Red Hat

Hi All
I am newbie to RED HAT and I am trying to check the disk space I have available doing "df -h".

The result is reported below.
Do you know how to understand which line is the one telling how many Gb remain in my physical hard disk?
I know that probably my Network Admin mounted something as using some networked kind of disk but I don't know how to reckon it readnig these lines.
Is there any specific command giving me this information
Thanks all
MNST

Code:

Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                       71G   27G   40G  41% /
/dev/sda1              99M   11M   83M  12% /boot
tmpfs                1005M     0 1005M   0% /dev/shm
netapp2:/vol/vol1     356G  258G   99G  73% /mnt/vol1

The top columns explain it for you.

Size is the total size of the disk/volume. Used is the amount you subtract from the size. Avail is that figure, with the math done for you, so in your case:


/dev/mapper/VolGroup00-LogVol00 corresponds to your / or (root) directory

It is 71GB and you have used 27GB. You have used 41% and have 40GB remaining.

Also, realize that while df -h is more readable, the numbers are slightly rounded as there is more precision in smaller increments.

Should you be interested in finding what files themselves are taking up space, please look up "du"

Also, there are some debates about this, but you have carved up a volume group into a logical volume with a single mount point (excluding /boot, which can't go onto the logical volume). This is simple, but gives you some issues if a single process or directory fills up, it fills the entire disk.

You should be ok, as if you did this as a normal install, EXT3 (the file system most commonly used) will allocate 5% of the disk as unusable to all except root for just this type of occurrence.


This line:
netapp2:/vol/vol1 356G 258G 99G 73% /mnt/vol1

is what your Network Admin probably mounted. This is a remote file system attached to your device named "netapp2" and provides an additional 356GB, of which 73% is used, so you have 99GB free.

- when you find a name in the "Filesystem" column of `df' that has a colon (':'), it indicates an NFS (Networked File System) mounted on your host ;

- by the output of `df' you posted, I'd say

Code:

netapp2:/vol/vol1     356G  258G   99G  73% /mnt/vol1

is an NFS ;

good luck, and success !

alexandre botao
<< botao {dot} org >>