Emulex LightPulse LPe1105-M4 HBA Guía de instalación Pagina 168
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EMC Host Connectivity with Emulex FC HBAs and FCoE CNAs for the Linux Environment
Special Instructions
CLARiiON “Ghost” LUN reported with the Emulex v7.1.14 and
v7.3.2 drivers (PQB filter)
EMC supports the Emulex v7.1.14 driver that is integrated into the
RHEL 3.0 U4 (v2.4.21-27.EL) and U5 (v2.4.21-32.EL) kernels and the
Emulex v7.3.2 driver that is integrated into RHEL: 3.0 U6. When
using these quarterly updates and the integrated Emulex driver,
parameter value modifications must be made via an edit to
/etc/modules.conf, rather than lpfc.conf.
When running these RHEL 3.0 quarterly updates in CLARiiON
environments, it is highly recommended that the lpfc_inq_pqb_filter
parameter be enabled. In certain environments, there have been cases
where the SCSI mid-layer exits a SCSI disk scan incorrectly or
prematurely due to a mishandling of the response from the
INQUIRY
command.
The following are symptoms of this issue:
1. When an initiator is zoned to multiple targets on the same
CLARiiON storage system, the scan of the SCSI bus will succeed
and the list of devices on the first initiator-target pair will be
enumerated. However, the SCSI bus scan is not issued on any
targets, other than the first. The premature exit of the SCSI bus
scan results in the reporting of a “ghost” LUN for each instance of
a failed initiator-target pair, as well as an incomplete enumeration
of the available disks using the failed initiator-target pairs, and
the unavailability of target-side failover.
2. If a SCSI host initiator is zoned to only one target on a CLARiiON
storage system, the initiator incorrectly enumerates a "ghost"
LUN in addition to the actual devices in the host Storage Group.
The CLARiiON “ghost” LUN is reported in the
/proc/scsi/scsi file
as a DGC Direct-Access device, but no Model type is displayed.
An example of this incorrect reporting is shown below:
more /proc/scsi/scsi
Host: scsi2 Channel: 00 Id: 00 Lun: 00
Vendor: DGC Model: RAID 5 Rev: 0207
Type: Direct-Access ANSI SCSI revision: 04
Host: scsi2 Channel: 00 Id: 00 Lun: 01
Vendor: DGC Model: RAID 5 Rev: 0207
Type: Direct-Access ANSI SCSI revision: 04
- -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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