Consignation du systeme de fichiers CacheFS

SYNOPSIS
cachefslog -f logfile   cachefs_mount_point
OPTIONS
     -f logfile

           Specifie le fichier de consignation.
     -h    Pour arreter la consignation.

mkdir -p /var/cachelogs

cachefslog -f /var/cachelogs/cdrom_cache.log /cdrom

/var/cachelogs/cdrom_cache.log : /cdrom

ls -l /var/cachelogs/

total 2

 rw-r—r—   1 root     other         28 Jul 30 18:22 cdrom_cache.log

Pour connaître le nom du fichier de cache :

cachefslog /cdrom/
/var/cachelogs/cdrom_cache.log :
/cdrom/

connaître la taille du cache :
cachefswssize /var/cachelogs/cdrom_cache.log 
    total for cache

           initial size :             16376k

               end size :                 0k

        high water size :                 0k

Renommee le nom du journal de cache :

cachefslog -f /var/cachelogs/cdrom_cache-new.log /cdrom

cachefsstat /cdrom/
    /cdrom

                 cache hit rate :    49% (35 hits, 36 misses)

             consistency checks :      0 (0 pass, 0 fail)

                       modifies :      0

             garbage collection :      0

Man de cachefsstat :
System Administration Commands                    cachefsstat(1M)
NAME

     cachefsstat - Cache File System statistics
SYNOPSIS

     /usr/bin/cachefsstat [-z] [path...]
DESCRIPTION

     The cachefsstat  command  displays  statistical  information

     about the cache file system mounted on path. The statistical

     information includes  cache  hits  and  misses,  consistency

     checking, and modification operations. If path is not speci-

     fied, all mounted cache file systems are used.
     cachefsstat can also be used to reinitialize  this  informa-

     tion (see -z option).
     The statistical information has the following format :
     where :
     hit rate

           The percentage of cache hits over the total number  of

           attempts, followed by the

            actual numbers of hits and misses.
     consistency checks

           The number of consistency checks  performed,  followed

           by the number that passed, and the number that failed.
     modifies

           The number of  modify  operations,  including  writes,

           creates, etc.
OPTIONS

     The following option is supported :
     -z    Zero (reinitialize) statistics. Execute cachefsstat -z

           before  executing  cachefsstat again to gather statis-

           tics on the cache performance. This option  can   only

           be  use  by  the  superuser.  The  statistics  printed

           reflect those just  before the statistics  are  reini-

           tialized.
USAGE

     See largefile(5) for the  description  of  the  behavior  of

     cachefsstat when encountering files greater than or equal to

     2 Gbyte ( 2**31 bytes).
EXAMPLES

     Example 1 : Example of cachefsstat.
     example% cachefsstat /home/sam cache hit  rate :   73%  (1234

     hits,  450  misses)  consistency  checks :  700 (650 pass, 50

     fail) modifies :  321
EXIT STATUS

     The following exit values are returned :
     0     success
     non-zero

           an error has occurred.