<html><head></head><body style="color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><div>I think LLNL would also appreciate making #1 a priority.</div><div><br></div><div>Chris Morrone – can you confirm?</div><div><br></div><div><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 8px; margin-left: 0px; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 13px; "><div><div><p ws="true" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Ian R. Colle<br>HPC Project Manager, Whamcloud<br>Cell: +1.303.601.7713<br>Email: <a href="mailto:ian@whamcloud.com">ian@whamcloud.com</a></p></div></div><div style="clear: both; "></div></div><div style="max-width: 469px; padding-top: 0.5em; padding-right: 0px; padding-bottom: 0.5em; padding-left: 0px; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 13px; "><a href="http://www.linkedin.com/in/ircolle"><img src="http://images.wisestamp.com/apps/buttons/linkedinbutton_option_3.png" style="border-top-style: none; border-right-style: none; border-bottom-style: none; border-left-style: none; border-width: initial; border-color: initial; "></a></div><div style="max-width: 469px; padding-top: 0.5em; padding-right: 0px; padding-bottom: 0.5em; padding-left: 0px; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 13px; "><a href="http://www.twitter.com/ircolle"><img src="http://twitter-badges.s3.amazonaws.com/follow_me-a.png" alt="Follow teststamp on Twitter" style="border-top-style: none; border-right-style: none; border-bottom-style: none; border-left-style: none; border-width: initial; border-color: initial; "></a></div></div></div></div></div><div><br></div><span id="OLK_SRC_BODY_SECTION"><div style="font-family:Calibri; font-size:11pt; text-align:left; color:black; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt"><span style="font-weight:bold">From: </span> Nathan Rutman <<a href="mailto:Nathan_Rutman@xyratex.com">Nathan_Rutman@xyratex.com</a>><br><span style="font-weight:bold">Date: </span> Tue, 29 May 2012 16:54:46 -0700<br><span style="font-weight:bold">To: </span> John Carrier <<a href="mailto:carrier@cray.com">carrier@cray.com</a>><br><span style="font-weight:bold">Cc: </span> <<a href="mailto:discuss@lists.opensfs.org">discuss@lists.opensfs.org</a>>, <<a href="mailto:twg@lists.opensfs.org">twg@lists.opensfs.org</a>><br><span style="font-weight:bold">Subject: </span> Re: [Discuss] DDN requirements<br></div><div><br></div><div><base href="x-msg://1981/"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On May 29, 2012, at 9:23 AM, John Carrier wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div lang="EN-US" link="blue" vlink="purple"><div class="WordSection1" style="page: WordSection1; "><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; ">I received this list from DDN over the weekend. I note that the first two items on their list were not captured during our requirements gathering this spring. I think we should add them to our requirements document, but we need to discuss how they impact our recommendations to the OpenSFS Board.<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; ">I have added these to the spreadsheet and taken the liberty of matching “patch-less server support” with our existing “better support for newer kernels”. <o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; ">--jc<o:p></o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; ">DDN's Lustre requirements for OpenSFS TWG<o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; "><o:p> </o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; ">1) Architecture/Developer documentation </span><span style="color: black; "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; "> Well documented internals of MDS, MGS, OSS, OST, OSD API, etc. </span></div></div></div></span></blockquote><div><br></div>Interestingly, this first item is not on anyone else's list, however I also think it is important for the dissemination of Lustre knowledge and to help grow the Lustre contributor community. I also believe Oak Ridge feels strongly about this, as the producers of the first Lustre Internals doc. I think an expansion and update of this is worthy of funding consideration.</div><div><br></div><div><br><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div lang="EN-US" link="blue" vlink="purple"><div class="WordSection1" style="page: WordSection1; "><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; "> </span><span style="color: black; "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; ">2) Improved small and medium I/O performance (compare to GPFS) </span></div></div></div></span></blockquote><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div lang="EN-US" link="blue" vlink="purple"><div class="WordSection1" style="page: WordSection1; "><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; ">3) Single client performance while preserving scalability (even at a single thread per client)</span><span style="color: black; "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; ">4) OST migration/rebalancing (compare to GPFS)</span><span style="color: black; "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; ">5) LNET channel bonding </span><span style="color: black; "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; ">6) Patch-less server support</span><span style="color: black; "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; ">7) Single MDS File create performance </span><span style="color: black; "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; ">8) Single MDS Directory traversal and attribute retrieval performance </span><span style="color: black; "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; ">9) Improved Lustre tests and testing infrastructure </span><span style="color: black; "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="font-size: 13.5pt; color: black; ">10) Quality of service (mechanism and policies) </span><span style="color: black; "><o:p></o:p></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div></div>_______________________________________________<br>discuss mailing list<br><a href="mailto:discuss@lists.opensfs.org" style="color: blue; 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