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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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quotacheck_vxfs(1M)													       quotacheck_vxfs(1M)

NAME
quotacheck_vxfs: quotacheck - VxFS file system quota consistency checker SYNOPSIS
filesystem... DESCRIPTION
Because VxFS maintains quota information in the kernel, for VxFS synchronizes quotas from the current system copy to the disk quota file for the specified VxFS file system. requires that each file system it checks has a file named in the root directory. is typically run at mount time from a start-up script. filesystem is a mount point or block special device (e.g., Options recognizes the following options: Check the file systems listed in the file. Checks only mounted type file systems with the option. Specify the file-system type This option does nothing, but exists for standards compatibility. Report the file system name before synchronizing quotas from current system copy to the disk quota file. Echo the completed command line, but do not execute the command. The command line is generated by incorporating the user-specified options and other information derived from If the options are not valid, prints an error message. This option allows the user to verify the command line. Operands recognizes the following operand: filesystem A mount point or block special device AUTHOR
was developed by HP and the University of California, Berkeley. FILES
Default file systems Quota statistics static storage for file system where root_directory is the file system root as specified to (see mount(1M)). SEE ALSO
mount(1M), mount_vxfs(1M), quotacheck(1M), quota(5). quotacheck_vxfs(1M)
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