Skip to main content
NetApp Knowledge Base

vol0 inode usage unexpected high and growing permanently

  1. Last updated
  2. Save as PDF
Views:
138
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
core
Last Updated:

Applies to

  • ONTAP 9.13.1+ without fix for CONTAP-115704.
  • SSH public key authentication in use, likely with very frequent SSH sessions from automation scripts.
  • Node root volume (vol0) inode exhaustion or permanent increase.
  • Node /tmp/ directory capacity exhaustion.

Issue

  • High inode count caused by files matching  /mroot/etc/cluster_config/vserver/.vserver_*/config/auth.[0-9,a-z,A-Z]+ .
  • CONTAP-115704 (legacy id 1595173) lists different symptoms, one of them is continuous increase of vol0 inode usage.
  • In the following example, node MyCluster-02 is not affected (was recently cleaned up) but node MyCluster-01 is heavily affected with >12 million inodes:

MyCluster::*> node run -node * -command df -i vol0
2 entries were acted on.

Node: MyCluster-01
Filesystem               iused      ifree  %iused  Mounted on
/vol/vol0/            12330575    8920551     58%  /vol/vol0/

Node: MyCluster-02
Filesystem               iused      ifree  %iused  Mounted on
/vol/vol0/              294533   20956593      1%  /vol/vol0/

Note: Usually both nodes are affected, the magnitude depends majorly  on LIF distribution across nodes for LIFs that are used for SSH access.

  • Unexpected high inode count in root volume, can lead to unforseeable issues in different subsystems and processes.

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.