FS_SETCACHESIZE(1) AFS Command Reference FS_SETCACHESIZE(1)NAMEfs_setcachesize - Sets the size of the disk cache
SYNOPSIS
fs setcachesize [-blocks <size (0 = reset)>>] [-reset] [-help]
fs setca [-b <size (0 = reset)>>] [-r] [-h]
fs cachesize [-b <size (0 = reset)>>] [-r] [-h]
fs ca [-b <size (0 = reset)>>] [-r] [-h]
DESCRIPTION
The fs setcachesize command changes the number of kilobyte blocks of
local disk space available to the Cache Manager for its data cache, on
machines that use a disk cache. The command is not operative on
machines that use a memory cache.
To return the cache size to the default value specified in the third
field of the local /usr/vice/etc/cacheinfo file, provide a value of 0
to the -blocks argument.
To return the cache size to the value set when the machine was last
rebooted, use the -reset flag instead of the -blocks argument. This is
normally the amount specified in the cacheinfo file, unless the -blocks
argument was included on the afsd command to override the cacheinfo
value.
To display the current cache size and amount of cache in use, for both
disk and memory caches, use the fs getcacheparms command.
CAUTIONS
This command is not operative on machines using a memory cache, and
results in an error message. To change memory cache size, edit the
cacheinfo file and reboot, or reboot and provide the -blocks argument
to the afsd command.
On machines using a disk cache, do not set the cache size to exceed 85%
to 90% of the actual disk space available for the cache directory. The
cache implementation itself requires a small amount of space on the
partition.
OPTIONS-blocks <size>
Specifies the amount of disk space available for the Cache Manager
to devote to the cache. The size should be a positive integer
followed by an optional suffix: "K" for kibibytes (1024 bytes, the
default), "M" for mebibytes (1024 kibibytes), "G" for gibibytes
(1024 mebibytes), and "T" for tebibytes (1024 gibibytes). Provide
a value of 0 to set cache size to the default specified in the
cacheinfo file.
-reset
Returns the cache size to the value set when the machine was last
booted. This agrees with the value in the cacheinfo file unless the
-blocks argument was used on the afsd command.
-help
Prints the online help for this command. All other valid options
are ignored.
EXAMPLES
The following command sets the disk cache size to 25000 kilobyte
blocks.
% fs setcachesize -blocks 25000
Both of the following commands reset the disk cache size to the value
in the cacheinfo file, assuming that the -blocks argument to the afsd
command was not used.
% fs setcachesize -blocks 0
% fs setcachesize -reset
PRIVILEGE REQUIRED
The issuer must be logged in as the local superuser root.
SEE ALSOcacheinfo(5), afsd(8), fs_getcacheparms(1)COPYRIGHT
IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.
This documentation is covered by the IBM Public License Version 1.0.
It was converted from HTML to POD by software written by Chas Williams
and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.
OpenAFS 2013-10-09 FS_SETCACHESIZE(1)
