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Top Forums UNIX for Dummies Questions & Answers /tmp filesystem full Post 78267 by bakunin on Monday 18th of July 2005 10:38:31 AM
Old 07-18-2005
In AIX you could use "topas", which is from the package bos.perf.tools.

Issue "lslpp -l bos.perf.tools" to see which version of this fileset is installed if any and invoke it with "topas".

Alternatively you could use "nmon", which is similar to topas, but not officially supported by IBM. Another alternative would be "monitor", which is also not officially supported, but can be downloaded from the Bull-site. Invoke it with "monitor -top". At least one of these tools should be installed on every system. If it isn't - hang your SysAdmin to the next lantern pole for proven indolence.

I can assure you the machine *will* survive a reboot even with a full /tmp filesystem, there will be no problems because of this.

The .map-files are presumably ASCII files containing the layout of the logical volumes (more or less: filesystems) on the disks. Delete them, you can easily create them anew with "lslv -Lm <LVname> [> <file>]".

If you have to increase the size of the /tmp-filesystem:

Issue "lsvg rootvg" to get the PP size (in the right column near the top). You can increase the size in multitudes of this unit. Lets say it is 32MB. If you want to add 128 MB to the filesystem you will have to add 4 such partitions (4x32=128). Don't care about mirroring or so, this is handled by the logical volume manager automatically. Per default /tmp is on the LV hd3. Issue

Code:
# extendlv hd3 4

This will increase LV hd3 by adding 4 logical partitions (if the LV is mirrored this would add 8 partitions physically on different disks, yielding 4 partitions logically, or even 12 PPs on 3 disks if there are two copies).

Now that you have increased the LV you need to increase the FS to make use of the additional room. This time you have to specify the space in blocks, which are 512 Bytes big. First we calculate how many blocks the 128 MB are:

Code:
# print - "4*32*1024*2" | bc
262144

The result is used to increase the filesystem:

Code:
# chfs -a size=+262144 /tmp

The filesystem is now increased by 128 MB. Don't bother to umount the FS, this is not necessary. You can do all that while the applications are running without any problem.

Hope this helps.

bakunin
 

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Sys::Filesystem::Aix(3pm)				User Contributed Perl Documentation				 Sys::Filesystem::Aix(3pm)

NAME
Sys::Filesystem::Aix - Return AIX filesystem information to Sys::Filesystem SYNOPSIS
See Sys::Filesystem. INHERITANCE
Sys::Filesystem::Aix ISA UNIVERSAL METHODS
version () Return the version of the (sub)module. ATTRIBUTES
The following is a list of filesystem properties which may be queried as methods through the parent Sys::Filesystem object. account Used by the dodisk command to determine the filesystems to be processed by the accounting system. boot Used by the mkfs command to initialize the boot block of a new filesystem. check Used by the fsck command to determine the default filesystems to be checked. dev Identifies, for local mounts, either the block special file where the filesystem resides or the file or directory to be mounted. free This value can be either true or false. (Obsolete and ignored). mount Used by the mount command to determine whether this file system should be mounted by default. nodename Used by the mount command to determine which node contains the remote filesystem. size Used by the mkfs command for reference and to build the file system. type Used to group related mounts. vfs Specifies the type of mount. For example, vfs=nfs specifies the virtual filesystem being mounted is an NFS filesystem. vol Used by the mkfs command when initializing the label on a new filesystem. The value is a volume or pack label using a maximum of 6 characters. log The LVName must be the full path name of the filesystem logging logical volume name to which log data is written as this file system is modified. This is only valid for journaled filesystems. SEE ALSO
Sys::Filesystem Example /etc/filesystems * @(#)filesystems @(#)29 1.22 src/bos/etc/filesystems/filesystems, cmdfs, bos530 9/8/00 13:57:45 * IBM_PROLOG_BEGIN_TAG * This is an automatically generated prolog. * * <snip> * * This version of /etc/filesystems assumes that only the root file system * is created and ready. As new file systems are added, change the check, * mount, free, log, vol and vfs entries for the appropriate stanza. /: dev = /dev/hd4 vol = "root" mount = automatic check = false free = true vfs = jfs2 log = /dev/hd8 type = bootfs /proc: dev = /proc vol = "/proc" mount = true check = false free = false vfs = procfs /scratch: dev = /dev/fslv02 vfs = jfs2 log = INLINE mount = true account = false Example /usr/sbin/mount output node mounted mounted over vfs date options -------- --------------- --------------- ------ ------------ --------------- /dev/hd4 / jfs2 Mar 24 12:14 rw,log=/dev/hd8 /proc /proc procfs Mar 24 12:15 rw /dev/fslv02 /scratch jfs2 Mar 24 12:15 rw,log=INLINE filesystems(4) Manpage includes all known options, describes the format and comment char's. VERSION
$Id: Aix.pm 128 2010-05-12 13:16:44Z trevor $ AUTHOR
Nicola Worthington <nicolaw@cpan.org> - <http://perlgirl.org.uk> Jens Rehsack <rehsack@cpan.org> - <http://www.rehsack.de/> COPYRIGHT
Copyright 2004,2005,2006 Nicola Worthington. Copyright 2008-2010 Jens Rehsack. This software is licensed under The Apache Software License, Version 2.0. <http://www.apache.org/licenses/LICENSE-2.0> perl v5.10.1 2010-05-18 Sys::Filesystem::Aix(3pm)
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