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ETERNUS Multipath Driver V2
FUJITSU ETERNUS Multipath Driver V2 Manuals
Manuals and User Guides for FUJITSU ETERNUS Multipath Driver V2. We have
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FUJITSU ETERNUS Multipath Driver V2 manual available for free PDF download: User Manual
FUJITSU ETERNUS Multipath Driver V2 User Manual (140 pages)
Brand:
FUJITSU
| Category:
Storage
| Size: 0.87 MB
Table of Contents
Intended Audience
3
Typographical Conventions
6
Table of Contents
25
Chapter 1 What Is Multipath Driver
32
Features
32
Connections
33
Figure 1.1 Sample Multipath Connection
33
Chapter 2 Multipath Driver System Setup
34
Accessing the Storage System Disks
34
Using the Udev Function
34
When Using FUJITSU Software PRIMECLUSTER Global Disk Services (Storage System Recognition Order Setting)
35
Multipath Driver Related Log
37
Chapter 3 Multipath Driver Functions and Operation
38
Path Management
39
Path Status
39
Table 3.1 Path Status Values
39
Figure 3.1 Path Status Transitions
40
Table 3.2 Online Path Sub-States
40
Checks and Path Status Transitions
42
Check in Active/Standby
42
Check in Warning
42
Load Balancing/Failover
44
Load Balancing
44
Figure 3.2 2-Path Load Balancing on a Storage System with CM Assigned
44
Figure 3.3 4-Path Load Balancing on a Storage System with CM Assigned
45
Figure 3.4 Multipath Load Balancing on a Storage System with CM Not Assigned
45
Failover
46
Figure 3.5 2-Path Failover on a Storage System with CM Assigned
46
Figure 3.6 4-Path Failover, Active to Active
47
Figure 3.7 4-Path Failover, Active to Standby
47
Figure 3.8 Multipath Failover, a Storage System with CM Not Assigned
48
Identifying Disks and Paths
49
Device Identification
49
Path Identification
49
Table 3.3 Device Identification Example
49
Multipath Status Display
50
Iompadm Info" Command
50
Disconnecting/Reconnecting Paths When Replacing Hardware
51
Iompadm Change" Command
51
Table 3.4 Change Unit Specification
51
Iompadm Restart" Command
52
Multipath Recovery
52
Chapter 4 Changing the Multipath Configuration
54
Storage System and LU Addition
54
Addition Without Server Rebooting
54
Addition with Server Rebooting
56
Storage System and LU Reduction
57
Reduction Without Server Rebooting
57
Reduction with Server Rebooting
58
Path Addition (Cable Addition)
60
Addition Without Server Rebooting
60
Addition with Server Rebooting
61
Path Reduction (Cable Reduction)
62
Reduction Without Server Rebooting
62
Reduction with Server Rebooting
63
Path Addition and Reduction (HBA Addition and Reduction)
64
Changing the Multipath Configuration (SAS Connection for RHEL-AS4, RHEL-ES4, RHEL5, or SLES10)
65
Storage System Addition
66
Addition Without Server Rebooting
66
Addition with Server Rebooting
66
Storage System Reduction
67
Reduction Without Server Rebooting
67
Reduction with Server Rebooting
67
LU Addition
68
LU Reduction
68
Path Addition (Cable Addition)
68
Addition Without Server Rebooting
68
Addition with Server Rebooting
69
Path Reduction (Cable Reduction)
69
Reduction Without Server Rebooting
69
Reduction with Server Rebooting
69
Path Addition and Reduction (HBA Addition and Reduction)
70
Changing the Multipath Configuration
71
(Iscsi Connection for RHEL5, SLES9, or SLES10)
71
Storage System Addition
72
For Red hat Enterprise Linux 5 or SUSE Linux Enterprise Server 10
72
For SUSE Linux Enterprise Server 9
73
Storage System Reduction
74
Reduction Without Server Rebooting
74
Reduction with Server Rebooting
75
LU Addition
76
LU Reduction
76
Path Addition (Cable Addition)
77
For Red hat Enterprise Linux 5 or SUSE Linux Enterprise Server 10
77
For SUSE Linux Enterprise Server 9
78
Path Reduction (Cable Reduction)
79
Reduction Without Server Rebooting
79
Reduction with Server Rebooting
80
Path Addition and Reduction (NIC Addition and Reduction)
81
(Fc/Fcoe Connection for RHEL6, RHEL7, or SLES11)
82
Chapter 7 Changing the Multipath Configuration
83
Storage System Addition
83
Addition Without Server Rebooting
83
Addition with Server Rebooting
83
Storage System Reduction
84
Reduction Without Server Rebooting
84
Reduction with Server Rebooting
85
LU Addition
86
Addition Without Server Rebooting
86
Addition with Server Rebooting
87
LU Reduction
88
Reduction Without Server Rebooting
88
Reduction with Server Rebooting
89
Path Addition (Cable Addition)
90
Addition Without Server Rebooting
90
Addition with Server Rebooting
90
Path Reduction (Cable Reduction)
91
Reduction Without Server Rebooting
91
Reduction with Server Rebooting
92
Path Addition and Reduction (HBA Addition and Reduction)
93
Changing the Multipath Configuration (SAS Connection for RHEL6, RHEL7, or SLES11)
94
Storage System Addition
94
Storage System Reduction
95
Reduction Without Server Rebooting
95
Reduction with Server Rebooting
95
LU Addition
96
LU Reduction
96
Path Addition (Cable Addition)
96
Path Reduction (Cable Reduction)
96
Reduction Without Server Rebooting
96
Reduction with Server Rebooting
97
Path Addition and Reduction (HBA Addition and Reduction)
97
Chapter 9 Changing the Multipath Configuration
98
(Iscsi Connection for RHEL6, RHEL7, or SLES11)
98
Storage System Addition
99
Storage System Reduction
100
Reduction Without Server Rebooting
100
Reduction with Server Rebooting
101
LU Addition
101
LU Reduction
101
Path Addition (Cable Addition)
102
Path Reduction (Cable Reduction)
103
Reduction Without Server Rebooting
103
Reduction with Server Rebooting
104
Path Addition and Reduction (NIC Addition and Reduction)
104
Chapter 10 Notes When Using the Multipath Driver
105
Configuring a Storage System
105
Conditions for Lu Configuration
106
Figure 10.1 Use Identical Luns
106
Figure 10.2 Start from LUN0
107
Considerations for Linux Servers
108
Notes When Installing the Multipath Driver
111
Troubleshooting
113
Frequently Asked Questions
114
Chapter 11 Command Reference
115
Iompadm" Commands
115
Table 11.1 "Iompadm" Command Output Elements
117
Table 11.2 "Iompadm" Command Status Detail Information
117
Mpdconfig" Command
120
Mpd_Snap" Command
124
Appendix A Syslog Messages
125
For Linux
139
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