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Bug 174000

Summary: Should umount tmpfs before swapoff
Product: [Fedora] Fedora Reporter: Russell Coker <rcoker>
Component: initscriptsAssignee: Bill Nottingham <notting>
Status: CLOSED RAWHIDE QA Contact: Brock Organ <borgan>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: mitr, rvokal, tmraz
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: 8.26-1 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-02-07 12:46:14 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On:    
Bug Blocks: 150221    

Description Russell Coker 2005-11-23 15:24:14 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (compatible; Konqueror/3.4; Linux) KHTML/3.4.92 (like Gecko)

Description of problem:
The contents of a tmpfs file system may be paged out.  Paged out memory is 
paged in at swapoff time, while the contents of a tmpfs are discarded when it 
is umounted. 
 
Putting "umount -a -t tmpfs" before the swapoff line in /etc/rc.d/init.d/halt 
can potentially save hundreds of megs of data from being needlessly read from 
disk.  This can save battery on a laptop and will save time on any machine 
while not providing any disadvantage. 
 
If the amount of data stored on the tmpfs file system is greater than the size 
of physical memory then swapoff isn't going to work. 

Version-Release number of selected component (if applicable):
initscripts-8.17-1

How reproducible:
Always

Steps to Reproduce:
1.
2.
3.
  

Additional info:

Comment 1 Miloslav Trma─Ź 2006-02-07 12:46:14 UTC
Fixed in initscripts-8.26-1.  Thanks for your report.