Bug 167896 - Unable to unmount a local file system exported by NFS
Summary: Unable to unmount a local file system exported by NFS
Status: CLOSED DUPLICATE of bug 167636
Alias: None
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: kernel
Version: 3.0
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Steve Dickson
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2005-09-09 09:23 UTC by Bruno Cornec
Modified: 2007-11-30 22:07 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2005-09-09 20:29:32 UTC

Attachments (Terms of Use)

Description Bruno Cornec 2005-09-09 09:23:50 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050317 Firefox/1.0.6

Description of problem:
When trying to unmount a file system which is exported by NFS to a large number of heterogeneous clients, the unmounting is denied:

umount: /d1: device is busy

/var/log/messages contains the following traces at the time of the umount:

Aug 31 08:24:36 ganlxsr3 rpc.statd[921]: Received erroneous SM_UNMON
request from ganlxsr3 for 193.x.y.z
Aug 31 08:24:36 ganlxsr3 kernel: lockd: couldn't shutdown host module!

No processs seem to be using that filesystem at the moment we tried to unmount it:

# lsof | grep d1

Gives nothing.

The problem we also see related to that issue, is that the [lockd] daemon which is now running correctly wasn't there in the list of process

# ps auxww | grep lockd
Gives nothing

Version-Release number of selected component (if applicable):
kernel 2.4.21-32.0.1.ELsmp

How reproducible:

Steps to Reproduce:
1. Wait a sufficient amount of time (some days/weeks)
2. unexport /d1
3. try to umount /d1
4. buzy message as above

Actual Results:  file system remains mounted

Expected Results:  file system should have been unmounted without error

Additional info:

Comment 1 Bruno Cornec 2005-09-09 16:39:06 UTC

*** This bug has been marked as a duplicate of 167636 ***

Comment 2 Ernie Petrides 2005-09-09 20:22:29 UTC
Reopening/reclosing to fix assignee.

Comment 3 Ernie Petrides 2005-09-09 20:29:32 UTC
Apparently an accidental duplicate report.

*** This bug has been marked as a duplicate of 167636 ***

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