Table Of Contents - Red Hat DEVICE-MAPPER MULTIPATH 4.6 Configuration And Administration Manual

Preface .................................................................................................................... vii
1. Audience ...................................................................................................... vii
2. Related Documentation ................................................................................. vii
3. Feedback .................................................................................................... viii
4. Document Conventions ................................................................................ viii
1. Device Mapper Multipathing .................................................................................... 1
1. Overview of DM-Multipath ............................................................................... 1
2. Storage Array Support .................................................................................... 4
3. DM-Multipath Components ............................................................................. 4
4. DM-Multipath Setup Overview ......................................................................... 5
2. Multipath Devices ................................................................................................... 7
1. Multipath Device Identifiers ............................................................................. 7
2. Consistent Multipath Device Names in a Cluster .............................................. 7
3. Multipath Device Attributes ............................................................................. 8
4. Multipath Devices in Logical Volumes .............................................................. 8
3. Setting Up DM-Multipath ........................................................................................11
1. Setting Up DM-Multipath ................................................................................11
2. Ignoring Local Disks when Generating Multipath Devices ................................12
3. Adding Devices to the Multipathing Database .................................................14
4. The DM-Multipath Configuration File ......................................................................15
1. Configuration File Overview ...........................................................................15
2. Configuration File Blacklist .............................................................................16
2.1. Blacklisting by WWID .........................................................................16
2.2. Blacklisting By Device Name ...............................................................17
3. Configuration File Defaults .............................................................................17
4. Multipaths Device Configuration Attributes ......................................................20
5. Configuration File Devices .............................................................................22
5. DM-Multipath Administration and Troubleshooting ...................................................27
1. Multipath Command Output ...........................................................................27
2. Multipath Queries with multipath Command ....................................................28
3. Multipath Command Options ..........................................................................28
4. Determining Device Mapper Entries with the dmsetup Command .....................29
5. Troubleshooting with the multipathd Interactive Console ..................................29
Index .......................................................................................................................31
v