Manual Reference Pages - FS_SETCACHESIZE (1)
fs_setcachesize - Sets the size of the disk cache
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]
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/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
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 partition.
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.
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 are
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
The issuer must be logged in as the local superuser root.
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|OpenAFS ||FS_SETCACHESIZE (1) ||2015-10-28 |
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