Bug 119428 - (NFSD)nfs mounts hang forever
Summary: (NFSD)nfs mounts hang forever
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 2
Hardware: athlon
OS: Linux
medium
high
Target Milestone: ---
Assignee: Steve Dickson
QA Contact: Brian Brock
URL:
Whiteboard:
Depends On:
Blocks: FC2Blocker FC3Target FC4Target
TreeView+ depends on / blocked
 
Reported: 2004-03-30 13:09 UTC by Neal Becker
Modified: 2014-01-21 22:49 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2004-12-07 16:11:03 UTC


Attachments (Terms of Use)

Description Neal Becker 2004-03-30 13:09:46 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (compatible; Konqueror/3.2; Linux) (KHTML, like Gecko)

Description of problem:
nfs mounts from this kernel's nfsd just hang forever.
cat /etc/exports
/  139.85.0.0/16(rw,async) *.hns.com(rw,async) 10.100.20.0/16(rw,async) *.adg.labs.md.hnsnet(rw,async) 10.100.21.0/16(rw,async)

No error messages, just hang.
In fact, no message at all, not even normal "mount request...".

Here is an example, I'm telnetting to a client which should automount my home (I've been using this same setup forever, there is nothing new except the nfs server kernel):
Red Hat Enterprise Linux WS release 3 (Taroon Update 1)
Kernel 2.4.21-9.0.1.ELsmp on an i686
login: nbecker
Password:

[... still hung forever..., no message at all on server log...]

Version-Release number of selected component (if applicable):
2.6.4-1.281

How reproducible:
Always

Steps to Reproduce:
1. attempt to mount
2.
3.
    

Additional info:

Comment 1 Neal Becker 2004-03-30 19:48:55 UTC
Workaround: 
 
If I remove all overlapping entries from /etc/exports the problem is 
gone.  That is, in my previous exports, I had both IP address ranges 
and names that mapped to the same IPs.  I got rid of the names and 
kept only IP ranges, and now it's OK. 
 
IMHO, this fix is totally unacceptable.  It should work with this 
workaround. 
 

Comment 2 Seth Vidal 2004-05-07 16:16:52 UTC
Talk to the nfs-utils maintainer upstream. Parsing of the exports file
is kinda dicey.


Comment 3 Steve Dickson 2004-11-29 11:05:48 UTC
would it be possible to post a AltSysRq-t backtrace of all the
the processes which would help tell me where the nfsds are hanging. 

Comment 4 Dave Jones 2004-12-07 06:33:56 UTC
this still a problem with the 2.6.9 kernel ?

Comment 5 Neal Becker 2004-12-07 12:24:00 UTC
No problem now. 


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