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Red_Hat_Enterprise_Linux-6-DM_Multipath-en-US
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Red Hat Enterprise Linux 6
DM Multipath
DM Multipath Configuration and Administration
Edition 1
Red Hat Enterprise Linux 6 DM Multipath
DM Multipath Configuration and Administration
Edition 1
Legal Notice
Copyright © 20 14 Red Hat, Inc. and others.
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Abstract
This bo o k pro vides info rmation on using the Device-Mapper Multipath feature of Red Hat
Enterprise Linux 6.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents
Preface
1. Aud ience
2. Related Do cumentatio n
3. We Need Feed b ack!
4. Do c ument Co nventio ns
4.1. Typ o g rap hic Co nventio ns
4.2. Pull-q uo te Co nventio ns
4.3. No tes and Warning s
Chapt er 1 . Device Mapper Mu lt ip at hing
1.1. New and Chang ed Features
1.1.1. New and Chang ed Features fo r Red Hat Enterp ris e Linux 6 .0
1.1.2. New and Chang ed Features fo r Red Hat Enterp ris e Linux 6 .1
1.1.3. New and Chang ed Features fo r Red Hat Enterp ris e Linux 6 .2
1.1.4. New and Chang ed Features fo r Red Hat Enterp ris e Linux 6 .3
1.1.5. New and Chang ed Features fo r Red Hat Enterp ris e Linux 6 .4
1.1.6 . New and Chang ed Features fo r Red Hat Enterp rise Linux 6 .5
1.1.7. New and Chang ed Features fo r Red Hat Enterp ris e Linux 6 .6
1.2. O verview o f DM-Multip ath
1.3. Sto rag e Array Sup p o rt
1.4. DM-Multip ath Co mp o nents
1.5. DM-Multip ath Setup O verview
Chapt er 2 . Mult ipat h Devices
2.1. Multip ath Devic e Id entifiers
2.2. Co nsistent Multip ath Device Names in a Cluster
2.3. Multip ath Device Attrib utes
2.4. Multip ath Devices in Lo g ic al Vo lumes
Chapt er 3. Set t ing Up DM- Mult ipat h
3.1. Setting Up DM-Multip ath
3.2. Ig no ring Lo cal Disks when G enerating Multip ath Devic es
3.3. Co nfig uring Sto rag e Devic es
3.4. Setting Up Multip athing in the initramfs File Sys tem
Chapt er 4 . T he DM- Mult ipat h Co nfigu rat io n File
4.1. Co nfig uratio n File O verview
4.2. Co nfig uratio n File Blac klis t
4.2.1. Blac klis ting b y WWID
4.2.2. Blac klisting By Devic e Name
4.2.3. Blac klisting By Devic e Typ e
4.2.4. Blac klist Excep tio ns
4.3. Co nfig uratio n File Defaults
4.4. Multip aths Device Co nfig uratio n Attrib utes
4.5. Co nfig uratio n File Devices
Chapt er 5. DM- Mult ipat h Administ rat ion and T roublesho ot ing
5.1. Res izing an Online Multip ath Devic e
5.2. Mo ving ro o t File Sys tems fro m a Sing le Path Devic e to a Multip ath Devic e
5.3. Mo ving s wap File Systems fro m a Sing le Path Device to a Multip ath Device
5.4. The Multip ath Daemo n
5.5. Issues with Larg e Numb er o f LUNs
5.6 . Issues with q ueue_if_no _p ath feature
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T able of Cont ent s
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