vollogcnvt - Logical Storage Manager BCL-to-DRL logging conversion utility
/usr/sbin/vollogcnvt [-g diskgroup]
Limits the conversion of logging subdisks to volumes in the specified
The vollogcnvt utility is a migration tool for Logical Storage Manager
(LSM) administrators who are using the Block-Change Logging (BCL) feature.
In the Version 5.0 release of Tru64 UNIX, the BCL feature of LSM was
replaced with the Dirty-Region Logging (DRL) feature.
The vollogcnvt utility attempts to convert volumes with BCL enabled to
volumes with DRL enabled. If called without specifying a disk group, vol-
logcnvt attempts the BCL-to-DRL conversion for all volumes across all disk
If logging cannot be re-enabled in the DRL scheme, a message is sent to the
For volumes whose BCL subdisks will not work in the DRL scheme, logging is
Log subdisks that cannot be converted to DRL are dissociated from their
volumes only if at least one of the log subdisks for the volume is con-
verted. Otherwise, the configuration does not change and logging is dis-
abled. Volumes that cannot be converted, for example, because all their log
subdisks are too small, will have logging disabled.
At system startup, the vollogcnvt utility runs automatically and logs
errors to binlog and sends mail to root. This happens at each reboot until
the DRL is manually converted or when logging is disabled. If the utility
runs at startup or manually, a message is sent to the console.
For details and guidelines on using DRL, refer to the Logical Storage