Splitting Configuration Parameters and Behavior

This table describes the configuration parameters that affect splitting, the relevant conditions for a particular dump, and the results. It does so both for the old parameters and the new. Notes that the new parameters are only used if none of the old parameters appear in the dumptype. See the key, below, for more information

Key

parameters

?

parameter is ignored

-

parameter is not given in amanda.conf

0

parameter has zero value

888 or 999

parameter has nonzero value

/...

a valid value for split_diskbuffer

inval

in invalid value for split_diskbuffer (nonexistent, or less than tape_splitsize bytes available)

results

888 or 999

part size from the corresponding parameter

10M

default fallback_splitsize of 10M

∞

no splitting (LEOM devices will still successfully span from volume to volume; others will fail if they hit EOM)

Old (dumptype) Configuration Parameters

condition	configuration			result
	tape splitsize	split diskbuffer	fallback splitsize	part size	caching
FILE_WRITE	-	?	?	∞	none
	0	?	?	∞	none
	999	?	?	10M	none
PORT_WRITE no LEOM	-	?	?	∞	none
	0	?	?	∞	none
	999	-	-	10M	memory
	999	-	0	10M	memory
	999	-	888	888	memory
	999	inval	-	10M	memory
	999	inval	0	10M	memory
	999	inval	888	888	memory
	999	/...	?	999	disk
PORT_WRITE LEOM	-	?	?	∞	none
	0	?	?	∞	none
	999	-	-	10M	none
	999	-	0	10M	none
	999	-	888	888	none
	999	inval	-	10M	none
	999	inval	0	10M	none
	999	inval	888	888	none
	999	/...	?	999	none