Red Hat Bugzilla – Bug 432879
Cannot mount over 24 krb5 mounts
Last modified: 2009-09-03 09:45:35 EDT
Description of problem:
nfs-utils-1.0.9-24 cannot mount over around 24 krb5 nfs3 mounts concurrently.
Errors start to show up in /var/log/messages and the mounts time out when accessed.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. As a NFS client, mount up over around 24 krb5 nfs3 file systems. I tested
this using autofs.
2. You will see AUTH_GSS errors in /var/log/messages and the file systems will
hang when accessed.
kernel: RPC: AUTH_GSS upcall timed out.
kernel: Please check user daemon is running!
Also the file systems aren't usable and many of them will just timeout when
I have included a patch that increases this value to 256, and with that patch
built with the package I have successfully mounted and accessed over 1800 nfs
concurrent autofs krb5 mounts, although I'm really amazed everything could scale
that high. Feel free to change that number as needed.
Created attachment 294951 [details]
Patch to increase the number of krb5 mounts
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release. Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products. This request is not yet committed for inclusion in an Update
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.