Red Hat DEVICE-MAPPER MULTIPATH 5.2 Uživatelský manuál

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FUJITSU Storage
ETERNUS DX
Configuration Guide -Server Connection-
(Fibre Channel/FCoE/iSCSI/SAS) for Linux
device-mapper multipath
P3AM-3912-21ENZ0
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Strany 1 - ETERNUS DX

FUJITSU StorageETERNUS DXConfiguration Guide -Server Connection-(Fibre Channel/FCoE/iSCSI/SAS) for Linuxdevice-mapper multipathP3AM-3912-21ENZ0

Strany 2

The "product" value varies depending on the ETERNUS DX that is to be connected.Refer to the following table for the appropriate value.ETERNU

Strany 3 - April 2015

2.2 Checking the device-mapper multipathAfter they have been enabled, confirm the device-mapper multipath settings.2.2.1 Recognizing the Post device-m

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•Multipath (the "2:0:0:X" side) is in error status (This example shows when two paths are used to connect tothe ETERNUS DX80)# multipath -ll

Strany 5 - Table of Contents

Chapter 3 For Red Hat Enterprise Linux 5This chapter describes how to set up a multipath environment, and the points to be checked after setupwhen the

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3 Add the following lines at the end of the file.• For ETERNUS DX storage systems(This example is for the ETERNUS DX80)devices { device {

Strany 7 - Workflow

3.1.4 Rebooting the Linux ServerReboot the Linux server.Example:# shutdown -r now3.2 Checking the device-mapper multipathAfter they have been enabled,

Strany 8 - Chapter 2

3.2.2 Checking the device-mapper multipath Status and Created DevicesCheck the path status using the "multipath -ll" command. Check that the

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Chapter 4 For SUSE Linux Enterprise Server 12 or SUSE LinuxEnterprise Server 11This chapter describes how to set up a multipath environment, and the p

Strany 10 - # shutdown -r now

Add the following lines at the end of the "devices" section.(This example is for the ETERNUS DX410)devices { device { v

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• For SLES12, if any internal disks are to be excluded from the multipath configuration, make sure tospecify the excluded devices in the "blackl

Strany 12 - # multipath -ll

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Strany 13 - Chapter 3

4.2.1 Recognizing the Post device-mapper multipath LUNsCheck the device file created by the device-mapper multipath.Example:# cd /dev/mapper# ls -ltot

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4.2.2 Checking the device-mapper multipath Status and Created DevicesCheck the path status using the "multipath -ll" command. Check that the

Strany 15 - Example:

Chapter 5 For SUSE Linux Enterprise Server 10This chapter describes how to set up a multipath environment, and the points to be checked after setupwhe

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Add the following lines at the end of the "devices" section.(This example is for the ETERNUS DX410)devices { device { v

Strany 17 - Enterprise Server 11

5.1.1.3 Enabling the device-mapper multipathEnable the device-mapper multipath, using the following commands.# insserv boot.multipath multipathd # chk

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5.1.2 Checking the device-mapper multipathAfter they have been enabled, confirm the device-mapper multipath settings.5.1.2.1 Recognizing the Post devi

Strany 19 - 1 Create an initial RAM disk

5.2 For SUSE Linux Enterprise Server 10 SP2 or Earlier5.2.1 Setting Up the device-mapper multipathSet up the multipath environment.5.2.1.1 Preparation

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• Enter a space between "defaults" and "{".• Enter a space between "devices" and "{".• Enter a space between

Strany 21 - OS version

5.2.1.4 Rebooting the Linux ServerReboot the Linux server.# shutdown -r nowAfter rebooting, the following warning message may appear in the "/var

Strany 22 - Chapter 5

•Multipath (the "5:0:0:X" side) is in error status (This example shows when two paths are used to connect tothe ETERNUS DX410)# multipath -l

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PrefaceThis manual briefly explains the operations that need to be performed by the user in order to connect anETERNUS DX Disk storage system or an ET

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FUJITSU Storage ETERNUS DX Configuration Guide -Server Connection-(Fibre Channel/FCoE/iSCSI/SAS) for Linuxdevice-mapper multipathP3AM-3912-21ENZ0Date

Strany 26 - 5.2.1.1 Preparation

The Contents and Structure of this ManualThis manual is composed of the following five chapters.•"Chapter 1 Workflow" (page 7)This chapter d

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Table of ContentsChapter 1 Workflow 7Chapter 2 For Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 6, or Oracle Li-nux 82.1 Setting Up the dev

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Chapter 5 For SUSE Linux Enterprise Server 10 225.1 For SUSE Linux Enterprise Server 10 SP3 or Later ...

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Chapter 1 WorkflowSet up and check the device-mapper multipath. The workflow is shown below. WorkflowSetting Up the device-mapper multipathSet up the

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Chapter 2 For Red Hat Enterprise Linux 7, Red Hat Enter-prise Linux 6, or Oracle LinuxThis chapter describes how to set up a multipath environment, an

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3 Confirm that the following description is present.## Use user friendly names, instead of using WWIDs as names.defaults { user_friendl

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