HP StorageWorks XP24000, StorageWorks XP20000, StorageWorks XP12000, StorageWorks XP10000, StorageWorks SVS 200 XP Disk Array Configuration Guide for Linux

HP StorageWorks

XP Disk Array Configuration Guide for Linux

XP24000, XP20000, XP12000, XP10000,
SVS 200

Part number: A5951–96097
Tenth edition: September 2007

Legal and notice information

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Microsoft, Windows, Windows XP, and Windows NT are U.S. registered trademarks of Microsoft Corporation.

Contents

Preface ................................................................................................ 7

About this guide ......................................................................................................................... 7

Intended audience ...................................................................................................................... 7

Related documentation ................................................................................................................ 7

Document conventions and symbols ............................................................................................... 7

Conventions for storage capacity values ........................................................................................ 8

Graphical interface illustrations ..................................................................................................... 9

HP technical support ................................................................................................................... 9

Subscription service .................................................................................................................... 9

HP websites ............................................................................................................................... 9

Documentation feedback ........................................................................................................... 10

1 Installing and configuring Linux for the XP disk array ............................. 11

Features and requirements ......................................................................................................... 11

Fibre Channel interface ............................................................................................................. 11

Device emulation types .............................................................................................................. 12

Partitions ................................................................................................................................. 12

Failover ................................................................................................................................... 12

SNMP configuration .................................................................................................................. 13

XP RAID Manager command devices .......................................................................................... 13

Installation roadmap ................................................................................................................. 13

Installing and configuring the disk array ...................................................................................... 14

Setting the host mode and host group mode for the disk array ports .......................................... 14

Configuring the Fibre Channel ports ..................................................................................... 15

Fabric and Connection parameter settings ....................................................................... 16

Fibre address .............................................................................................................. 17

Setting the System Option Modes ......................................................................................... 17

Installing and configuring the host ............................................................................................... 17

Installing and configuring the FCAs ..................................................................................... 17

Loading the operating system and software ........................................................................... 17

Clustering and fabric zoning ................................................................................................ 17

Fabric zoning and LUN security for multiple operating systems ................................................. 18

Connecting the disk array .......................................................................................................... 18

Restarting the Linux server ................................................................................................... 19

Verifying new device recognition .......................................................................................... 19

Defining the paths ..............................................................................................................20

Configuring disk array devices ................................................................................................... 21

Partitioning the devices ....................................................................................................... 21

Creating the file systems ...................................................................................................... 21

Creating file systems with ext2 ....................................................................................... 21

Creating the mount directories ............................................................................................. 22

Creating the mount table ..................................................................................................... 22

Verifying file system operation .............................................................................................. 23

XP Disk Array Configuration Guide for Linux 3

2 Troubleshooting ............................................................................... 25

Error conditions ........................................................................................................................ 25

Calling the HP support center ..................................................................................................... 26

Contact information ............................................................................................................ 26

Before you call ................................................................................................................... 26

A Path worksheet ................................................................................ 27

Worksheet ............................................................................................................................... 27

B Disk array supported emulations ........................................................ 29

Supported emulations ................................................................................................................ 29

Emulation specifications ............................................................................................................. 30

Glossary ............................................................................................ 33

Index ................................................................................................. 37

4

Figures

..SNMP configuration ............................................................................................... 131

..Simple point-to-point fabric topology example ............................................................ 162

..Multi-cluster environment .......................................................................................... 183

XP Disk Array Configuration Guide for Linux 5

Tables

..Document conventions ............................................................................................... 71

.. Host group mode (option) ....................................................................................... 152

..Fabric topology settings ........................................................................................... 163

..Fabric zoning and LUN security settings ..................................................................... 184

..Error conditions ...................................................................................................... 255

..Path worksheet ....................................................................................................... 276

..Supported emulations ............................................................................................. 297

..Emulation specifications ........................................................................................... 308

6

Preface

About this guide

This guide provides information about:

• Requirements and procedures for connecting an XP disk array or SVS 200 to a host system

• Configuring the disk array for use with the Linux operating system

Intended audience

This guide is intended for system administrators with knowledge of:

• The host hardware

• Linux operating system

• XP disk arrays and/or the SVS 200

Related documentation

The following documents [and websites] provide related information:

• HP StorageWorks XP10000 Disk Array: Owner's Guide

• HP StorageWorks XP12000 Disk Array: Owner's Guide

• HP StorageWorks XP20000 Disk Array: Owner's Guide

• HP StorageWorks XP24000 Disk Array: Owner's Guide

• HP StorageWorks 200 Storage Virtualization System: Owner's Guide

• HP StorageWorks XP LUN Manager User's Guide

• HP StorageWorks SAN Design Reference Guide

• HP StorageWorks XP Command View Advanced Edition Software Device Manager Web Client

User's Guide

You can find these documents from the Manuals page of the HP Business Support Center website:

http://www.hp.com/support/manuals

In the Storage section, click Disk Storage Systems and then select your product.

Document conventions and symbols

Table 1 Document conventions

ElementConvention

Cross-reference links and e-mail addressesBlue text: Table 1

XP Disk Array Configuration Guide for Linux 7

ElementConvention

Website addressesBlue, underlined text: http://www.hp.com

Bold text • Keys that are pressed

• Text typed into a GUI element, such as a box

• GUI elements that are clicked or selected, such as menu

and list items, buttons, tabs, and check boxes

Text emphasisItalic text

Monospace text • File and directory names

• System output

• Code

• Commands, their arguments, and argument values

Monospace, italic text • Code variables

• Command variables

Emphasized monospace textMonospace, bold text

CAUTION:

Indicates that failure to follow directions could result in damage to equipment or data.

IMPORTANT:

Provides clarifying information or specific instructions.

NOTE:

Provides additional information.

TIP:

Provides helpful hints and shortcuts.

Conventions for storage capacity values

HP XP storage systems use the following values to calculate physical storage capacity values (hard
disk drives):

• 1 KB (kilobyte) = 1,000 bytes

•

1 MB (megabyte) = 1,0002 bytes

•

1 GB (gigabyte) = 1,0003 bytes

Preface8

•

1 TB (terabyte) = 1,0004 bytes

HP XP storage systems use the following values to calculate logical storage capacity values (logical
devices):

• 1 KB (kilobyte) = 1,024 bytes

•

1 MB (megabyte) = 1,0242 bytes

•

1 GB (gigabyte) = 1,0243 bytes

•

1 TB (terabyte) = 1,0244 bytes

• 1 block = 512 bytes

Graphical interface illustrations

The GUI illustrations in this guide were created using a Windows computer with the Internet Explorer
browser. Actual windows may differ depending on the operating system and browser used. GUI
contents also vary with licensed program products, storage system models, and firmware versions.

HP technical support

For worldwide technical support information, see the HP support website:

http://www.hp.com/support

Before contacting HP, collect the following information:

• Product model names and numbers

• Technical support registration number (if applicable)

• Product serial numbers

• Error messages

• Operating system type and revision level

• Detailed questions

Subscription service

HP recommends that you register your product at the Subscriber's Choice for Business website:

http://www.hp.com/go/e-updates

After registering, you will receive e-mail notification of product enhancements, new driver versions,
firmware updates, and other product resources.

HP websites

For additional information, see the following HP websites:

•http://www.hp.com

•http://www.hp.com/go/storage

•http://www.hp.com/service_locator

•http://www.hp.com/support/manuals

XP Disk Array Configuration Guide for Linux 9

Documentation feedback

HP welcomes your feedback.

To make comments and suggestions about product documentation, please send a message to

[email protected]. All submissions become the property of HP.

Preface10

1 Installing and configuring Linux for the
XP disk array

You and your HP service representative each play a role in installation. Your HP service representative
is responsible for installing the disk array and formatting the disk devices. You are responsible for
configuring the host server for the new devices with assistance from your HP service representative.

Features and requirements

Ask your HP service representative about the latest supported hardware and software.

The disk array has the following features:

• Storage capacity: The storage capacity for each model is listed below:

XP10000: Up to 240 drives for up to 69.2 TB, 48 FC ports
XP12000: Up to 1152 drives for up to 332 TB, 128 FC ports
XP20000: Up to 240 drives for up to 69.2 TB, 48 FC ports
XP24000: Up to 1152 drives for up to 332 TB, 256 FC ports
SVS 200: Up to 127 TB in external storage, 48 FC ports

• Server support: Server supported by HP to run Linux. Consult your HP representative for a list of

supported servers.

• Operating system support: Check with your HP representative for the current OS versions supported

by your XP disk array.

Before installing the disk array, ensure the following requirements are met:

• Fibre Channel Port configuration: Configure each Fibre Channel port on the disk array so it has

a unique Fibre Channel loop ID. (All ports are set to 0 by default at the factory.)

• Linux version: Confirm you are using Red Hat, SuSE, or United Linux.

• Superuser access: Make sure you have superuser (root) login access to the Linux system.

• Fibre Channel Adapter (FCAs): Install FCAs and all utilities and drivers. Refer to the adapter

documentation for installation details

• (Recommended) HP StorageWorks XP Remote Web Console, HP StorageWorks XP Command

View Advanced Edition Software or HP StorageWorks XP Command View with LUN management
feature for configuring disk array ports and paths

• (Recommended) HP StorageWorks XP Array Manager

• (Optional) Check with your HP representative for other XP software available for your system.

Fibre Channel interface

The XP family of disk arrays and the SVS 200 support these Fibre Channel elements:

• Connection speeds of 1 Gbps, 2 Gbps, and 4 Gbps

• Short-wave non-OFC (open fiber control) optical interface

XP Disk Array Configuration Guide for Linux 11

• Multimode optical cables with SC or LC connectors

• Public or private arbitrated loop (FC-AL) or direct fabric attach

• Fibre Channel switches

Even though the interface is Fibre Channel, this guide uses the term “SCSI disk” because disk array
devices are defined to the host as SCSI disks.

Device emulation types

The XP family of disk arrays and the SVS 200 support these device emulation types:

• OPEN-x devices: OPEN-x logical units represent disk devices. Except for OPEN-V, these devices

are based on fixed sizes. OPEN-V is a user-defined size based on a CVS device. Supported
emulations include OPEN-3, OPEN-8, OPEN-9, OPEN-E, OPEN-L, and OPEN-V devices.

• LUSE devices (OPEN-x*n): Logical Unit Size Expansion (LUSE) devices combine 2 to 36 OPEN-x

devices to create expanded LDEVs larger than standard OPEN-x disk devices. For example, an
OPEN-x LUSE volume created from ten OPEN-x volumes is designated as OPEN-x*10.

• CVS devices (OPEN-x CVS): Volume Size Configuration (VSC) defines custom volumes (CVS) that

are smaller than normal fixed-sized logical disk devices (volumes). OPEN-V is a CVS-based custom
disk size that you determine. OPEN-L does not support CVS. Although OPEN-V is a CVS-based
device, the product name in the SCSI inquiry string is OPEN-V opposed to the fixed size
OPEN-[389E] devices that appear as OPEN-x-CVS.

• LUSE (expanded) CVS devices (OPEN-x*n CVS): LUSE CVS combines CVS devices to create an

expanded device. This is done by first creating CVS custom-sized devices and then using LUSE to
combine from 2 to 36 CVS devices. For example, if three OPEN-9 CVS volumes are combined to
create an expanded device, this device is designated as OPEN-9*3-CVS. OPEN-V devices are
designated as OPEN-V*n (without CVS).

NOTE:

For the SVS 200, and the XP24000/XP20000/XP12000/XP10000 when connected to external storage
devices, HP recommends using OPEN-V as the emulation the array makes visible to the host. This allows
configuration of external storage LDEVs without losing data. Using any other emulation may cause data
loss in the external storage LUNs. For new deployments, OPEN-V should be chosen because some features
(such as XP Snapshot or Continuous Access Journal) are only supported with OPEN-V.

Refer to Table 8 on page 30 for detailed information.

Partitions

In a Linux environment, one LUN can be divided into a maximum of four primary partitions (using
fdisk) or maximum of one extended partition.

Failover

The disk arrays support many standard software products that provide host, application, or I/O path
failover and management.

Installing and configuring Linux for the XP disk array12

SNMP configuration

The XP family of disk arrays and the SVS 200 support standard Simple Network Management Protocol
(SNMP) for remotely managing arrays. The SNMP agent on the service processor (SVP) performs
error-reporting operations requested by the SNMP manager. SNMP properties are usually set from
the SVP but they can also be set remotely using XP Remote Web Console, XP Command View (XP
arrays only), or XP Command View Advanced Edition Software. Refer to the applicable user's guide
for procedures.

Figure 1 SNMP configuration

XP RAID Manager command devices

HP StorageWorks XP RAID Manager manages HP StorageWorks XP Business Copy Software or HP
StorageWorks XP Continuous Access Software operations from a host server. To use XP RAID Manager
you must designate at least one LDEV as a command device. This can be done with XP Remote Web
Console, XP Command View (XP arrays only), or XP Command View Advanced Edition Software to
. Refer to the applicable user guide for information about how to designate a command device.

Installation roadmap

Perform these actions to install and configure the disk array:

1. Installing and configuring the disk array

• Setting the host mode and host group mode

• Configuring the Fibre Channel ports

• Setting the System Option Modes

2. Installing and configuring the host

• Installing and configuring the FCAs

• Loading the operating system and software

• Clustering and fabric zoning

• Fabric zoning and LUN security for multiple operating systems

3. Connecting the disk array

• Restarting the Linux server

• Verifying new device recognition

• Defining the paths

4. Configuring disk array devices

• Partitioning the devices

XP Disk Array Configuration Guide for Linux 13

• Creating the file systems

• Creating the mount directories

• Creating the mount table

• Verifying file system operation

Installing and configuring the disk array

The HP service representative performs these tasks:

• Assembling hardware and installing software

• Loading the microcode updates

• Installing and formatting devices

After these tasks are finished, you will use XP Remote Web Console, XP Command View (XP arrays
only), XP Command View Advanced Edition Software, or XP Array Manager to complete the remaining
tasks listed below. If you do not have these programs, your HP service representative can perform
these tasks for you.

Setting the host mode and host group mode for the disk array ports

After the disk array is installed, you must set the host mode for each disk array port to match the host
OS. Set the host mode using LUN Manager in XP Remote Web Console (shown), XP Command View
(XP arrays only), or XP Command View Advanced Edition Software. If these are not available, the
HP service representative can set the host mode using the SVP. The host mode setting for Linux is 00.
Test.

CAUTION:

The correct host mode must be set for all new installations (newly connected ports) to Linux hosts. Do not
select a mode other than 00 for Linux. Changing a host mode after the host has been connected is disruptive
and requires the server to be rebooted.

When a new host group is added, additional host group modes (options) may be configured. The
storage administrator must verify if an additional host group mode is required for the host group.

Installing and configuring Linux for the XP disk array14

The following host group mode (option) is available for :

Table 2 Host group mode (option)

Group
Mode

CAUTION:

Changing host group modes for ports where servers are already installed and configured is disruptive and
requires the server to be rebooted.

Configuring the Fibre Channel ports

Configure the disk array Fibre Channel ports by using XP Remote Web Console (shown), XP Command
View (XP arrays only), or XP Command View Advanced Edition Software. Select the settings for each
port based on your storage area network topology. Use switch zoning if you connect different types
of hosts to the array through the same switch.

CommentsDefaultFunctionHost

Previously MODE249InactiveReporting Unit Attention when adding LUN7

XP Disk Array Configuration Guide for Linux 15

Fabric and Connection parameter settings

Set each array port to FABRIC ON or OFF with connections of POINT-TO-POINT or FC-AL as shown
in the following figures and table. For detailed topology information, refer to the HP StorageWorks
SAN Design Reference Guide at

http://www.hp.com/go/sandesign.

Figure 2 Simple point-to-point fabric topology example

Table 3 Fabric topology settings

ProvidesConnection parameterFabric parameter

FC-ALOFF

Installing and configuring Linux for the XP disk array16

Not supportedFC-ALON

FL-port (private arbitrated loop;
direct connect without a SAN)

N-port (SAN fabric port)Point-to-PointON

Not supportedPoint-to-PointOFF

Fibre address

In fabric environments, the port addresses are assigned automatically. In arbitrated loop environments,
set the port addresses by selecting a unique arbitrated loop physical address (AL-PA) or loop ID for
each port. For specific values, refer to the HP StorageWorks XP LUN Manager User's Guide applicable
to your array.

Setting the System Option Modes

The HP service representative sets the System Option Mode(s) based on the operating system and
software configuration of the host. Notify your HP representative if you install storage agnostic software
(such as backup or cluster software) that may require specific settings.

Installing and configuring the host

This section explains how to install and configure Fibre Channel adapter (FCAs) that connect the host
to the disk array.

Installing and configuring the FCAs

Install and configure the Fibre Channel adapters using the FCA manufacturer's instructions.

On Linux systems, the disk array only supports QLogic and Emulex adapters. Contact your HP service
representative for the latest information about supported FCAs.

Loading the operating system and software

Follow the manufacturer's instructions to load the operating system and software onto the host. Load
all OS patches and configuration utilities supported by HP and the FCA manufacturer.

Clustering and fabric zoning

If you plan to use clustering, install and configure the clustering software on the servers.

Clustering is the organization of multiple servers into groups. Within a cluster, each server is a node.
Multiple clusters compose a multi-cluster environment. The following example shows a multi-cluster
environment with three clusters, each containing two nodes. The nodes share access to the disk array.

XP Disk Array Configuration Guide for Linux 17

Figure 3 Multi-cluster environment

Within the Storage Area Network (SAN), the clusters may be homogeneous (all the same operating
system) or they may be heterogeneous (mixed operating systems). How you configure LUN security
and fabric zoning depends on the operating system mix and the SAN configuration.

Fabric zoning and LUN security for multiple operating systems

You can connect multiple clusters of various operating systems to the same switch and fabric using
appropriate zoning and LUN security as follows:

• Storage port zones may overlap if more than one operating system needs to share an array port.

• Heterogeneous operating systems may share an XP array port if you use Secure Manager and set

the appropriate host group and mode. All others must connect to a dedicated XP array port.

• Use Secure Manager for LUN isolation when multiple hosts connect through a shared array port.

Secure Manager provides LUN security by allowing you to restrict which LUNs each host can
access.

Table 4 Fabric zoning and LUN security settings

LUN SecurityFabric ZoningOS MixEnvironment

Standalone SAN
(non-clustered)

Clustered SAN
Multi-Cluster SAN

present in the SAN)

type present in the SAN)

Connecting the disk array

The HP service representative connects the disk array to the host by:

• Verifying operational status of the disk array channel adapters, LDEVs, and paths.

• Connecting the Fibre Channel cables between the disk array and the fabric switch or host.

• Verifying the ready status of the disk array and peripherals.

Installing and configuring Linux for the XP disk array18

Not requiredhomogeneous (a single OS type

Requiredheterogeneous (more than one OS

Must be used when
multiple hosts or cluster
nodes connect through a
shared port

Restarting the Linux server

To recognize the new device(s), restart the Linux server as follows:

1. Power on the display of the Linux server.

2. Power on all devices other than the Linux server.

3. Confirm ready status of all devices.

4. Power on the Linux server.

Verifying new device recognition

1. Verify that the FCA driver is installed using the lsmod command.

2. View the device information in the /proc/scsi/scsi file.

Example

#cat /proc/scsi/scsiAttached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: HP Model: OPEN-9 Rev: 2105
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 00 Lun: 01
Vendor: HP Model: OPEN-9 Rev: 2105
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 00 Lun: 02
Vendor: HP Model: OPEN-9 Rev: 2105
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 00 Lun: 03
Vendor: HP Model: OPEN-9 Rev: 2105
Type: Direct-Access ANSI SCSI revision: 02

3. Verify that the system recognizes the disk array partitions by viewing the /proc/partitions

file.

Example

#cat /proc/partitions
major minor #blocks name rio rmerge rsect ...
8 0 7211520 sda 1 3 8 ...
8 1 7181087 sda1 0 0 0 ...
8 2 28272 sda2 0 0 0 ...
8 16 7211520 sdb 1 3 8 ...
8 17 7181087 sdb1 0 0 0 ...
8 18 28272 sdb2 0 0 0 ...
8 32 7211520 sdc 1 3 8 ...
8 33 7181087 sdc1 0 0 0 ...
8 34 28272 sdc2 0 0 0 ...
8 48 7211520 sdd 1 3 8 ...
8 49 7181087 sdd1 0 0 0 ...
8 50 28272 sdd2 0 0 0 ...
8 64 7211520 sde 1 3 8 ...
8 65 7181087 sde1 0 0 0 ...
8 66 28272 sde2 0 0 0 ...
8 80 7211520 sdf 1 3 8 ...
8 81 7173022 sdf1 0 0 0 ...
8 82 32130 sdf2 0 0 0 ...

XP Disk Array Configuration Guide for Linux 19

8 96 7211520 sdg 1 3 8 ...
8 97 7173022 sdg1 0 0 0 ...
104 0 17776560 cciss/c0d0 168200 352184 4166792...
104 1 257024 cciss/c0d0p1 1 3 8 ...
104 2 1048560 cciss/c0d0p2 2 3 16 ...
104 3 16470960 cciss/c0d0p3 168193 352166 4166736...

In the above example, the “sd” devices represent the XP disk partitions and the “cciss” devices
represent the internal hard drive partitions on an HP Proliant system.

Defining the paths

Use XP Remote Web Console (shown), XP Command View (XP arrays only), or XP Command View
Advanced Edition Software to define paths (LUNs) between hosts and volumes in the disk array.

This process is also called “LUN mapping.” In XP Remote Web Console and XP Command View,
LUN mapping includes:

• Configuring ports

• Enabling LUN security on the ports

• Creating host groups

• Assigning Fibre Channel adapter WWNs to host groups

• Mapping volumes (LDEVs) to host groups (by assigning LUNs)

In XP Command View Advanced Edition Software, LUN mapping includes:

• Configuring ports

• Creating storage groups

• Mapping volumes and WWN/host access permissions to the storage groups

For details see HP StorageWorks XP LUN Manager User's Guide or HP StorageWorks XP Command
View Advanced Edition Software Device Manager Web Client User's Guide. Note the LUNs and
their ports, WWNs, nicknames, and LDEVs for later use in verifying host and device configuration.

Installing and configuring Linux for the XP disk array20

Configuring disk array devices

Disks in the disk array are configured using the same procedure for configuring any new disk on the
host. This includes the following procedures:

1. Partitioning the devices

2. Creating the file systems

3. Creating the mount directories

4. Creating the mount table

5. Verifying file system operation

Creating scripts to configure all devices at once may save you considerable time.

Partitioning the devices

After the device parameters have been set, the next step is to set the partitions. To partition the devices:

1. Enter fdisk/dev/device_name.

Example

# fdisk/dev/sda

2. Select p to display the present partitions.

3. Select n to make a new partition. You can make up to four primary partitions or you can make

one extended partition. The extended partition can be divided into a maximum of 11 logical
partitions, which can be assigned partition numbers from 5 to 15.

4. Select w to write the partition information to disk and complete the fdisk command.

5. Other commands that you might want to use include:

d to remove partitions

q to stop a change

6. Repeat the above steps for each device.

Creating the file systems

The supported file system for Linux is ext2.

Creating file systems with ext2

1. Enter mkfs –t ext2 /dev/device_name.

Example

# mkfs –t ext2 /dev/sdd

XP Disk Array Configuration Guide for Linux 21

2. Repeat step 1 for each device on the disk array.

Creating the mount directories

Create mount directories using the mkdir command. Choose names for the mount directories which
identify both the logical volume and partition.

1. Enter mkdir /mnt/mount_point.

Example

# mkdir /mnt/A5700F_LU00

2. Repeat step 1 for each device on the disk array.

Creating the mount table

Add the new devices to the /etc/fstab file to specify the automount parameters for each device.

1. Edit the /etc/fstab file to add one line for each device to be automounted.

Each line of the file contains: (A) device name, (B) mount point, (C) file system type (“ext2”), (D)
mount options (“defaults”), (E) enhance parameter (“1”), and (F) fsck pass 2.

Example

/dev/sdb /A5700F_ID08 ext2 defaults 1 2
/dev/sdc /A5700F_ID09 ext2 defaults 1 2
/dev/sdd /A5700F_ID10 ext2 defaults 1 2
A B C D E F

Make an entry for each device. After all the entries are made, save the file and exit the editor.

Installing and configuring Linux for the XP disk array22

2. Reboot the system.

3. Display the mounted devices using the df –h command and verify that the devices were

automounted.

Example

# df -h
Filesystem Size Used Avail Used% Mounted on
/dev/sda1 1.8G 890M 866M 51% /
/dev/sdb1 1.9G 1.0G 803M 57% /usr
/dev/sdc1 2.2G 13k 2.1G 0% /A5700F-LU00
#

Verifying file system operation

Verify file system operation by copying a file to each device.

XP Disk Array Configuration Guide for Linux 23

Installing and configuring Linux for the XP disk array24

2 Troubleshooting

This section provides resolutions for various error conditions you may encounter.

If you are unable to resolve an error condition, ask your HP support representative for assistance. See
“Calling the HP support center” on page 26.

Error conditions

Depending on your system configuration, you may be able to view error messages (R-SIMS) as follows:

• In XP Remote Web Console (Status tab)

• In XP Command View Advanced Edition Software (Alerts window)

• In XP Command View (Event History or Event Notification windows) (XP arrays only)

Table 5 Error conditions

recognized by the host.

Recommended actionError condition

Verify the following:The logical devices are not

• The READY indicator lights on the disk array are ON.

• Fiber cables are correctly installed and firmly connected.

• The target IDs are properly configured. The LUNs for each TID must

start at 0 and continue sequentially without skipping any numbers.

• The TIDs/WWNs on each bus are unique. Do not install two

devices with the same ID on the same bus. Recheck the buses for
new devices.

• LUSE devices are not intermixed with normal LUNs on the same

port.

• The maximum number of LUSE devices per port has not been

exceeded.

• The disk array host mode is set correctly.

The host does not reboot properly
after hard shutdown.

Logical volumes cannot be created.

rebooting.

If you power off the host without executing the shutdown process, wait
three minutes to allow the disk array's internal timeout process to purge
queued commands. If the host restarts while the disk array is processing
queued commands, the host may not reboot successfully.

Verify that the disk array logical devices are correctly formatted.Physical volumes cannot be created.

Verify that the volume capacity for OPEN-x volumes is not greater than
the maximum capacity allowed. See “Disk array supported

emulations” on page 29.

Verify that the capacity of the volume group is not less than the total
capacity of the partitioned logical volume.

Verify that the host was restarted correctly.A file system is not mounted after
Verify that the file system attributes are correct.

XP Disk Array Configuration Guide for Linux 25

because the disk array was busy or
it logged a panic message.

or the disk array has displayed “Not
Ready” and timed out.

Recommended actionError condition

Reboot the host.The disk array performs a self reboot

Contact HP.The disk array responds “Not Ready”

The host detects a parity error.

The host hangs or devices are
declared and the host hangs.

Check the FCA and make sure it was installed properly. Reboot the
host.

Make sure there are no duplicate disk array TIDs and that disk array
TIDs do not conflict with any host TIDs.

Calling the HP support center

If you are unable to resolve an error condition, contact the HP support center for assistance.

Contact information

Telephone numbers for worldwide technical support are listed on the HP support web site:

http://www.hp.com/support/.

Before you call

Be sure to have the following information available:

• Technical support registration number (if applicable)

• Product serial numbers

• Product model names and numbers

• Applicable error messages

• Operating system type and revision level

• Detailed, specific questions

For continuous quality improvement, calls may be recorded or monitored.

Troubleshooting26

A Path worksheet

Worksheet

Table 6 Path worksheet

control unit)

Device TypeLDEV (CU:LDEV) (CU =

Number

Alternate PathsPath 1SCSI Bus

TID:TID:TID:0:00
LUN:LUN:LUN:

TID:TID:TID:0:01
LUN:LUN:LUN:

TID:TID:TID:0:02
LUN:LUN:LUN:

TID:TID:TID:0:03
LUN:LUN:LUN:

TID:TID:TID:0:04
LUN:LUN:LUN:

TID:TID:TID:0:05
LUN:LUN:LUN:

TID:TID:TID:0:06
LUN:LUN:LUN:

TID:TID:TID:0:07
LUN:LUN:LUN:

TID:TID:TID:0:08
LUN:LUN:LUN:

TID:TID:TID:0:09
LUN:LUN:LUN:

TID:TID:TID:0:10
LUN:LUN:LUN:

XP Disk Array Configuration Guide for Linux 27

Path worksheet28

B Disk array supported emulations

This appendix provides information about supported emulations and device type specifications. Some
parameters may not be relevant to your array. Consult your HP representative for information about
supported configurations for your system.

Supported emulations

HP recommends using OPEN-V as the emulation for better performance and features that may not be
supported with the legacy emulations (OPEN-[389LE]).

Table 7 Supported emulations

LUSE & CVSCVSLUSEFixed SizeEmulationXP model

YesYesYesYesOPEN-3

YesYesYesYesOPEN-8XP10000

YesYesYesYesOPEN-9XP12000

YesYesYesYesOPEN-EXP20000

OPEN-KXP24000

YesYesOPEN-LSVS 200

OPEN-M

YesYesOPEN-V

NOTE:

For the SVS 200, and the XP24000/XP20000/XP12000/XP10000 when connected to external storage
devices, HP recommends using OPEN-V as the emulation the array makes visible to the host. This allows
external storage LDEVs to be configured without losing data. Using any other emulation may cause data
loss in the external storage LUNs.

XP Disk Array Configuration Guide for Linux 29

Emulation specifications

Table 8 Emulation specifications

Emulation

(Note 1)

LUSE

CVS

Category

(Note 2)

Product name

(Note 3)

Blocks

(512 bytes)

Sector

size

(bytes)

cylinders

Heads# of

Sectors

per

track

Capacity

MB*

(Note 4)

2347961533385124806720OPEN-3SCSI diskOPEN-3

70079615996651214351040OPEN-8SCSI diskOPEN-8

704296151001651214423040OPEN-9SCSI diskOPEN-9

1389396151975951228452960OPEN-ESCSI diskOPEN-E

3476196154943951271192160OPEN-LSCSI diskOPEN-L

2347*n96153338*n5124806720*nOPEN-3*nSCSI diskOPEN-3*n

7007*n96159966*n51214351040*nOPEN-8*nSCSI diskOPEN-8*n

7042*n961510016*n51214423040*nOPEN-9*nSCSI diskOPEN-9*n

13893*n961519759*n51228452960*nOPEN-E*nSCSI diskOPEN-E*n

34761*n961549439*n51271192160*nOPEN-L*nSCSI diskOPEN-L*n

CVS LUSE

General notes:

*Capacity = (512 x number of blocks) ÷ 1024

Note 79615Note 6512Note 5OPEN-3-CVSSCSI diskOPEN-3 CVS

Note 79615Note 6512Note 5OPEN-8-CVSSCSI diskOPEN-8 CVS

Note 79615Note 6512Note 5OPEN-9-CVSSCSI diskOPEN-9 CVS

Note 79615Note 6512Note 5OPEN-E-CVSSCSI diskOPEN-E CVS

Note 712815Note 6512Note 5OPEN-VSCSI diskOPEN-V

Note 79615Note 6512Note 5OPEN-3*n-CVSSCSI diskOPEN-3*n CVS

Note 79615Note 6512Note 5OPEN-8*n-CVSSCSI diskOPEN-8*n CVS

Note 79615Note 6512Note 5OPEN-9*n-CVSSCSI diskOPEN-9*n CVS

Note 79615Note 6512Note 5OPEN-E*n-CVSSCSI diskOPEN-E*n CVS

Note 712815Note 6512Note 5OPEN-V*nSCSI diskOPEN-V*n

2

Disk array supported emulations30

Note 1:

Note 2:

Note 3:

Note 4:

Note 5:

The value n is the number of volumes combined together. For example, with 8 combined volumes:
OPEN-V*8.

The availability of an emulation depends on the disk array.

The devices are defined to the host as SCSI disk devices, even though the interface is Fibre Channel.

The command device (used for XP Raid Manager) is distinguished by -CM on the product name (for
example, OPEN-3-CM, OPEN-3-CVS-CM).

The device capacity can sometimes be changed by the BIOS or host adapter board. This may make
actual capacity different from that listed in the table.

The number of blocks for a CVS volume is calculated as follows:

# of blocks = (# of cylinders) × (# of heads) × (# of sectors per track)

Note 6:

Example

For an OPEN-3 CVS volume with capacity = 37 MB:
# of blocks = (53 cylinders–see Note 5) × (15 heads) ×
(96 sectors per track) = 76320

Example

For an OPEN-V CVS volume with capacity = 49 MB:
# of blocks = (53 cylinders–see Note 5) × (15 heads) ×
(128 sectors per track) = 101760

The number of cylinders for a CVS volume is calculated as follows ( ... means that the value should
be rounded up to the next integer):

OPEN-3/8/9/E: The number of cylinders for a CVS volume = # of cylinders = (capacity (MB)
specified by user) × 1024/720

Example

For an OPEN-3 CVS volume with capacity = 37 MB:
# of cylinders = 37 × 1024/720 = 52.62
(rounded up to next integer) = 53 cylinders

OPEN-V: The number of cylinders for a CVS volume = # of cylinders = (capacity (MB) specified by
user) × 16/15

Example

For an OPEN-V CVS volume with capacity = 49 MB:
# of cylinders = 49 × 16/15 = 52.26
(rounded up to next integer) = 53 cylinders

XP Disk Array Configuration Guide for Linux 31

Note 7:

OPEN-3/8/9/E: The number of cylinders for a CVS LUSE volume = # of cylinders = (capacity (MB)
specified by user) × 1024/720 × n

Example

For a CVS LUSE volume with capacity = 37 MB and n = 4:
# of cylinders = 37 × 1024/720 × 4 = 52.62 × 4 = 53 × 4 = 212

OPEN-V: The number of cylinders for a CVS LUSE volume = # of cylinders = (capacity (MB) specified
by user) × 16/15 × n

Example

For an OPEN-V CVS LUSE volume with capacity = 49 MB and n = 4:
# of cylinders = 49 × 16/15 × 4 = 52.26 × 4 = 53 × 4 = 212

The capacity of an OPEN-3/8/9/E CVS volume is specified in MB, not number of cylinders. The
capacity of an OPEN-V CVS volume can be specified in MB or number of cylinders. You set the
volume size using XP Remote Web Console, XP Command View (XP arrays only), or XP Command
View Advanced Edition Software.

Disk array supported emulations32

Glossary

AL-PA Arbitrated loop physical address.

array group A group of 4 or 8 physical hard disk drives (HDDs) installed in an XP disk array

command device A volume on the disk array that accepts XP Continuous Access Software or XP

CU Control Unit. Contains LDEVs and is approximately equivalent to SCSI Target ID.

CVS Custom volume size. CVS devices (OPEN-x CVS) are custom volumes configured

emulation modes The logical devices (LDEVs) associated with each RAID group are assigned an

and assigned a common RAID level. RAID1 array groups consist of 4 (2D+2D)
or 8 HDDs (4D+4D). RAID5 array groups include a parity disk but also consist
of 4 (3D+1P) or 8 HDDs (7D+1P). All RAID6 array groups are made up of 8
HDDs (6D+2P).

Business Copy Software control operations which are then executed by the disk
array.

using array management software to be smaller than normal fixed-size OPEN
system volumes. Synonymous with volume size customization (VSC). OPEN-V is
a CVS-based volume.

emulation mode that makes them operate like OPEN system disk drives. The
emulation mode determines the size of an LDEV:
OPEN-3: 2.46 GB
OPEN-8: 7.38 GB
OPEN-9: 7.42 GB
OPEN-E: 13.56 GB
OPEN-L: 36 GB
OPEN-V: User-defined custom size

failover Using an alternate unit or path instead of a failed unit or path in order to continue

functioning.

FC Fibre Channel.

FCA Fibre Channel Adapter.

FC-AL Fibre Channel arbitrated loop.

FCP Fibre Channel Protocol.

HBA Host bus adapter.

host mode Each port can be configured for a particular host type. These modes are

represented as two-digit hexadecimal numbers. For example, host mode 08
represents an HP-UX host.

LDEV Logical device. An LDEV is created when a RAID group is carved into pieces

according to the selected host emulation mode (that is, OPEN-3, OPEN-8,

XP Disk Array Configuration Guide for Linux 33

OPEN-E). The number of resulting LDEVs depends on the selected emulation
mode. The term LDEV is often used synonymously with the term volume.

LUN Logical unit number. A LUN results from mapping a SCSI logical unit number,

port ID, and LDEV ID to a RAID group. The size of the LUN is determined by the
emulation mode of the LDEV and the number of LDEVs associated with the LUN.
For example, a LUN associated with two OPEN-3 LDEVs has a size of 4,693
MB.

LUSE A LUN is normally associated with only a single LDEV. The LUSE feature allows

a LUN to be associated with 1 to 36 LDEVs. Essentially, LUSE makes it possible
for applications to access a single large pool of storage. The LUSE feature is
available when the HP StorageWorks XP Array Manager product is installed.

OFC Open Fibre Control.

OPEN-

x

A general term describing any one of the supported OPEN emulation modes (for
example, OPEN-E. There are two types of OPEN-x devices: legacy OPEN-x
devices with a fixed size (such as, OPEN-3, OPEN-8, OPEN-9, OPEN-E), and
OPEN-V, which has a variable size and is a CVS-based volume.

PA Physical address.

path “Path” and “LUN” are synonymous. Paths are created by associating a port and

a LUN ID with an LDEV.

port A physical connection that allows data to pass between a host and the disk

array. The number of ports on an XP disk array depends on the number of
supported I/O slots and the number of ports available per I/O adapter. The XP
family of disk arrays supports Fibre Channel (FC) ports as well as other port
types. Ports are named by port group and port letter, such as CL1-A. CL1 is the
group, and A is the port letter.

RAID Redundant array of independent disks.

R-SIM Remote service information message.

SCSI Small computer system interface.

SIM Service information message.

SNMP Simple Network Management Protocol.

SVP Service processor, which is the PC built into the disk array. The SVP provides a

direct interface into the disk array. SVP use is reserved for HP support
representatives only.

SVS Storage Virtualization System, an appliance that manages multiple disk array

storage systems.

TID Target ID.

Volume On the XP array, a volume is a uniquely identified virtual storage device

composed of a control unit (CU) component and a logical device (LDEV)
component separated by a colon. For example 00:00 and 01:00 are two
uniquely identified volumes; one is identified as CU = 00 and LDEV = 00, and
the other as CU = 01 and LDEV = 00; they are two unique separate virtual
storage devices within the XP array.

Glossary34

VSC Volume size customization. Synonymous with CVS.

WWN World Wide Name. A unique identifier assigned to a Fibre Channel device.

XP Command
View

XP Command
View Advanced
Edition Software

XP Remote Web
Console

HP StorageWorks XP Command View, a software product for managing XP
arrays. XP Command View runs on a Windows-based management workstation.

HP StorageWorks XP Command View Advanced Edition Software, installs on
the user-provided Device Manager server and provides a browser-based platform
from which you can manage the SVS 200 and the XP family of disk arrays—even
globally distributed arrays.

HP StorageWorks XP Remote Web Console. A browser-based program installed
on the SVP that allows you to configure and manage the disk array.

XP Disk Array Configuration Guide for Linux 35

Glossary36

Index

A

adapters, Fibre Channel , 17
arbitrated-loop physical address, 17
audience, 7

C

clustering, 17
command device(s)

one LDEV as a, 13
XP RAID Manager, 13

configuration

device, 21

emulation types, 12

recognition, 19
FCAs, 17
Fibre Channel ports, 16
host, 17
host mode, setting, 14
port, 16
System Mode, 17

conventions

document, 7
storage capacity values, 8

CVS devices, 12

D

device(s)

configuration, 21
emulation types, 12
emulations, supported, 29
logical, not recognized by host, 25
partitioning, 21
recognition, 19
type specifications, 30

disk array(s)

connecting, 18
device emulations, 29
features, 11
installation overview, 13
Not Ready error message, 26
operating system versions, 11
requirements, 11
self reboots, 26
server support, 11
storage capacity, 11

document

conventions, 7
related documentation, 7

documentation

HP website, 7
providing feedback, 10

E

emulation(s)

device emulation types, 12
supported, 29, 29

error conditions, 25

F

fabric environment

parameter settings, 16
port addresses, 17

zoning, 17
failover, 12
FCA(s), 11

configuring, 17

supported, 17

verify driver installation, 19
features and requirements, 11
Fibre Channel

adapters, configuring, 17

connection speed, 11

interface, 11

parameter settings, 16

ports, configuring, 16

supported elements, 11

topology example, 16
Fibre Channel adapters, see "FCAs", 11

XP Disk Array Configuration Guide for Linux 37

file system(s)

creating, 21
not mounted after rebooting, 25
verifying, 23

G

glossary, 33

H

help

obtaining, 9

host

configuration, 17
doesn't reboot properly, 25

hangs up, 26
host mode, setting, 14
HP

service representative tasks, 14

technical support, 9, 26

I

installation

connecting disk array, 18

HP service representative tasks, 14

overview, 13

procedures, 13
interface, Fibre Channel, 11

L

LDEV(s)

one designated as a command device, 13
Linux

partitions, 12

server, restarting, 19

supported versions, 11
logical volumes, cannot be created, 25
LUN(s)

creating, 20

mapping, 20

security, 17
LUSE devices, 12

M

mount directories, creating, 22
mount table(s), creating, 22
multi-cluster environment, 17

O

OPEN-x devices, 12

operating system(s)

loading, 17
LUN security for, 18
multiple, fabric zoning for, 18
supported versions of Linux, 11

P

parity error, 26
path(s)

defining, 20

worksheet, 27
physical volumes, cannot be created, 25
port(s)

address, 17

Fibre Channel, 16

host mode, setting, 14

R

R-SIMS, 25
related documentation, 7
requirements and features, 11

S

SCSI disk, Fibre Channel interface and term
"SCSI disk", 12
security, LUN, 17
server

restarting, 19

support, 11
SIMS, 25
storage capacity, 11
storage capacity values

conventions, 8
Subscriber's Choice, HP, 9
System Mode, setting, 17

T

technical support, 26

HP, 9

service locator website, 9
topology, fabric, 16
troubleshooting, 25

error conditions, 25

technical support, 26

V

volume(s)

logical, cannot be created, 25

physical, cannot be created, 25

38

W

websites

HP , 9
HP Subscriber's Choice for Business, 9
product manuals, 7

worksheet, path, 27

X

XP Array Manager, 11, 14, 20
XP arrays

storage capacity, 11
XP Business Copy Software, 13
XP Command View, 11, 13, 14, 20
XP Command View Advanced Edition Software,

11, 13, 14, 20

XP Continuous Access Software, 13
XP RAID Manager command devices, 13
XP Remote Web Console, 11, 13, 14, 20

Z

zoning, fabric, 17

XP Disk Array Configuration Guide for Linux 39

40