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Full Discussion: bash script to check if mounted, and mount if not
Top Forums Shell Programming and Scripting bash script to check if mounted, and mount if not Post 302293696 by unSpawn on Tuesday 3rd of March 2009 04:07:39 PM
Old 03-03-2009
Quote:
Originally Posted by graysky
1) Check to see if the mount is active
For this you could use 'grep'. But not for output, just the exit value (meaing "$?"). Check /proc/mounts. Mount a directory. Check /proc/mounts again. Try to grep the mounted partition line from /proc/mounts.


Quote:
Originally Posted by graysky
2) If it's not active, try to mount it
You know the mount command, right? So if the previous 'grep' fails you could use the exit value as cue to mount it. To test the mount bit you could use a command that always outputs exit value 1: 'false'. Test it with 'false || echo doSomething; false && echo doSomethingElse'. You'll see.


Quote:
Originally Posted by graysky
3) If it won't mount because the nfs server is down, wait 45 s then try again looping indefinitely until the nfs server is up
"Wait" here means 'sleep'. Try 'man sleep' to find out how to use it. Again you can use a "negative" (in shell) exit value.


Quote:
Originally Posted by graysky
4) Once the mount is active, run a program and exit
Same here: use the exit value.

Here's some Bash scripting guides that will help you glue those things together if you like: BASH Programming - Introduction HOW-TO, Bash Guide for Beginners,
Advanced Bash-Scripting Guide.

Once you have something to test out, posting it in code tags would make things easier in case things went awry somewhere.
 

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LEARN ABOUT SUSE

mount.nfs

MOUNT.NFS(8)						      System Manager's Manual						      MOUNT.NFS(8)

NAME

       mount.nfs, mount.nfs4 - mount a Network File System

SYNOPSIS

       mount.nfs remotetarget dir [-rvVwfnsh ] [-o options]

DESCRIPTION

       mount.nfs is a part of nfs(5) utilities package, which provides NFS client functionality.

       mount.nfs  is  meant to be used by the mount(8) command for mounting NFS shares. This subcommand, however, can also be used as a standalone
       command with limited functionality.

       mount.nfs4 is used for mounting NFSv4 file system, while mount.nfs is used to mount NFS file systems versions 3 or 2.   remotetarget  is  a
       server share usually in the form of servername:/path/to/share.  dir is the directory on which the file system is to be mounted.

OPTIONS

       -r     Mount file system readonly.

       -v     Be verbose.

       -V     Print version.

       -w     Mount file system read-write.

       -f     Fake mount. Don't actually call the mount system call.

       -n     Do not update /etc/mtab.	By default, an entry is created in /etc/mtab for every mounted file system. Use this option to skip making
	      an entry.

       -s     Tolerate sloppy mount options rather than fail.

       -h     Print help message.

       nfsoptions
	      Refer to nfs(5) or mount(8) manual pages.

NOTE

       For further information please refer nfs(5) and mount(8) manual pages.

FILES

       /etc/fstab	 file system table

       /etc/mtab	 table of mounted file systems

SEE ALSO

       nfs(5), mount(8),

AUTHOR

       Amit Gud <agud@redhat.com>

								    5 Jun 2006							      MOUNT.NFS(8)
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