Hp EVA Array iSCSI Connectivity Option Manual do Utilizador Página 79
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NOTE:
The Linux driver supports both Red Hat 3 and SUSE 8. S e e the
Readme
file in the tar ball for more
information on how to configure the Linux iSCSI Initiator.
Installing the i SCSI driver
In a newly installed Red Hat Linux kernel, an iSCSI instance may be running. Before installing the
iSCSI driver, you must stop the instance.
To stop the instance:
1. Run setup.
2. Deselect iSCSI.
3. Reboot the system.
See the Readme file in the tar ball for more information on configuring the iSCSI Initiator.
To install the iSCSI driver:
1. Use tar(1) to decompress the source archive into a directory of your choice. The archive contains
a subdirectory corresponding to the archive name. Use the following commands to decompress the
source archive:
cd /usr/src
tar xvzf /path/to/linux-iscsi-version.tgz
cd linux-iscsi-<version>
2. Compile the iSCSI driver. If your kernel sources are not in the usual place, add
TOPDIR=/path/to/kernel or edit the definition of TOPDIR in Makefile.UsetheMake
command to edit Makefile.
3. Install the driver as root. If you are currently using the iSCSI driver, first unmount all iSCSI devices
and unload the old iSCSI driver. If your Linux distribution includes an iSCSI driver, it may be
necessary to uninstall that package first.
4.
Configure the driver . See Installing and configuring for RedHat 3, 4 and SuSE 8 and 9, page 78.
Assigning device names
Because Linux assigns SCSI device nodes dynamically whenever a SCSI logical unit is detected, the
mapping from device nodes such as /dev/sda or /dev/sdb to iSCSI targets and logical units m ay vary.
Variations in process scheduling and network delay can result in iSCSI targets being mapped to different
SCSI device nodes every time the driver is started. Because of this variability, configuring applications or
operating system utilities to use the standard SCSI device nodes to access iSCSI devices can result in
sending SCSI commands to the wrong target or logical unit.
To provide consistent naming, the iSCSI driver scans the system to determine the mapping from SCSI
device no des to iSCSI targets. The iSCSI driver creates a tree of directories and symbolic links under
/dev/iscsi to make it easier to use a particular iSCSI target's logical unit.
The directory tree under /dev/iscsi contains subdirectories for each iSCSI bus number, each target id
number on the bus, and each logical unit number for each target. For example, the whole disk device for
bus 0, target ID 0,andLUN 0 would be /dev/iscsi/bus0/target0/LUN0/disk.
In each logical unit directory there is a symbolic link for each SCSI device node that can be connected to
that par ticular logical unit. These symbolic links are modeled after the Linux devfs naming convention:
• The s ymbolic link disk mapstothewhole-diskSCSIdevicenodesuchas/dev/sda or /dev/sdb.
• The symbolic links part1 through part15 maps to each partition of that SCSI disk. For example, a
symbolic link can map to partitions /dev/sda1, dev/sda15, or to as many partitions as necessary.
EVA iSCSI connectivity user guide
79
- HP StorageWorks 1
- Contents 3
- About t his guide 17
- Document conven 18
- Rack stability 18
- HP technical suppor t 19
- Subscription service 19
- Other HP websites 19
- About this guide 20
- 1OverviewoftheEVAand 21
- Storage System 22
- Hardware support 25
- Software support requirements 26
- Secur ity 28
- Business C opy 28
- 2Configuration rules and 29
- Operating systems supported 30
- Initiator rules 31
- Windows iSCSI In 32
- OpenVMS hardware requirements 33
- Supported featu 36
- HP Command View E 37
- Supported IP network adapters 37
- IP network requirem ents 38
- Adds a second mpx100 40
- Field direct con 42
- Rack mounting the mpx100/100b 43
- Starting the mp 45
- StorageWorks Command View EVA 45
- Figure 12 H 47
- 8. Enter the I 47
- 4Configurin g the mpx 100/100b 49
- Power LED (green) 50
- Heartbeat LED (g reen) 50
- System Fault LED (amber) 50
- Maintenance button 51
- FC ports 52
- Transceivers 53
- Management Eth 54
- Serial port 54
- Installation and maintenance 55
- Setting the server IP address 56
- Configuring the mpx100/100b 58
- Configuring the 60
- (optional) 60
- Configuring the mpx100/100 b 64
- (single-path 68
- Figure 25 Discover targets 69
- (Figure 26) 69
- Assigning device names 79
- Target bindings 80
- Unmounting file systems 81
- -i iscsi 83
- Initiator using the CLI 84
- Accessing iSCSI disks 85
- Configuring TCP/ 90
- IP services 90
- Configuring VL ANs 90
- Configuring target discovery 90
- Starting th e iSCSI Initiator 92
- Stopping the iSCSI Initiator 92
- Overview 95
- The mpx100/100b perspective 96
- 50:05:08:b4:01:01:f6:78 97
- 50:05:08:b4:01:01:f6:7c 97
- Figure 49 Add Features page 101
- Microsoft MPIO 107
- (see Figure 62) 111
- Managing multipathing 113
- MPxIO overview 116
- Setting configu 117
- Verifying confi 119
- Verifying that a 120
- EVA iSCSI Connectivity 121
- Option release notes 121
- Verify mpath-s 122
- Displaying path information 124
- Manual path switching 125
- Disk Arrays 126
- HPDM Multipath restrictions 127
- 7UsingHPCommandViewEVAto 129
- View EVA 131
- Command View EVA 131
- 8 iSCSI Boot from SAN 133
- HP iSCSI 133
- Boot for Wi 133
- QLogic iSCSI Host Bus adapter 134
- QLogic BIOS Readme 135
- 3. Shut down the host 136
- Initiator Upgrade License 137
- Installing t 138
- Upgrade Lic 138
- A Command line interface 141
- Admin command 142
- Beacon command 143
- Date command 143
- Clear command 144
- FRU command 144
- Help command 145
- History comman 147
- Image command 147
- Initiator command 147
- Logout command 148
- LUNmask command 148
- Password command 150
- Ping command 151
- Quit command 151
- Reboot comm and 151
- Reset command 152
- Save command 152
- Set command 152
- Set CHAP comma 153
- Set FC command 153
- Set Features command 154
- Set iSCSI command 154
- Set iSNS command 155
- Set MGMT command 156
- Set NTP command 156
- Set Properties 157
- Set SNMP command 157
- Set System command 158
- Set VLAN comm 158
- Show command 158
- Show Chap command 159
- Show Features command 160
- Show Logs Command 160
- Show LUNinfo 160
- Show Perf command 160
- Show Properties command 161
- Show System command 161
- Show MGMT comma 162
- Show iSCSI command 162
- Show FC command 162
- Show Initiators command 163
- Show iSNS command 164
- Show LUNs command 164
- Show LUN Mask command 165
- Show NTP command 166
- Show SNMP comma 167
- Show Stats command 168
- Show Targets command 171
- Show VLAN comma 172
- Target command 172
- Chassis diag 173
- Power-on self-t 174
- Initiator 175
- Troubleshoo 176
- HP Command View EVA refresh 177
- CLogdata 179
- Fibre Channel driver 180
- Err or log messag 181
- ID Log message Mes 182
- Description 182
- User modules 186
- Fatal log messages 187
- FC driver 189
- Protocol 191
- D Simple Net work Management 191
- Management Information Base 192
- Network port table 193
- FC port table information 195
- Sensor table 197
- Notifications 199
- E Setting up a uthen tication 203
- Setting up authentication 204
- Enabling singl 205
- Enabling bi 209
- F S aving an d restorin g the 213
- G Regul atory compliance and 217
- Regulatory comp 218
- Laser device 218
- European Union notice 219
- BSMI notice 219
- Japanese notice 219
- Batter y repl 220
- Power cords 220
- Japanese power cord statement 221
- Glossary 223
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