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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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mount_pcfs(1M)						  System Administration Commands					    mount_pcfs(1M)

NAME
mount_pcfs - mount pcfs file systems SYNOPSIS
mount -F pcfs [generic_options] [-o FSType-specific_options] special | mount_point mount -F pcfs [generic_options] [-o FSType-specific_options] special mount_point DESCRIPTION
mount attaches an MS-DOS file system (pcfs) to the file system hierarchy at the mount_point, which is the pathname of a directory. If mount_point has any contents prior to the mount operation, these are hidden until the file system is unmounted. If mount is invoked with special or mount_point as the only arguments, mount will search /etc/vfstab to fill in the missing arguments, including the FSType-specific_options; see mount(1M) for more details. The special argument can be one of two special device file types: o A floppy disk, such as /dev/diskette0 or /dev/diskette1. o A DOS logical drive on a hard disk expressed as device-name:logical-drive , where device-name specifies the special block device-file for the whole disk and logical-drive is either a drive letter (c through z) or a drive number (1 through 24). Examples are /dev/dsk/c0t0d0p0:c and /dev/dsk/c0t0d0p0:1. The special device file type must have a formatted MS-DOS file system with either a 12-bit, 16-bit, or 32-bit File Allocation Table. OPTIONS
generic_options See mount(1M) for the list of supported options. -o Specify pcfs file system specific options. The following options are supported: foldcase|nofoldcase Force uppercase characters in filenames to lowercase when reading them from the filesystem. This is for compatibility with the pre- vious behavior of pcfs. The default is nofoldcase. FILES
/etc/mnttab table of mounted file systems /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 |SUNWesu | +-----------------------------+-----------------------------+ SEE ALSO
mount(1M), mountall(1M), mount(2), mnttab(4), vfstab(4), attributes(5), pcfs(7FS) NOTES
If the directory on which a file system is to be mounted is a symbolic link, the file system is mounted on the directory to which the sym- bolic link refers, rather than on top of the symbolic link itself. SunOS 5.10 24 Nov 2003 mount_pcfs(1M)
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