Open System Services Management and Operations Guide (G06.27+, H06.04+)

Open System Services Monitor
Open System Services Management and Operations Guide—527191-003
12-46
DIAGNOSE FILESET Command
When the UPGRADE option is specified, you cannot specify the STATUS,
REPAIR, or DOWNGRADE option.
DOWNGRADE
reformats the catalog for the fileset from a current version to an earlier version. For
example, you can downgrade a D40-version catalog to a D30-version catalog to
remove support for symbolic links.
If the DOWNGRADE option is omitted, no downgrade occurs.
When the DOWNGRADE option is specified, you cannot specify the STATUS,
REPAIR, or UPGRADE option.
Considerations
•
You might specify a new processor with the CPU parameter if the processor on
which FSCK normally runs has stopped. You might also specify a particular
processor for load balancing.
•
You cannot use the DIAGNOSE FILESET command on a fileset that is in the
STARTED state (mounted).
•
When the DIAGNOSE FILESET command is used, the fileset is placed in the
DIAGNOSING state until the integrity check is complete. Then the fileset is placed
in the STOPPED state and can be remounted with the SCF START FILESET
command unless serious inconsistencies remain unrepaired.
•
You can use the SCF STATUS FILESET command to determine whether the
integrity check is complete.
•
If FSCK fails, the fileset is placed in the UNKNOWN state.
•
The FSCK utility checks for the inconsistencies listed in Table 5-2 on page 5-29.
•
The DIAGNOSE FILESET command can be used only by super-group users
(255,nnn).
Examples
•
To check the integrity of the fileset USER1, not repair any inconsistencies, and
send informational messages to the file CMDLOG, first use the SCF STOP
FILESET command to stop (unmount) the fileset and then enter the following
command:
DIAGNOSE /OUT CMDLOG/ FILESET USER1
•
To check the integrity of the fileset USER1, repair all inconsistencies, produce a
detailed report, and send informational messages to the file CMDLOG, first use the
Caution. When you downgrade a fileset’s catalog to a D30 version, all symbolic links in that
fileset are removed. Attempts to access files in that fileset through symbolic links from other
filesets will fail.