AIX

Hi looking for a little advice..What are the implication of DISK: /dev/hdp filling to 100% . Have no experiece with Unix so looking for a little guidance. I'm a windows admin and have inherited two IAX servers. Both of which are monitored via MOM. One has started reporting the below error.

DISK: /dev/hdp: space used %: value = 90.5

Unlike windoze, which has different "drives" (a:, b:, etc.) UNIX - AIX is no exception - has a strictly hierarchical file system. Different disks ("partitions" in your wording) are "mounted" into one hierarchy and the user doesn't have to care which disk he is accessing. Changing from one directory to another could mean changing from one disk to another. In Windoze you would "net use" a "share" and end up using it as a new drive letter. In UNIX the analogous process would be to create a directory somewhere, "mount" the drive and then see its contents below this subdirectory.

OK, after this "cultural indoctrination" to your problem at hand: one of these "disks" is filling up and currently at 90.5% full. Issue a "df -k" to see which file systems are mounted and how much they are filled. The figures, unless otherwise stated, are in KBs.

Some filesystems contain rather static data (/usr for instance) and it doesn't matter if they are nearly full. Others hold widely varying amounts of temporary data and they have to have lots of free space for the system to work fine. If you have questions about to which group a specific filesystem belongs just ask.

AIX features a "logical volume manager", which is a bit too complex to explain for that problem. Suffice it to say that you can - even without unmounting - dynamically resize your mounted disks. Here is how:

Find out which filesystem the logical volume /dev/hdp belongs to:

Code:

df -k

With this knowledge follow the procedure here

If things are still unclear don't be shy to ask.

bakunin