Bug 22602

Summary: CDRoms checked during shutdown (umount)
Product: Base System Reporter: rbt <rbt>
Component: kernAssignee: freebsd-bugs (Nobody) <bugs>
Status: Closed FIXED    
Severity: Affects Only Me    
Priority: Normal    
Version: 4.1.1-STABLE   
Hardware: Any   
OS: Any   

Description rbt 2000-11-04 13:30:01 UTC 
CDRoms are scanned during umount.  You can notice activity during this process.

/dev/acd0c              /export/cdrom/0 cd9660  ro,noauto       0       0

It's my believe that a read only mount shouldn't need to be checked before unmounting it.

How-To-Repeat: Mount a cdrom, then umount it while watching for activity.  Especially noticible on cdrom changers as they have to switch disks.

In my case, shutdown takes an extra 30 seconds while the cdrom drives are unmounted.
Comment 1 iedowse freebsd_committer freebsd_triage 2002-08-11 22:25:31 UTC 
State Changed
From-To: open->closed


I presume that this access is necessary in order to unlock the tray 
so that you can eject the CD after it has been unmounted.