>Number:         4372
>Category:       bin
>Synopsis:       init creates mfs to small for /dev
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people (Utility Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Oct 28 13:05:02 1997
>Last-Modified:
>Originator:     Andreas Wrede
>Organization:
Planix, Toronto, Ontario, Canada
>Release:        -current Oct 28, 1997
>Environment:
	
System: NetBSD wbook 1.3_ALPHA NetBSD 1.3_ALPHA (GENERIC) #2: Fri Oct 28 13:13:35 EDT 1997 root@woffi:/local1/src/netbsd-current/src/sys/arch/i386/compile/GENERIC i386

>Description:
	
Init uses mount_mfs to create a memory filesystem for /dev when the root 
partition is mounted on a msdos fs and there is a file MAKEDEV in /dev. The 
filesystem is created with to few inodes to accomodate all the devices 
created by a 'MAKEDEV all'.

>How-To-Repeat:
>Fix:
	
The patch below causes init to create a filesystem with 700+ inodes and
67bk space. 'MAKEDEV all' uses 446 inodes and 18kb blocks.

*** src/sbin/init/init.c.orig	Wed Jul 30 07:41:50 1997
--- src/sbin/init/init.c	Tue Oct 28 13:39:40 1997
***************
*** 1395,1402 ****
  	/* Mount an mfs over /dev so we can create devices */
  	switch ((pid = fork())) {
  	case 0:
! 		(void) execl("/sbin/mount_mfs", "mount_mfs", "-i", "18000",
! 		    "-s", "192", "-b", "4096", "-f", "512", "swap", "/dev",
  		    NULL);
  		goto done;
  
--- 1395,1402 ----
  	/* Mount an mfs over /dev so we can create devices */
  	switch ((pid = fork())) {
  	case 0:
! 		(void) execl("/sbin/mount_mfs", "mount_mfs", "-i", "256",
! 		    "-s", "384", "-b", "4096", "-f", "512", "swap", "/dev",
  		    NULL);
  		goto done;
  
>Audit-Trail:
>Unformatted:
The memory filesystem created by init to accomodate /dev when / is on 
a msdos partition is to small.
>Howo-To-Repeat:
	<code/input/activities to reproduce the problem (multiple lines)>
Copy dosboot.com, /bin/*, /sbin/*, /dev/MAKEDEV and /netbsd to a msdos 
partition. Run 'dosboot netbsd' from a dos command prompt. Observe many 
'out of inode' messages.