Veritas NetBackup™ Administrator's Guide, Volume II
- NetBackup licensing models and the nbdeployutil utility
- About NetBackup licensing models
- 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 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.
Note:
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.