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Copyright (C) 2013 Hewlett-Packard Development Company, L.P.

cpqary3 - provides disk and SCSI tape support for HP Smart Array controllers

The cpqary3 module provides low-level interface routines between the common disk I/O subsystem and the HP SMART Array controllers. The cpqary3 driver provides disk and SCSI tape support for the HP Smart Array controllers.

Please refer to the cpqary3 release notes, for the supported HP Smart Array Controllers and Storage boxes.

Each controller should be the sole initiator on a SCSI bus. Auto configuration code determines if the adapter is present at the Configured address and what types of devices are attached to it.

Use the Array Configuration Utility to configure the controllers. Each controller can support up to 32 logical volumes. In addition, each controller supports up to a maximum of 28 connected SCSI tape drives. With 1.90 and later versions of cpqary3 driver, HP Smart Array SAS controllers, having Firmware Revision 5.10 or later, will support 64 logical drives. This firmware also supports Dual Domian Multipath configurations.

The driver attempts to initialize itself in accordance with the information found in the configuration file, /kernel/drv/cpqary3.conf.

New component - hmaeventd which logs the storage events onto console and to the Integrated Management Log is made a part of HPQhma 5.0.0 package, which is not part of the operating system. Therefore, by default, notify on event functionality is disabled in the driver from 2.1.0 onwards. Storage event logging may be enabled in the driver by modifying cpqary3.conf to set the cpqary3_noe property to "on". Modification of driver properties requires reloading the driver, which in most cases will occur only following a reboot of the system.

The target driver's configuration file shall need entries if support is needed for targets numbering greater than the default number of targets supported by the corresponding target driver.

By default, entries for SCSI target numbers 0 to 15 are present in sd.conf. Entries for target numbers 16 and above must be added to the 'scsi' class in sd.conf to support additional corresponding logical volumes.

If SCSI tape drives are connected to the supported controllers, entries for target IDs from 33 to 33+N must be added in the /kernel/drv/st.conf file under 'scsi' class, where N is the total number of SCSI tape drives connected to the controller with largest number of tape drives connected to it, in the existing configuration. For example, two supported controller, c1 and c2 are present in the system. If controller c1 has two (2) tape drives and controller c2 has five (5) tape drives connected, then entries for target IDs 33 thru 38 are required under 'scsi' class in /kernel/drv/st.conf file. The maximum number of tape drives that can be connected to a controller is 28. With 1.90 and later versions of cpqary3 driver, if tape drives are connected to Smart Array SAS controllers, then target ID entries for tape drives from 65 to 65+N must be added in /kernel/drv/st.conf file under the 'scsi' class.

0

25 /kernel/drv/cpqary3.conf - configuration file for CPQary3

driver.conf (4), sd (7D), st (7D)

The Smart Array controllers supported by the current version of the cpqary3 driver do not support 'format unit' SCSI command. Hence, selecting 'format' option under 'format' utility main menu is not supported. In addition, the 'repair' option under 'format' utility main menu is not supported as this operation is not applicable to Logical volumes connected to the supported Smart Array controllers.