Bug 52180 - umount fails - device busy
Summary: umount fails - device busy
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: initscripts   
(Show other bugs)
Version: 7.3
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Bill Nottingham
QA Contact: Brock Organ
Depends On:
TreeView+ depends on / blocked
Reported: 2001-08-21 13:44 UTC by Gene Czarcinski
Modified: 2014-03-17 02:22 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2001-08-24 10:00:29 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
/proc/mounts (440 bytes, text/plain)
2001-08-23 15:46 UTC, Gene Czarcinski
no flags Details
/proc/mounts (440 bytes, text/plain)
2001-08-23 15:46 UTC, Gene Czarcinski
no flags Details

Description Gene Czarcinski 2001-08-21 13:44:46 UTC
Description of Problem:
This is complicated and may be kernel, mount, or something else but I am
starting with initscripts.

This occurs on beta hardware system #28 (all scsi disks) as well as another
system with only ide disks.

I have created a rc1 (roswell2) system with multiple partitions (lots of
them).  When I installed rc1, I made /, /usr, and /usr/src all ext3
partitions.  However, I left /home, usr/local, and a bunch of other
partitions mounted on /home all ext2.

During shutdown, I get messages that umount2 FAILED with device busy for
both /home and /usr.  /etc/init.d/halt then trys to umount again.  Most of
the time this succeeds.  However, at least one time this failed also.

I have run some "controlled" experiments:

I switch to single user mode (telinit 1) and make sure everything is down.
 I then manually umount partitions.

I get clean shutdowns if only / and /usr are left mounts.  Other
combinations (including only / and /home) result in failed umounts.

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

How Reproducible:

Steps to Reproduce:

Actual Results:
umount failed during shutdown

Expected Results:
clean shutdown

Additional Information:

Comment 1 Glen Foster 2001-08-21 20:30:01 UTC
This defect is considered SHOULD-FIX for Fairfax.

Comment 2 Gene Czarcinski 2001-08-23 11:08:54 UTC
I have become convinced it is something to do with ext3 so I am changing this to

The problem seems to occur when there are any other partitions other that / and
/usr mounted.  With /, /usr, and /usr/src all ext3 are mounted, the first umail
of /usr fails but succeeds on the retry.  This has happened for every shutdown I
have tried.

I have added arjanv@redhat.com as a CC since that seems to be the assignee for
new kernel problems.

Comment 3 Arjan van de Ven 2001-08-23 13:03:20 UTC
Could you paste/attach the output of "mount" during a normal session ?
(eg just boot as you normally would)

Comment 4 Gene Czarcinski 2001-08-23 15:42:40 UTC
I am now thinking that I was correct in my first call as being an initscripts
problem.  I believe that /etc/init.d/halt tries to umount /usr before it has
umounted /usr/src.

Also, if you have a partition mounted even lower in a directory tree, it will
really fail:  /usr/src/redhat/SOURCES

I am attaching my /proc/mounts (is this what you want?).

I have changed the Component back to initscripts.

Comment 5 Gene Czarcinski 2001-08-23 15:46:37 UTC
Created attachment 29214 [details]

Comment 6 Gene Czarcinski 2001-08-23 15:46:40 UTC
Created attachment 29215 [details]

Comment 7 Gene Czarcinski 2001-08-23 15:56:13 UTC
I see the problem in /etc/init.d/halt --

In function "halt_get_remaining", the output of awk needs to be piped to sort -r 

I will try this later

Comment 8 Bill Nottingham 2001-08-24 16:12:33 UTC
Will be added in 6.27-1.

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