Bug 127510 (nfs_mount_limit)

Summary:	ns9 automount[19919]: >> too many mounted file systems
Product:	[Fedora] Fedora	Reporter:	Patrick McShane <pem>
Component:	autofs	Assignee:	Jeff Moyer <jmoyer>
Status:	CLOSED WONTFIX	QA Contact:	Brock Organ <borgan>
Severity:	high	Docs Contact:
Priority:	medium
Version:	2	CC:	pem
Target Milestone:	---
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Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2004-07-09 11:53:23 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Patrick McShane 2004-07-09 05:01:33 UTC

Description of problem:
Redhat Fedora Core2 client machine cannot mount more than 803 nfs 
mounts via autofs.

Version-Release number of selected component (if applicable):
autofs-4.1.2-2
nfs-utils-1.0.6-22

How reproducible:
Try to mount more than 803 automounts on a client-side automount-
configured machine (/home/username - auto_home map).

Steps to Reproduce:
1. Using autofs, mount more thean 803 mounts (auto_home)
2. /var/log/messages will show many "too many mounted file systems" 
errors
  
Actual results:
Fedora Core 2 client machine can't mount more than 803 NFS automounts 
(/home/username - auto_home map)

Expected results:
More than 803 mounts.

Additional info:
Is there a way to increase the number of NFS client-side automounts 
to greater than 803 in Fedora Core 2.   Is this a configurable option?
Please advise.

Comment 1 Jeff Moyer 2004-07-09 11:53:23 UTC

Note that this is not an autofs issue, it is an nfs issue.  NFS will
use low (reserved) port numbers when making its connections, and there
is a relatively small number of these available.  As such, it is
likely that this is the restriction you are running into.

There is no tuning knob to fix this for FC2.