Enabling And Disabling Multipathing In The Solaris Operating System; Device Renaming; Stmsboot Options - Sun Microsystems J4200 System Overview Manual

Enabling and Disabling Multipathing in
the Solaris Operating System
This sections describes how to enable and disable multipathing in the Solaris 10,
update 6, operating system.
Use the stmsboot command to enable multipathing in the Solaris 10, update 6,
operating system. stmsboot manages enumeration of multipath–capable devices
with multipathing; it has these characteristics:
Multipathing-enabled devices are enumerated under scsi_vhci(7D).
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Multipathing-disabled devices are enumerated under the physical controller.
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This section describes the stmsboot(1M) administration program for multipathing.

Device Renaming

In the /dev and /devices trees, multipathing-enabled devices receive new names
that indicate that they are under multipathing control.
This means a device has a different name from its original name (after enabling)
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when it is under multipathing control.
The stmsboot command automatically updates /etc/vfstab and dump
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configuration to reflect the device names changes when enabling or disabling
Multipathing.
One reboot is required for changes to take effect.
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stmsboot Options

TABLE 5-3
stmsboot Options
TABLE 5-3
-e [-D fp | mpt]
56 Sun Storage J4200/J4400 Array System Overview • June 2009
describes the options supported by stmsboot(1M).
Enables multipathing on all supported multipath-capable controller ports.
• Multipath-capable ports include SAS (mpt[7D]) controller ports.
• Prompts you to reboot.
• During reboot, vfstab and the dump configuration update to reflect the
device-name changes.
• Specifying -D mpt limits the enabling operation to ports attached using the
specified driver.