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Top Forums Shell Programming and Scripting shell script to mount filesystem Post 302107179 by sb008 on Thursday 15th of February 2007 02:18:52 AM
Old 02-15-2007
The files under /dev/dsk are block special files, when you do an "ls -l" you will see all line start with a "b".
The files under /dev/rdsk are character special files, when you do an "ls -l" you will see all lines start with a "c".

- regular files
d directory
b block special file
c character special file
l soft link
s socket
p named pipe

Block special files are used for mounting etc.
Character specal files are used for formatting and filesystem check etc

That is why eacht entry in your vfstab contains both the block and character specil file.

You do NOT check filesystems which or NON local disks during boot. If you mount NFS filesystems it is up to the system who exports those filesystems to maintain the integrity. So "fsck pass" should be "no" for NFS fllesystems

For those disks which are checked during boot the number indicates an order.
Those with the lowest number are checked first, next those with the 2nd lowest number, etc

The "/" filesystem should be checked priot to all other filesystems and therefore have the lowest number. A good concept would be whenever you mout a filesystem on another fileystem you increae to number by 1.

Suppose I have 5 filesystems

/
/usr
/var
/opt
/opt/oracle

In this case "/" would get "1"
"/usr", "/var" and "/opt" get "2" since they are mounted on "/"
"/opt/oracle" would get "3" since it is mount on "/opt" which is mounted on "/".

In this scenario "/" would be checked first
Next "/usr", "/var" and "/opt" similtaniously
and last "/opt/oracle"
 

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uudemon(4)						     Kernel Interfaces Manual							uudemon(4)

NAME
uudemon.admin, uudemon.cleanu, uudemon.hour, uudemon.poll - Administrative shell scripts for polling remote systems, cleaning up spool directories, reporting status to the system administrator, and routine invocations of the uuxqt and uusched daemons SYNOPSIS
These shell scripts reside in the following directory: /usr/lib/uucp DESCRIPTION
All the scripts can be run from the command line or can be run automatically by the cron daemon. To automatically run the scripts, remove the comment character (#) from the beginning of the relevant line in the /var/spool/cron/crontabs/uucp file. This script reports status to the system administrator. It issues the uustat command to find out the status of uucp jobs. It mails the results to the uucp login ID. The script may be modified to send mail to any login ID such as the uucp administrative login ID (uucpa) or root. This script cleans up the /var/spool/uucp and /var/spool/uucppublic directories by running the uucleanup command. The uucleanup com- mand is run with the following parameters: -C7, -D7, X2, -o2, -W1. This script runs the uusched and uuxqt daemons in the background. This script polls the systems listed in the /usr/lib/uucp/Poll file. The uudemon.poll script should be scheduled before the uudemon.hour script. This allows uudemon.poll to create any command files before cron runs the uudemon.hour script. FILES
Contains the uudemon.admin, uudemon.cleanu, uudemon.hour and uudemon.poll files. Contains the uucp file. RELATED INFORMATION
Commands: cron(8), uucleanup(8), uusched(8), uuxqt(1) Files: /usr/lib/uucp delim off uudemon(4)
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