<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
For ZFS:<br>
<br>
The pitfall is primarily that it's less familiar than ldiskfs, which
basically uses the standard Linux fs tools, like ext. ZFS is its
own world, which will probably have a learning curve for someone who
has not used it before, and it must be built for the version of the
kernel you're interested in.<br>
<br>
But, Ben is right, that's likely to be easier than porting ldiskfs.<br>
<br>
- Patrick<br>
<br>
<div class="moz-cite-prefix">On 11/02/2015 01:35 PM, Smith, Stan
wrote:<br>
</div>
<blockquote
cite="mid:2DDE0F15AAFF91448E6F813C42EF4CBEA195FE29@ORSMSX105.amr.corp.intel.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<meta name="Generator" content="Microsoft Word 15 (filtered
medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
color:black;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";
color:black;}
span.EmailStyle17
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:"Consolas",serif;
color:black;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
<div class="WordSection1">
<p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span
style="color:windowtext"> lustre-devel
[<a class="moz-txt-link-freetext" href="mailto:lustre-devel-bounces@lists.lustre.org">mailto:lustre-devel-bounces@lists.lustre.org</a>]
<b>On Behalf Of </b>Patrick Farrell<br>
<b>Sent:</b> Monday, November 2, 2015 11:13 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:lustre-devel@lists.lustre.org">lustre-devel@lists.lustre.org</a><br>
<b>Subject:</b> Re: [lustre-devel] porting Lustre server to
RHEL6.7 distro running a kernel.org linux-3.12.39<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Stan,<br>
<br>
Why not work with the CentOS 7 kernel on the server anyway?
Is something your LND needs not available? CentOS 7 is freely
available and isn't far off in terms of kernel version from
3.12.<span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Yes –I’m
somewhat stuck on RHEL 6.x series as I use warewulf as a
cluster provisioning system (diskless compute nodes), so far
have not found a functional warewulf for RHEL7.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I did choose
linux-3.12.39 as a kernel base believing it to be somewhat
close to RHEL7; although I’m finding this to less so than
hoped for….<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Additionally
the RD drivers I’m using have not been ported to RHEL7;
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">In examining
lustre-2_7.62 I found support for sles12 based on 3.12.39
kernel.; thinking the lustre patches would be close…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">So now I’m
wedged between RHEL7 ldiskfs patches and SLES12 ldiskfs
patches – figure out distro specific enhancements vs lustre
enhancements.</span><br>
<br>
You may be hard pressed to get useful advice on changing the
ldiskfs patch series, that has the potential to be a pretty
big job.<span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I’m starting to
understand the magnitude of the ldiskfs task…….<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I’m ignorant
about zfs*, would zfs be a better (read that as
path-of-least-resistance) approach ? What are the zfs
pitfalls?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Stan.<o:p></o:p></span></p>
<p class="MsoNormal"><br>
<br>
Regards,<br>
- Patrick Farrell<span style="font-size:12.0pt"><o:p></o:p></span></p>
<div>
<p class="MsoNormal">On 11/02/2015 01:05 PM, Smith, Stan
wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:12.0pt">Hello,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> I’m
currently unable to search the lustre-devel archives + 1<sup>st</sup>
post to this list.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Having
read lustre documentation I find only references to
building lustre server for stock ‘distro’ kernels.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Does
someone have suggestions on how to patch ldiskfs for a
kernel.org kernel…..specifically weeding out RHEL/SLES/*
distro FS enhancements from a kernel.org base?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt">I have
written a Reliable Datagram LND which passes the LNet
selftests (client lustre build) now entering the world of
lustre server building.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Patching
the kernel.org kernel for lustre server was fairly
straightforward, creating the patch series for ldiskfs is
another story.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Thanks,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Stan.</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"><br>
<br>
<br>
<o:p></o:p></span></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>lustre-devel mailing list<o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="mailto:lustre-devel@lists.lustre.org">lustre-devel@lists.lustre.org</a><o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="http://lists.lustre.org/listinfo.cgi/lustre-devel-lustre.org">http://lists.lustre.org/listinfo.cgi/lustre-devel-lustre.org</a><o:p></o:p></pre>
</blockquote>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"><o:p> </o:p></span></p>
</div>
</blockquote>
<br>
</body>
</html>