Installation guide

Storage Administration Guide
viii
20. Solid-State Disk Deployment Guidelines 119
20.1. Deployment Considerations ..................................................................................... 119
20.2. Tuning Considerations ............................................................................................ 120
21. Online Storage Management 121
21.1. Fibre Channel ......................................................................................................... 121
21.1.1. Fibre Channel API ....................................................................................... 121
21.1.2. Native Fibre Channel Drivers and Capabilities ............................................... 122
21.2. iSCSI ..................................................................................................................... 123
21.2.1. iSCSI API .................................................................................................... 123
21.3. Persistent Naming .................................................................................................. 123
21.3.1. WWID ......................................................................................................... 124
21.3.2. UUID and Other Persistent Identifiers ............................................................ 125
21.4. Removing a Storage Device .................................................................................... 126
21.5. Removing a Path to a Storage Device ..................................................................... 127
21.6. Adding a Storage Device or Path ............................................................................ 128
21.7. Configuring a Fibre-Channel Over Ethernet Interface ................................................ 129
21.8. Configuring an FCoE Interface to Automatically Mount at Boot ................................... 130
21.9. Scanning Storage Interconnects .............................................................................. 131
21.10. iSCSI Discovery Configuration ............................................................................... 132
21.11. Configuring iSCSI Offload and Interface Binding ..................................................... 133
21.11.1. Viewing Available iface Configurations ......................................................... 133
21.11.2. Configuring an iface for Software iSCSI ....................................................... 135
21.11.3. Configuring an iface for iSCSI Offload ......................................................... 135
21.11.4. Binding/Unbinding an iface to a Portal ......................................................... 136
21.12. Scanning iSCSI Interconnects ................................................................................ 136
21.13. Logging In to an iSCSI Target ............................................................................... 139
21.14. Resizing an Online Logical Unit ............................................................................. 139
21.14.1. Resizing Fibre Channel Logical Units .......................................................... 140
21.14.2. Resizing an iSCSI Logical Unit ................................................................... 140
21.14.3. Updating the Size of Your Multipath Device .................................................. 140
21.15. Adding/Removing a Logical Unit Through rescan-scsi-bus.sh ................................... 142
21.16. Modifying Link Loss Behavior ................................................................................ 142
21.16.1. Fibre Channel ............................................................................................ 142
21.16.2. iSCSI Settings With dm-multipath ........................................................... 143
21.16.3. iSCSI Root ................................................................................................ 145
21.17. Controlling the SCSI Command Timer and Device Status ........................................ 146
21.18. Troubleshooting .................................................................................................... 146
22. Device Mapper Multipathing and Virtual Storage 149
22.1. Virtual Storage ........................................................................................................ 149
22.2. DM-Multipath .......................................................................................................... 149
A. Revision History 151
Glossary 153
Index 155