JFS initialization parameters¹

Parameter	Description
pathname	Specifies that pathname of the JFS IFS
/CACHE:<size in kilobytes>	Specifies the size of the JFS buffer cache in Kilobytes. By default, this size is set to 12.5 percent of real memory.
/AUTOCHECK:drive[drive...]]	Specifies a list of JFS file systems, identified by drive letter, to be included in automatic recovery by CHKDSK at the time of JFS initialization. If an asterisk (*) is specified instead of a drive letter list, all JFS file systems will be included in automatic recovery during JFS initialization. If any drive letter is preceded by an arithmetic plus sign (+), CHKDSK will perform a full integrity check on the drive even if journal log replay has restored the drive to an apparently consistent state. If the list of drive letters ends with a plus-asterisk (+*), CHKDSK will perform a full integrity check on all JFS file systems not specified in the list even if journal log replay has restored them to an apparently consistent state.
/L:OFF	Specifies the lazy write parameters in seconds. OFF forces all to be synchronous.
/L:<synctime,maxage,bufferidle>	Synctime is the interval at which the sync thread runs, default=32. Maxage is the longest time that a modified file is kept in cache, default is synchtime*4. Bufferidle is the time indicating a "recent" change. Changes newer than this value are not written unless the last write was older than maxage, default is Min(1,synchtime/8)

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