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Full Discussion: DISK: /dev/hdp query!
Operating Systems AIX DISK: /dev/hdp query! Post 302175463 by bakunin on Friday 14th of March 2008 05:34:17 AM
Old 03-14-2008
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
 

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FDFORMAT(8)						     Linux Programmer's Manual						       FDFORMAT(8)

NAME
fdformat - Low-level formats a floppy disk SYNOPSIS
fdformat [-n] device DESCRIPTION
fdformat does a low level format on a floppy disk. device is usually one of the following (for floppy devices, the major = 2, and the minor is shown for informational purposes only): /dev/fd0d360 (minor = 4) /dev/fd0h1200 (minor = 8) /dev/fd0D360 (minor = 12) /dev/fd0H360 (minor = 12) /dev/fd0D720 (minor = 16) /dev/fd0H720 (minor = 16) /dev/fd0h360 (minor = 20) /dev/fd0h720 (minor = 24) /dev/fd0H1440 (minor = 28) /dev/fd1d360 (minor = 5) /dev/fd1h1200 (minor = 9) /dev/fd1D360 (minor = 13) /dev/fd1H360 (minor = 13) /dev/fd1D720 (minor = 17) /dev/fd1H720 (minor = 17) /dev/fd1h360 (minor = 21) /dev/fd1h720 (minor = 25) /dev/fd1H1440 (minor = 29) The generic floppy devices, /dev/fd0 and /dev/fd1, will fail to work with fdformat when a non-standard format is being used, or if the for- mat has not been autodetected earlier. In this case, use setfdprm(8) to load the disk parameters. OPTIONS
-n No verify. This option will disable the verification that is performed after the format. SEE ALSO
fd(4), setfdprm(8), mkfs(8), emkfs(8) AUTHOR
Werner Almesberger (almesber@nessie.cs.id.ethz.ch) AVAILABILITY
The fdformat command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/. Linux 0.99 1 February 1993 FDFORMAT(8)
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