Tmf fallback considerations, Using multiple tmf audit trails with smf, Tmf shutdown and initialization – HP NonStop G-Series User Manual
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Preparing to Use SMF
HP NonStop Storage Management Foundation User's Guide—523562-008
2-2
TMF Fallback Considerations
need only to rebind code. The physical file name is not available through the public
audit reading routines.
TMF Fallback Considerations
Due to the change in TMF audit records described under
page 2-1, you must note special considerations for D-series installations that must
preserve TMF recovery (volume or file) in the event of a fallback to a prior release.
These considerations do not apply to G-series RVUs or to D42 or later D-series RVUs,
all of which support the audit record changes. Installations that fall back to D20 or
earlier RVUs cannot preserve recovery protection across this transition. Protected
fallback to a D30 release is possible, provided that a version of TMF has been installed
that supports the new audit record format.
Using Multiple TMF Audit Trails With SMF
You can configure some installations with multiple TMF audit volumes. When
configuring SMF and TMF to protect logically named files, consider the following:
Storage pools can be configured to contain only physical volumes audited by TMF,
only physical volumes that are not audited by TMF, or a combination of audited and
nonaudited volumes.
If you are using multiple audit trails, all audited physical volumes in a storage pool
must be configured to the same audit trail. If you add a disk whose audit trail index
is different, SMF will allow this but will display a warning. Virtual disk processes will
not place any audited files on the disk whose audit trail index is different.
(Unaudited files will be created successfully.) Because you can dynamically
change TMF audit locations, you must make sure to maintain a single audit trail for
a storage pool(s).
When you add the first audited volume to a pool, the Pool process retains the audit trail
index of that volume in its configuration information. When you add more audited disks
to the pool, the Pool process compares their audit trail indexes to the one it set based
on the first disk. If you attempt to create an audited file on a disk with a different audit
trail index by specifying the PHYSVOL option, it will fail with an error 5014.
TMF Shutdown and Initialization
If you perform a TMF shutdown operation, SMF catalog files cannot be updated. In this
condition, only operations such as SMF informational requests and attempts to read
logical files are permitted. Any attempts to create, purge, or modify files, as well as
attempts to reconfigure SMF will fail. Restarting TMF corrects the problem and restores
SMF to normal operation.
Note. Always shut down SMF before TMF. See
for more information.