Emulex LightPulse LPe1105-M4 HBA Installationsanleitung Seite 169
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CLARiiON “Ghost” LUN reported with the Emulex v7.1.14 and v7.3.2 drivers (PQB filter)
169
Special Instructions
Host: scsi2 Channel: 00 Id: 00 Lun: 02
Vendor: DGC Model: RAID 5 Rev: 0207
Type: Direct-Access ANSI SCSI revision: 04
Host: scsi2 Channel: 00 Id: 00 Lun: 03
Vendor: DGC Model: RAID 5 Rev: 0207
Type: Direct-Access ANSI SCSI revision: 04
Host: scsi2 Channel: 00 Id: 00 Lun: 04
Vendor: DGC Model: RAID 5 Rev: 0207
Type: Direct-Access ANSI SCSI revision: 04
Host: scsi2 Channel: 00 Id: 01 Lun: 00
Vendor: DGC Model: Rev: 0207
Type: Direct-Access ANSI SCSI revision: 04
Due to the existence of the “ghost” LUN, PowerPath failover does not
function properly and can result in an all paths down scenario. By
enabling the parameter, the driver is instructed to change the
peripheral qualifier bit from 1 to 3 for an INQUIRY response. As a
result, the SCSI mid-layer will handle the INQUIRY response
correctly and, subsequently, will enumerate the disks for each
initiator-target pair correctly.
This behavior has not occurred in Symmetrix environments and,
therefore, enabling the
lpfc_inq_pqb_filter parameter is not
required in said environments.
Enabling the lpfc_inq_pqb_filter parameter
1. In order to enable this parameter, the options line for the lpfc
driver should be appended to the
/etc/modules.conf file.
The following is an example of
/etc/modules.conf file for a
RHEL 3.0 U4, U5, or U6 system using the integrated Emulex
driver with the
lpfc_inq_pqb_filter parameter enabled:
alias parport_lowlevel parport_pc
alias scsi_hostadapter sym53c8xx
alias scsi_hostadapter1 lpfc
alias scsi_hostadapter2 lpfc
alias eth0 tlan
options scsi_mod max_scsi_luns=255 scsi_allow_ghost_devices=1
options lpfc lpfc_topology=0x02 lpfc_inq_pqb_filter=1
2. Create a new ramdisk to reflect the changes made.
cd /boot
mkinitrd –v initrd-
$1
.img
$1
where
$1
is the currently running v2.4.x kernel version.
- -508-435-1000 1
- Contents 3
- Emulex Driver 4
- Chapter 8 Additional Notes 6
- ◆ Linux operating environment 9
- ◆ Emulex adapters and drivers 9
- Courier italic 11
- Introduction 13
- Purpose of this document 14
- Host connectivity 14
- Boot device support 15
- Installation Steps 19
- Linux distribution of choice 21
- Summary of installation steps 22
- Installing the adapter 24
- Adapter edge connectors 28
- PCI Express slots 29
- PCI Express slots aligned 29
- Installing and 31
- Configuring the BIOS 31
- Settings 31
- LP1102 Emulex banner 32
- Updating the boot BIOS 33
- LP6DUTIL.EXE) 37
- LP6DUTIL.EXE program file 37
- 7.x driver) 38
- Installing and 43
- Configuring the Linux 43
- Host with the Emulex 43
- SLES 9, SLES 10, and SLES 11 52
- /sys filesystem 58
- ...Restoring 83
- Cleaning up 86
- ./hbanyware 86
- * If PEMC owerPath 88
- ◆ Miracle Linux v4.0 92
- ◆ RedFlag DC Server 5.0 92
- 4 and RHEL 5” on page 91 93
- Updating the Adapter 97
- Firmware 97
- FCoE adapters 102
- Connecting to the 109
- Planning procedure 110
- Enabling persistent binding 111
- Connecting to the Storage 112
- Editing /etc/modules.conf 114
- Network Settings window 117
- Configuring a Boot 121
- Device on an EMC 121
- Storage Array 121
- Limitations 124
- /dev/sda by the Linux 125
- Preparing the host 128
- CLARiiON 136
- Emulex v7.x-Series driver 138
- Application Kit 141
- Do you have a driver disk 142
- Driver Update OK 143
- Upgrading the Linux kernel 145
- Additional Notes 147
- Rebooting the host 151
- HPQ server-specific note 155
- Block device file names 157
- Red Hat distributions 158
- SuSE distributions 158
- PowerPath examples 159
- Character device file names 159
- Echoing the /proc filesystem 163
- Rescanning the SCSI bus 164
- Special Instructions 167
- For example: 170
- 3. Reboot the host 170
- • For SuSE distributions use: 173
- Example: 173
- 4. Reboot the host 173
- 2.1 Intel Itanium systems 178
- 3.0 Intel Itanium systems 179
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