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11 troubleshooting failover operation – HP StoreEver MSL6480 Tape Library User Manual

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Enabling data path failover.................................................................................................29
Verifying data path failover.................................................................................................30

7 Configuring failover for other HP StoreEver MSL Tape Libraries.......................31

Configuring data path port failover...........................................................................................31

Enabling data path port failover..........................................................................................31
Verifying data path port failover..........................................................................................31

Configuring basic control path failover......................................................................................32

Enabling control path port failover on the library....................................................................32
Configuration requirements after enabling control path failure..................................................34
Verifying basic control path failover......................................................................................34

8 Installing and using Windows advanced path failover drivers.........................35

Installing the Windows advanced path failover drivers.................................................................35

Downloading and installing the drivers.................................................................................36
Uninstalling drivers.............................................................................................................36

Windows driver theory of operation..........................................................................................36

Driver components.............................................................................................................37

Storage bus filter driver..................................................................................................38
Multi-path intermediate class driver..................................................................................38
Device manager view....................................................................................................40

Device firmware.................................................................................................................42

9 Installing and using Linux advanced path failover drivers...............................43

Installing advanced path failover drivers....................................................................................43
Updating the driver without rebooting.......................................................................................43
Device files............................................................................................................................43
Command line user interface....................................................................................................43

Viewing the current driver revision........................................................................................44
Viewing device status.........................................................................................................44
Setting the preferred path....................................................................................................45
Path rotation exercise function..............................................................................................46

Enabling advanced path failover on a device while the driver is running........................................46
Disabling advanced path failover on a device while the driver is running.......................................46
Linux driver theory of operation................................................................................................46

10 Installing and using HP-UX advanced path failover drivers............................47

Installing advanced path failover drivers....................................................................................47
Commands for viewing tape and library devices connected to a system.........................................47
Finding the lockdown path.......................................................................................................50
Troubleshooting advanced path failover.....................................................................................50
Enabling or disabling advanced path failover............................................................................50

11 Troubleshooting failover operation.............................................................52

Locating a failed path.............................................................................................................52
Windows debugging logs and tools..........................................................................................53

Confirming failover operation..............................................................................................53
Windows system log..........................................................................................................53
Diagnostic application........................................................................................................54

Operation....................................................................................................................54
Actions........................................................................................................................56

Diagnostic dumps..............................................................................................................58

Memory dump setup......................................................................................................59
Driver debug dump setup...............................................................................................59
Bug checks...................................................................................................................59
Hangs.........................................................................................................................59

Linux logs and troubleshooting tools..........................................................................................59

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