Bridged Libraries - Netbackup SG Driver Fails to Attach to Media Changer When Solaris mpxio is Enabled (Doc ID 1320623.1)

Last updated on DECEMBER 07, 2016

Applies to:

Sun StorageTek SL48 Tape Library - Version Not Applicable to Not Applicable [Release N/A]
Sun StorageTek SL500 Modular Library System - Version Not Applicable to Not Applicable [Release N/A]
Sun StorageTek SL24 Tape Autoloader - Version Not Applicable to Not Applicable [Release N/A]
StorageTek SL150 Modular Tape Library - Version All Versions and later
Sun StorageTek Auto Cartridge Sys Lib SW (ACSLS) High Availability - Version 8.1 to 8.1 [Release 8.0]
Oracle Solaris on x86-64 (64-bit)
Oracle Solaris on SPARC (64-bit)

Symptoms

Backup application no longer detects the robot.  Robot going offline.

Media changer shows up under /dev/scsi/changer with scsi_vhci in device path.

Sample:

/dev/scsi/changer: lrwxrwxrwx 1 root root 57 May 6 19:54 c5t50014380032CAA28d0 -> ../../../devices/scsi_vhci/sgen@g50014380032caa28:changer

May 6 19:52:13 sworks qlc: [ID 630585 kern.info] NOTICE: Qlogic qlc(10): Link OFFLINE
May 6 19:54:18 sworks qlc: [ID 630585 kern.info] NOTICE: Qlogic qlc(10): Loop ONLINE
May 6 19:54:18 sworks scsi: [ID 799468 kern.info] sgen0 at scsi_vhci0: name g50014380032caa28, bus address g50014380032caa28
May 6 19:54:18 sworks genunix: [ID 936769 kern.info] sgen0 is /scsi_vhci/sgen@g50014380032caa28
May 6 19:54:18 sworks mpxio: [ID 669396 kern.info] /scsi_vhci/sgen@g50014380032caa28 (sgen0) multipath status: degraded, path /ssm@0,0/pci@1f,700000/SUNW,qlc@2/fp@0,0 (fp10) to target address: 50014380032caa2a,1 is online. Load balancing: round-robin
May 6 19:54:18 sworks genunix: [ID 408114 kern.info] /scsi_vhci/sgen@g50014380032caa28 (sgen0) online

Changes

Enabling MPXIO global or on HBA that media changer is connected to.

Cause

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