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<p><font face="monospace">Hi Ed,</font></p>
<p><font face="monospace">thanks! In our case we do have unique
export ids, but the same fsid, and this seems to create issues.
Also, reading Ganesha docs, I can see [*]:</font></p>
<h3 style="box-sizing: border-box; margin-top: 24px; margin-bottom:
16px; font-size: 1.25em; font-weight:
var(--base-text-weight-semibold, 600); line-height: 1.25; color:
rgb(31, 35, 40); font-family: -apple-system, BlinkMacSystemFont,
"Segoe UI", "Noto Sans", Helvetica, Arial,
sans-serif, "Apple Color Emoji", "Segoe UI
Emoji"; font-style: normal; font-variant-ligatures: normal;
font-variant-caps: normal; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform: none; widows:
2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space:
normal; background-color: rgb(255, 255, 255);
text-decoration-thickness: initial; text-decoration-style:
initial; text-decoration-color: initial;"><span style="box-sizing:
border-box;">FileSystem_ID EXPORT Option</span></h3>
<p style="box-sizing: border-box; margin-top: 0px; margin-bottom:
16px; color: rgb(31, 35, 40); font-family: -apple-system,
BlinkMacSystemFont, "Segoe UI", "Noto Sans",
Helvetica, Arial, sans-serif, "Apple Color Emoji",
"Segoe UI Emoji"; font-size: 16px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2; text-align:
start; text-indent: 0px; text-transform: none; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space:
normal; background-color: rgb(255, 255, 255);
text-decoration-thickness: initial; text-decoration-style:
initial; text-decoration-color: initial;">There is an EXPORT
config option, FileSystem_ID. This really should not be used, all
it does it designate an fsid to be used with the attributes of all
objects in the export. It will be folded to fit into NFSv3.
Because it applies to the entire export, it prevents exporting
multiple file systems since there will likely be issues with
collision of inode numbers on the client.</p>
<p style="box-sizing: border-box; margin-top: 0px; margin-bottom:
16px; color: rgb(31, 35, 40); font-family: -apple-system,
BlinkMacSystemFont, "Segoe UI", "Noto Sans",
Helvetica, Arial, sans-serif, "Apple Color Emoji",
"Segoe UI Emoji"; font-size: 16px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2; text-align:
start; text-indent: 0px; text-transform: none; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space:
normal; background-color: rgb(255, 255, 255);
text-decoration-thickness: initial; text-decoration-style:
initial; text-decoration-color: initial;"><font size="1"><font face="monospace">so before touching the defaults in GPFS CES
configuration I would like some guidance or experiences from
this mlist :)</font></font></p>
<p style="box-sizing: border-box; margin-top: 0px; margin-bottom:
16px; color: rgb(31, 35, 40); font-family: -apple-system,
BlinkMacSystemFont, "Segoe UI", "Noto Sans",
Helvetica, Arial, sans-serif, "Apple Color Emoji",
"Segoe UI Emoji"; font-size: 16px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2; text-align:
start; text-indent: 0px; text-transform: none; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space:
normal; background-color: rgb(255, 255, 255);
text-decoration-thickness: initial; text-decoration-style:
initial; text-decoration-color: initial;"><font size="1"><font face="monospace">cheers</font></font></p>
<p style="box-sizing: border-box; margin-top: 0px; margin-bottom:
16px; color: rgb(31, 35, 40); font-family: -apple-system,
BlinkMacSystemFont, "Segoe UI", "Noto Sans",
Helvetica, Arial, sans-serif, "Apple Color Emoji",
"Segoe UI Emoji"; font-size: 16px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2; text-align:
start; text-indent: 0px; text-transform: none; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space:
normal; background-color: rgb(255, 255, 255);
text-decoration-thickness: initial; text-decoration-style:
initial; text-decoration-color: initial;"><font size="1"><font face="monospace">leo</font></font><br>
</p>
<p style="box-sizing: border-box; margin-top: 0px; margin-bottom:
16px; color: rgb(31, 35, 40); font-family: -apple-system,
BlinkMacSystemFont, "Segoe UI", "Noto Sans",
Helvetica, Arial, sans-serif, "Apple Color Emoji",
"Segoe UI Emoji"; font-size: 16px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2; text-align:
start; text-indent: 0px; text-transform: none; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space:
normal; background-color: rgb(255, 255, 255);
text-decoration-thickness: initial; text-decoration-style:
initial; text-decoration-color: initial;"><font size="1" face="monospace">[*]
<a class="moz-txt-link-freetext" href="https://github.com/nfs-ganesha/nfs-ganesha/wiki/File-Systems#FileSystem_ID_EXPORT_Option">https://github.com/nfs-ganesha/nfs-ganesha/wiki/File-Systems#FileSystem_ID_EXPORT_Option</a></font><br>
</p>
<p><font face="monospace"></font></p>
<p><br>
</p>
<pre class="moz-signature" cols="72">Paul Scherrer Institut
Dr. Leonardo Sala
Group Leader Data Analysis and Research Infrastructure
Deputy Department Head a.i Science IT Infrastructure and Services department
Science IT Infrastructure and Services department (AWI)
WHGA/036
Forschungstrasse 111
5232 Villigen PSI
Switzerland
Phone: +41 56 310 3369
<a class="moz-txt-link-abbreviated" href="mailto:leonardo.sala@psi.ch">leonardo.sala@psi.ch</a>
<a class="moz-txt-link-abbreviated" href="http://www.psi.ch">www.psi.ch</a></pre>
<div class="moz-cite-prefix">On 6/27/23 19:41, Wahl, Edward wrote:<br>
</div>
<blockquote type="cite" cite="mid:CH0PR01MB6825595F142F5D9C9F269324A827A@CH0PR01MB6825.prod.exchangelabs.com">
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<p class="MsoNormal"><span>I vaguely recall seeing this and
testing it. My notes to myself say: ‘As long as the
export_id is unique, you are fine.’ See the manuals,
ganesha loves Camel Case so it’s more than likely actually
“Export_Id” or some such. </span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span>Ed Wahl</span></p>
<p class="MsoNormal"><span>Ohio Supercomputer Center</span></p>
<p class="MsoNormal"><span> </span></p>
<div>
<p class="MsoNormal"><b><span>From:</span></b><span>
gpfsug-discuss <a class="moz-txt-link-rfc2396E" href="mailto:gpfsug-discuss-bounces@gpfsug.org"><gpfsug-discuss-bounces@gpfsug.org></a>
<b>On Behalf Of </b>Leonardo Sala<br>
<b>Sent:</b> Tuesday, June 27, 2023 10:18 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:gpfsug-discuss@spectrumscale.org">gpfsug-discuss@spectrumscale.org</a><br>
<b>Subject:</b> [gpfsug-discuss] CES, Ganesha, and
Filesystem_id</span></p>
</div>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal"><span>Hallo, we are checking our current
CES configuration, and we noticed that by default GPFS
puts always Filesystem_Id=666. 666 [*], no matter which
Export_Id value the export has. To my understanding (which
is poor!), this means that all clients
</span></p>
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<div>
<p class="MsoNormal"><span></span></p>
</div>
<p><span>Hallo,</span></p>
<p><span>we are checking our current CES configuration, and we
noticed that by default GPFS puts always
Filesystem_Id=666.666 [*], no matter which Export_Id value
the export has. To my understanding (which is poor!), this
means that all clients will see all our exports (~20) with
the same device number, creating various possible issues
(e.g. file state handles). Questions:</span></p>
<p><span>* is there a reason for such default value? If we
change it, are there unpleasant effects we could see?</span></p>
<p><span>* what would be a reasonable value? Looking around I
saw that Filesystem_Id = Export_Id.Export_Id is quite
common, with the possible issue of using the forbidden
152.152 [**]</span></p>
<p><span>* what happens if we actually remove the Filesytem_Id
parameter from gpfs.ganesha.exports.conf?</span></p>
<p><span>* is there a way to modify Filesystem_Id in
gpfs.ganesha.exports.conf without editing the file, eg using
mmnfs commands (seems not, but I might be mistaken)?</span></p>
<p><span>Thanks a lot!</span></p>
<p><span>cheers</span></p>
<p><span>leo</span></p>
<p> </p>
<p><span>[*] <a href="https://urldefense.com/v3/__https:/www.ibm.com/docs/en/storage-scale/5.0.4?topic=exports-making-bulk-changes-nfs__;!!KGKeukY!2ZoLSJiACv5XMmk6G9XTy958E9yslS6wIGqy1RaI3D0d_6hraQHFRLCEBCWh73texj92o7WDULi105hTHXqh$" moz-do-not-send="true">
https://www.ibm.com/docs/en/storage-scale/5.0.4?topic=exports-making-bulk-changes-nfs</a></span></p>
<p><span>[**] <a href="https://urldefense.com/v3/__https:/github.com/nfs-ganesha/nfs-ganesha/issues/615__;!!KGKeukY!2ZoLSJiACv5XMmk6G9XTy958E9yslS6wIGqy1RaI3D0d_6hraQHFRLCEBCWh73texj92o7WDULi10-6QZN1l$" moz-do-not-send="true">
https://github.com/nfs-ganesha/nfs-ganesha/issues/615</a></span></p>
<pre>-- </pre>
<pre>Paul Scherrer Institut</pre>
<pre>Dr. Leonardo Sala</pre>
<pre>Group Leader Data Analysis and Research Infrastructure</pre>
<pre>Deputy Department Head a.i Science IT Infrastructure and Services department</pre>
<pre>Science IT Infrastructure and Services department (AWI)</pre>
<pre>WHGA/036</pre>
<pre>Forschungstrasse 111</pre>
<pre>5232 Villigen PSI</pre>
<pre>Switzerland</pre>
<pre> </pre>
<pre>Phone: +41 56 310 3369</pre>
<pre><a href="mailto:leonardo.sala@psi.ch" moz-do-not-send="true" class="moz-txt-link-freetext">leonardo.sala@psi.ch</a></pre>
<pre><a href="https://urldefense.com/v3/__http:/www.psi.ch__;!!KGKeukY!2ZoLSJiACv5XMmk6G9XTy958E9yslS6wIGqy1RaI3D0d_6hraQHFRLCEBCWh73texj92o7WDULi105e6ItOo$" moz-do-not-send="true">www.psi.ch</a></pre>
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