fs_setcachesize - Sets the size of the disk cache
fs setcachesize [-blocks <size in 1K byte blocks (0 = reset)>>]
fs setca [-b <size in 1K byte blocks (0 = reset)>>]
fs cachesize [-b <size in 1K byte blocks (0 = reset)>>]
fs ca [-b <size in 1K byte blocks (0 = reset)>>]
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 /etc/openafs/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
To display the current cache size and amount of cache in use, for both
disk and memory caches, use the fs getcacheparms command.
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
-blocks <size in 1K byte blocks>
Specifies the number of one-kilobyte blocks of disk space available
for the Cache Manager to devote to the cache. Provide a value of 0
to set cache size to the default specified in the cacheinfo file.
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.
Prints the online help for this command. All other valid options
The following command sets the disk cache size to 25000 kilobyte
% 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
The issuer must be logged in as the local superuser root.
cacheinfo(5), afsd(8), fs_getcacheparms(1)
IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.
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