Shell Programming and Scripting

Hi Guys

I m posing this new thread as I didnt get satisfactory result after running search here.

My requirement is very simple (using shell script)

I need to findout what all file systems are mounted -> Then I need check the health of that file system - by disk usage & by doing a simple "touch" on that file system whether I am able to read+write on that file system or not.

Thanks a lot to all in advance
Chirantan

Hi All

After some research, I have developed this script ... Guys - Pls let me know how doest this sounds like?

cat /etc/fstab | awk '{ print $2 }' | grep -v swap > /tmp/fs-list

for i in `cat /tmp/fs-list`
do
echo " =================== Printing File System $i ===================== "
ls -ltr $i
done

rm /tmp/fs-list

Thanks a lot

Even if the filesystem isn't mounted your check of it (ls -ltr) will succeed. In other words, the mount *point* probably exists regardless of whether the filesystem is mounted or not.

If you want to find out whether all the filesystems in fstab are mounted, compare the output of df with the filesystems in fstab.

Depending on which OS you are using you can use a 'readonly' fsck to check the filesystem itself.

Generally you can find what filesystems are mounted on what mount-point on your system by going through the /etc/mnttab file. The format for the file differs between systems, so go through the man page of your mnttab file to get the exact format. Once you get this list, you can do your tests (disk usage, touch, etc.)

One point to note is that you can mount a filesystem without making an entry in the /etc/mnttab file. But I dont think that those will be that common.

One question though, why cann't you use the df or similar command to find the mounted filesystems on your system?

just type the mount commmand without any options or the df command to find out all the mounted filesystems...

I hope mount command is not going to harm anything even if all the file systems are properly mounted ... Pls clarify

And if some how I get some errors while mounting any file system then what kind of messages I should look for ( need to incorporate in the script ) so that at the time of problem it can grep for that kind of errors ....

Thanks a lot
Chirantan

just issuing "mount" or "df" will never harm anything... so dont worry anything about it ...

some of the errors u may get while mounting is :
--filesystem does not have permission (in case of NFS)
--no mount point defined...

....etc .... etc....

in case u dont want the errors to show uo on the screen, then redirect the stderr stream to some file and view the file later