1255.9
+- 1256.9
+- '[22] Performance – 256 kilobyte random I/O'
+---
+- 1266.6
+- 1267.6
+- '[23] Performance – 16 kilobyte random I/O'
+---
+- 1326.9
+- 1327.9
+- '[24] The quest for disk image formats'
+---
+- 1411.9
+- 1412.9
+- '[25] Disk Image formats - Qcow2'
+---
+- 1467.6
+- 1468.6
+- '[26] Disk Image formats'
+---
+- 1502.0
+- 1503
+- '[27] Non-image backends'
+---
+- 1612.5
+- 1613.5
+- '[28] Benchmarks..'
+---
+- 1664.6
+- 1665.6
+- '[29] Data integrity in QEMU / caching modes'
+---
+- 1732.2
+- 1733.2
+- '[30] Data integrity - cache=writethrough'
+---
+- 1769.4
+- 1770.4
+- '[31] Data integrity - cache=writeback'
+---
+- 1790.9
+- 1791.9
+- '[32] Data integrity - cache=writeback'
+---
+- 1857.8
+- 1858.8
+- '[33] Data integrity - cache=none'
+---
+- 1944.9
+- 1945.9
+- '[34] Thin provisioning'
+---
+- 2056.1
+- 2057.1
+- '[35] Thin provisioning - standards'
+---
+- 2105.9
+- 2106.9
+- '[36] Thin provisioning - implementation'
+---
+- 2154.0
+- 2155
+- '[37] Thin provisioning - demo'
+---
+- 2473.1
+- 2474.1
+- '[38] Avoiding duplicate data'
+---
+- 2499.8
+- 2500.8
+- '[39] Backing images'
+---
+- 2539.8
+- 2540.8
+- '[40] Data deduplication'
+---
+- 2580.2
+- 2581.2
+- '[41] Questions?'

diff --git a/media/jsf2009-KVM_qemu_storage_stack/www.sh b/media/jsf2009-KVM_qemu_storage_stack/www.sh
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+wget -nc http://events.linuxfoundation.org/images/stories/slides/jls09/jls09_hellwig.odp \
+       && unoconv --format=pdf jls09_hellwig.odp
+cclive http://vimeo.com/7986973