Bug 432879

Summary: Cannot mount over 24 krb5 mounts
Product: Red Hat Enterprise Linux 5 Reporter: drew.middlesworth
Component: nfs-utilsAssignee: Steve Dickson <steved>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: 5.1CC: kvolny
Target Milestone: rc   
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2009-01-20 21:01:38 UTC Type: ---
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Description Flags
Patch to increase the number of krb5 mounts none

Description drew.middlesworth 2008-02-14 21:52:55 UTC 
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):

nfs-utils-1.0.9-24.el5

How reproducible:

Always

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.
  
Actual results:

/var/log/messages:
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
accessed. 

Expected results:

No errors.

Additional info:

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.
Comment 1 drew.middlesworth 2008-02-14 21:52:55 UTC 
Created attachment 294951 [details]
Patch to increase the number of krb5 mounts
Comment 2 RHEL Program Management 2008-06-02 20:18:18 UTC 
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
release.
Comment 4 Steve Dickson 2008-09-18 12:02:40 UTC 
Fixed nfs-utils-1.0.9-36.el5
Comment 7 errata-xmlrpc 2009-01-20 21:01:38 UTC 
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.

http://rhn.redhat.com/errata/RHBA-2009-0107.html