MPE/iX System Utilities Reference Manual (32650-90908)

Chapter 9
FSCHECK
Operation
105
CHECKEXTENTS [CE]
The CHECKEXTENTS command checks the extent map for each file label in the label table for duplicate extent
descriptors. Duplicate extent descriptors are those with overlapping file sector offset.
Syntax
ldev
CHECKEXTENTS [DEV=] set_name
ALL
Parameters
The DEV parameter is optional. If omitted, the default is to check the extent maps on each mounted volume of
the system volume set.
ldev Ldev is a number from 1 to 32767, specifying the logical device on which the volume is
mounted. The volume must be mounted in the MASTER or MEMBER state as displayed by
the DSTAT command
set_name Set_name is the name of a mounted volume set whose master volume is mounted in the
MASTER state as determined by the DSTAT command. The extent map check is performed
on each mounted volume of the set.
ALL ALL checks the extent maps on each volume mounted in the MASTER or MEMBER state.
Example
fscheck: CHECKEXTENTS ALL
Return