misc/84752: [patch] 100.clean-disks cleans file systems that don't have files

[Mike Meyer]

>Number:         84752
>Category:       misc
>Synopsis:       [patch] 100.clean-disks cleans file systems that don't have files
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Aug 10 13:30:09 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     Mike Meyer
>Release:        FreeBSD 5.4-STABLE i386
>Organization:
Meyer Consulting
>Environment:
System: FreeBSD bhuda.mired.org 5.4-STABLE FreeBSD 5.4-STABLE #3: Sat Aug 6 22:14:13 EDT 2005 mwm at bhuda.mired.org:/usr/obj/usr/src/sys/BHUDA i386

>Description:

	/etc/peiodic/daily/100.clean-disks cleans out file systems
	that don't have real files in them, like /dev on systems that
	use devfs.

>How-To-Repeat:

	devfs doesn't create any problems, but fdesc does. Mount fdesc
	on /dev/fd (which is where most things expect it), and then
	run 100.clean-disks. I get output like so:
	
Cleaning disks:
find: /dev/fd/3/.w3m: No such file or directory
find: /dev/fd/3/.ssh: No such file or directory
find: /dev/fd/3/.ncftp: No such file or directory
find: /dev/fd/3/.saves-18226-: No such file or directory
find: /dev/fd/3/.k5login: No such file or directory
find: /dev/fd/3/.cshrc: No such file or directory
find: /dev/fd/3/.login: No such file or directory
find: /dev/fd/3/.profile: No such file or directory
find: /dev/fd/3/.history: No such file or directory
find: /dev/fd/3/.saves-33368-guru.mired.org: No such file or directory
find: /dev/fd/3: No such file or directory
find: /dev/fd/4/.w3m: No such file or directory
find: /dev/fd/4/.ssh: No such file or directory
find: /dev/fd/4/.ncftp: No such file or directory
find: /dev/fd/4/.saves-18226-: No such file or directory
find: /dev/fd/4/.k5login: No such file or directory
find: /dev/fd/4/.cshrc: No such file or directory
find: /dev/fd/4/.login: No such file or directory
find: /dev/fd/4/.profile: No such file or directory
find: /dev/fd/4/.history: No such file or directory
find: /dev/fd/4/.saves-33368-guru.mired.org: No such file or directory
find: /dev/fd/4: No such file or directory
find: /dev/fd/5: Bad file descriptor


>Fix:

Ok, I fibbed. The patch isn't here, it's in
http://www.FreeBSD.org/cgi/query-pr.cgi?pr=conf/35545, which includes
a path to add an exclude list to 100.clean-disks. That should be
applied, and daily_clean_disks_exclude should be set to /dev on
systems that mount devfs on /dev by default.



>Release-Note:
>Audit-Trail:
>Unformatted: