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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi Marc,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Thanks for that suggestions. This seems to have removed the NULL fileset from the list, however mmdf now shows even more strange statistics:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Inode Information<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">-----------------<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Total number of used inodes in all Inode spaces: -103900000<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Total number of free inodes in all Inode spaces: -24797856<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Total number of allocated inodes in all Inode spaces: -128697856<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Total of Maximum number of inodes in all Inode spaces: -103900000<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Any ideas why these negative numbers are being reported?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Luke.<o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></a></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> gpfsug-discuss-bounces@spectrumscale.org [mailto:gpfsug-discuss-bounces@spectrumscale.org]
<b>On Behalf Of </b>Marc A Kaplan<br>
<b>Sent:</b> 02 July 2016 20:17<br>
<b>To:</b> gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>
<b>Subject:</b> Re: [gpfsug-discuss] Trapped Inodes<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">I have been informed that it is possible that a glitch can occur (for example an abrupt shutdown) which can leave you in a situation where it looks like all snapshots are deleted,
but there is still a hidden snapshot that must be cleaned up... </span><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">The workaround is to create a snapshot `mmcrsnapshot fs dummy` and then delete it `mmdelsnapshot fs dummy` and see if that clears up the situation...<br>
</span><br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">--marc</span><br>
<br>
<br>
<br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">From: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">Luke Raimbach <<a href="mailto:Luke.Raimbach@crick.ac.uk">Luke.Raimbach@crick.ac.uk</a>></span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">To: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">gpfsug main discussion list <<a href="mailto:gpfsug-discuss@spectrumscale.org">gpfsug-discuss@spectrumscale.org</a>></span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">Date: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">07/02/2016 06:05 AM</span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">Subject: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">Re: [gpfsug-discuss] Trapped Inodes</span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">Sent by: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif"><a href="mailto:gpfsug-discuss-bounces@spectrumscale.org">gpfsug-discuss-bounces@spectrumscale.org</a></span><o:p></o:p></p>
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Hi Marc,<o:p></o:p></p>
<p>Thanks for the suggestion.<o:p></o:p></p>
<p>Snapshots were my first suspect but there are none anywhere on the filesystem.<o:p></o:p></p>
<p>Cheers,<br>
Luke.<o:p></o:p></p>
<p>On 1 Jul 2016 5:30 pm, Marc A Kaplan <<a href="mailto:makaplan@us.ibm.com">makaplan@us.ibm.com</a>> wrote:<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Question and Suggestion: Do you have any snapshots that might include files that were in the fileset you are attempting to delete? Deleting those snapshots will allow the fileset deletion to complete.
The snapshots are kinda intertwined with what was the "live" copy of the inodes. In the GPFS "ditto" implementation of snapshotting, for a file that has not changed since the snapshot operation, the snapshot copy is not really a copy but just a pointer to
the "live" file. So even after you have logically deleted the "live" files, the snapshot still points to those inodes you thought you deleted. Rather than invalidate the snapshot, (you wouldn't want that, would you?!) GPFS holds onto the inodes, until they
are no longer referenced by any snapshot.</span><br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif"><br>
--marc </span><br>
<br>
<br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F"><br>
From: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">Luke Raimbach <<a href="mailto:Luke.Raimbach@crick.ac.uk">Luke.Raimbach@crick.ac.uk</a>><span style="color:#5F5F5F"><br>
To: </span>gpfsug main discussion list <<a href="mailto:gpfsug-discuss@spectrumscale.org">gpfsug-discuss@spectrumscale.org</a>><span style="color:#5F5F5F"><br>
Date: </span>07/01/2016 06:32 AM<span style="color:#5F5F5F"><br>
Subject: </span>[gpfsug-discuss] Trapped Inodes<span style="color:#5F5F5F"><br>
Sent by: </span><a href="mailto:gpfsug-discuss-bounces@spectrumscale.org">gpfsug-discuss-bounces@spectrumscale.org</a></span><o:p></o:p></p>
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<tt>Hi All,</tt><br>
<br>
<tt>I've run out of inodes on a relatively small filesystem. The total metadata capacity allows for a maximum of 188,743,680 inodes.</tt><br>
<br>
<tt>A fileset containing 158,000,000 inodes was force deleted and has gone into a bad state, where it is reported as (NULL) and has state "deleted":</tt><br>
<br>
<tt>Attributes for fileset (NULL):</tt><br>
<tt>===============================</tt><br>
<tt>Status Deleted</tt><br>
<tt>Path --</tt><br>
<tt>Id 15</tt><br>
<tt>Root inode latest:</tt><br>
<tt>Parent Id <none></tt><br>
<tt>Created Wed Jun 15 14:07:51 2016</tt><br>
<tt>Comment</tt><br>
<tt>Inode space 8</tt><br>
<tt>Maximum number of inodes 158000000</tt><br>
<tt>Allocated inodes 158000000</tt><br>
<tt>Permission change flag chmodAndSetacl</tt><br>
<tt>afm-associated No</tt><br>
<br>
<tt>Offline mmfsck fixed a few problems, but didn't free these poor, trapped inodes. Now I've run out and mmdf is telling me crazy things like this:</tt><br>
<br>
<tt>Inode Information</tt><br>
<tt>-----------------</tt><br>
<tt>Total number of used inodes in all Inode spaces: 0</tt><br>
<tt>Total number of free inodes in all Inode spaces: 27895680</tt><br>
<tt>Total number of allocated inodes in all Inode spaces: 27895680</tt><br>
<tt>Total of Maximum number of inodes in all Inode spaces: 34100000</tt><br>
<br>
<br>
<tt>Current GPFS build: "4.2.0.3".</tt><br>
<br>
<tt>Who will help me rescue these inodes?</tt><br>
<br>
<tt>Cheers,</tt><br>
<tt>Luke.</tt><br>
<br>
<tt>Luke Raimbach</tt></span><tt><span style="font-size:10.0pt;font-family:"Cambria Math",serif">\u200b</span></tt><span style="font-size:10.0pt;font-family:"Courier New""><br>
<tt>Senior HPC Data and Storage Systems Engineer,</tt><br>
<tt>The Francis Crick Institute,</tt><br>
<tt>Gibbs Building,</tt><br>
<tt>215 Euston Road,</tt><br>
<tt>London NW1 2BE.</tt><br>
<br>
<tt>E: <a href="mailto:luke.raimbach@crick.ac.uk">luke.raimbach@crick.ac.uk</a></tt><br>
<tt>W: </tt></span><tt><u><span style="font-size:10.0pt;color:blue">www.crick.ac.uk</span></u></tt><span style="font-size:10.0pt;font-family:"Courier New""><br>
<br>
<tt>The Francis Crick Institute Limited is a registered charity in England and Wales no. 1140062 and a company registered in England and Wales no. 06885462, with its registered office at 215 Euston Road, London NW1 2BE.</tt><br>
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