Veritas NetBackup™ Administrator's Guide, Volume II
- NetBackup licensing models and the nbdeployutil utility
- About NetBackup licensing models
- About the capacity licensing model
- nbdeployutil utility options
- Creating and viewing the licensing report
- After creating a traditional licensing report
- After creating a capacity licensing report
- Reconciling the capacity licensing report results
- Additional configuration
- About dynamic host name and IP addressing
- About busy file processing on UNIX clients
- About the Shared Storage Option
- About configuring the Shared Storage Option in NetBackup
- Viewing SSO summary reports
- About the vm.conf configuration file
- Holds Management
- Menu user interfaces on UNIX
- About the tpconfig device configuration utility
- About the NetBackup Disk Configuration Utility
- Reference topics
- Host name rules
- About reading backup images with nbtar or tar32.exe
- Factors that affect backup time
- NetBackup notify scripts
- Media and device management best practices
- About TapeAlert
- About tape drive cleaning
- How NetBackup reserves drives
- About SCSI persistent reserve
- About the SPC-2 SCSI reserve process
- About checking for data loss
- About checking for tape and driver configuration errors
- How NetBackup selects media
- About selecting media in robots
- About selecting media in standalone drives
- About Tape I/O commands on UNIX
Breaking a reservation
If you cannot release an SPC-2 SCSI reservation, try to use an operating system command that forces a device reset. A device reset breaks a reservation. The procedure depends on the operating system type.
The reset operation can reset other devices in the configuration. Loss of data is also possible. Try alternate methods first to break the reservation on a device (by using switch and bridge hardware).
Lastly, if the following operating system commands cannot break the reservation, power-cycle the drive. A power cycle breaks SPC-2 SCSI drive reservations (and usually breaks SCSI persistent drive reservations).
To break an SPC-2 reservation on Solaris
- Issue mt -f drive_path_name forcereserve.
- Issue mt -f drive_path_name release.
See the mt(1) man page for more information.
To break an SPC-2 reservation on HP-UX
- Issue st -f drive_path_name -r.
See the st(1m) man page for more information.
To break an SPC-2 reservation on AIX
- Issue tctl -f drive_path_name reset.
See the tctl man page (in the IBM AIX Commands Reference) for more information.