Veritas Dynamic Multi-Pathing 6.0.1 Administrator's Guide - Linux

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  • Article ID:000003389


Veritas™ Dynamic Multi-Pathing 6.0.1 Administrator's Guide - Linux


1. Understanding DMP
About Veritas Dynamic Multi-Pathing (DMP)
How DMP works
How DMP monitors I/O on paths
Load balancing
DMP in a clustered environment
Multiple paths to disk arrays
Device discovery
Disk devices
Disk device naming in DMP
About operating system-based naming
About enclosure-based naming
2. Setting up DMP to manage native devices
About setting up DMP to manage native devices
Migrating LVM volume groups to DMP
Migrating to DMP from EMC PowerPath
Migrating to DMP from Hitachi Data Link Manager (HDLM)
Migrating to DMP from Linux Device Mapper Multipath
Using Dynamic Multi-Pathing (DMP) devices with Oracle Automatic Storage Management (ASM)
Enabling Dynamic Multi-Pathing (DMP) devices for use with Oracle Automatic Storage Management (ASM)
Removing Dynamic Multi-Pathing (DMP) devices from the listing of Oracle Automatic Storage Management (ASM) disks
Migrating Oracle Automatic Storage Management (ASM) disk groups on operating system devices to Dynamic Multi-Pathing (DMP) devices
Adding DMP devices to an existing LVM volume group or creating a new LVM volume group
Displaying the native multi-pathing configuration
Removing DMP support for native devices
3. Administering DMP
About enabling and disabling I/O for controllers and storage processors
About displaying DMP database information
Displaying the paths to a disk
Setting customized names for DMP nodes
Administering DMP using vxdmpadm
Retrieving information about a DMP node
Displaying consolidated information about the DMP nodes
Displaying the members of a LUN group
Displaying paths controlled by a DMP node, controller, enclosure, or array port
Displaying information about controllers
Displaying information about enclosures
Displaying information about array ports
Displaying information about TPD-controlled devices
Displaying extended device attributes
Suppressing or including devices from VxVM control
Gathering and displaying I/O statistics
Setting the attributes of the paths to an enclosure
Displaying the redundancy level of a device or enclosure
Specifying the minimum number of active paths
Displaying the I/O policy
Specifying the I/O policy
Disabling I/O for paths, controllers, array ports, or DMP nodes
Enabling I/O for paths, controllers, array ports, or DMP nodes
Renaming an enclosure
Configuring the response to I/O failures
Configuring the I/O throttling mechanism
Configuring Subpaths Failover Groups (SFG)
Configuring Low Impact Path Probing
Displaying recovery option values
Configuring DMP path restoration policies
Stopping the DMP path restoration thread
Displaying the status of the DMP path restoration thread
Configuring array policy modules
4. Administering disks
About disk management
Discovering and configuring newly added disk devices
Partial device discovery
Discovering disks and dynamically adding disk arrays
Third-party driver coexistence
How to administer the Device Discovery Layer
Changing the disk device naming scheme
Displaying the disk-naming scheme
Regenerating persistent device names
Changing device naming for TPD-controlled enclosures
Discovering the association between enclosure-based disk names and OS-based disk names
5. Dynamic Reconfiguration of devices
About online Dynamic Reconfiguration
Reconfiguring a LUN online that is under DMP control
Removing LUNs dynamically from an existing target ID
Adding new LUNs dynamically to a new target ID
Replacing LUNs dynamically from an existing target ID
Changing the characteristics of a LUN from the array side
Replacing a host bus adapter online
Upgrading the array controller firmware online
6. Event monitoring
About the Dynamic Multi-Pathing (DMP) event source daemon (vxesd)
Fabric Monitoring and proactive error detection
Dynamic Multi-Pathing (DMP) discovery of iSCSI and SAN Fibre Channel topology
DMP event logging
Starting and stopping the Dynamic Multi-Pathing (DMP) event source daemon
7. Performance monitoring and tuning
About tuning Veritas Dynamic Multi-Pathing (DMP) with templates
DMP tuning templates
Example DMP tuning template
Tuning a DMP host with a configuration attribute template
Managing the DMP configuration files
Resetting the DMP tunable parameters and attributes to the default values
DMP tunable parameters and attributes that are supported for templates
DMP tunable parameters

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