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Full Discussion: AIX Free disk space
Operating Systems AIX AIX Free disk space Post 302302684 by kah00na on Tuesday 31st of March 2009 04:03:54 PM
Old 03-31-2009
Think of "PP"s like chunks of space in your volume group. Increases or decreases in the size of your filesystems will occur in your case 128MB at a time. You can't give a filesystem 127MB or 129MB. It will increase or decrease by 128MB because that is your PP size.

It looks like you have 30 gig free.
Code:
FREE PPs: 238 (30464 megabytes)

238 PPs * 128MB PP size = 30464 MB free

Run this command to change the size of your /usr filesystem. I have mine sized around 3 gig. This command sets the /usr to 3 gig:

Code:
chfs -a size=3G /usr

If you want to want to increase, you can do 128MB (or whatever size you want) increases like this:

Code:
chfs -a size=+128M /usr

This just adds 128M to whatever is already there. If you try to increase your /usr by 1MB, it will give it another 128MB because that is your PP size.

Also, to see your filesystem sizes in a format that makes more sense, run "df -Im":

Code:
hostname:/:$ df -Im /usr
Filesystem    MB blocks      Used      Free %Used Mounted on
/dev/hd2        3464.00   2263.11   1200.89   66% /usr

 

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LEARN ABOUT SUNOS

df

df(1B)						     SunOS/BSD Compatibility Package Commands						    df(1B)

NAME

       df - display status of disk space on file systems

SYNOPSIS

       /usr/ucb/df [-a] [-i] [-t type] [filesystem...] [filename...]

DESCRIPTION

       The  df	utility  displays the amount of disk space occupied by currently mounted file systems, the amount of used and available space, and
       how much of the file system's total capacity has been used.

       If arguments to df are path names, df produces a report on the file system containing the named file. Thus  `df	.'  shows  the	amount	of
       space on the file system containing the current directory.

OPTIONS

       The following options are supported:

       -a	       Report on all filesystems including the uninteresting ones which have zero total blocks (that is, auto-mounter).

       -i	       Report the number of used and free inodes. Print ` * ' if no information is available.

       -t type	       Report on filesystems of a given type (for example, nfs or ufs).

EXAMPLES

       Example 1: Using df

       A sample of output for df looks like:

       example% df
       Filesystem   kbytes  used  avail  capacity  Mounted on
       sparky:/       7445  4714  1986	   70%	   /
       sparky:/usr   42277 35291  2758	   93%	   /usr

       Note  that  used+avail  is less than the amount of space in the file system (kbytes); this is because the system reserves a fraction of the
       space in the file system to allow its file system allocation routines to work well. The amount reserved is typically about 10%; this can be
       adjusted  using	tunefs	(see  tunefs(1M)).  When all the space on a file system except for this reserve is in use, only the super-user can
       allocate new files and data blocks to existing files. When a file system is overallocated in this way, df can report that the  file  system
       is more than 100% utilized.

FILES

       /etc/mnttab	       List of file systems currently mounted

       /etc/vfstab	       List of default parameters for each file system

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       du(1), quot(1M), tunefs(1M), mnttab(4), attributes(5)

SunOS 5.10							    14 Sep 1992 							    df(1B)
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