Seagate ST11200N Technical Information PDF herunterladen (Seite 105)

Utilities to Test SCSI Devices

Set lpfc_check_cond_err to a value of zero. NetBackup is unable to mount tapes if

this variable is left at a value of one.

The use of the touch file /usr/openv/volmgr/AVRD_DEBUG on a system with the

Emulex HBA driver may cause the system log (syslog) to contain many entries that look

like the following. You can ignore these messages.

Unknown drive error on DRIVENAME (device N, PATH) sense[0] = 0x70,

sense[1] = 0x0, sensekey = 0x5

Using Persistent Binding

Persistent bindings should be used to lock the mappings between SCSI Targets reported to

Linux and specific devices. WWPN binding is often used. If binding is not possible with

the HBA in your configuration, then add an ENABLE_AUTO_PATH_CORRECTION entry in

the /usr/openv/volmgr/vm.conf file on all Linux media servers.

Utilities to Test SCSI Devices

You can manipulate tape devices with the system mt command. The man page for MT(1)

explains how to do this.

Robots can be tested using the robtest utility in /usr/openv/volmgr/bin.

There is also a set of SCSI utilities available from the Linux SCSI Generic (sg) driver home

page.

Chapter 6, Enterprise Linux 91

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Seagate ST11200N Technical Information Seite 105