Content-type: text/html Man page of device_remap

device_remap

Section: System Administration Commands (1M)
Updated: 24 Dec 2008
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NAME

device_remap - administer the Solaris I/O remapping feature  

SYNOPSIS

/usr/platform/sun4v/sbin/device_remap [-v | -R dir]

 

DESCRIPTION

Certain multi-node sun4v platforms, such as T5440 and T5240 servers, have an integrated PCI topology that cause the I/O device paths to change in a CPU node failover condition. The device remapping script, device_remap, remaps the device paths in /etc/path_to_inst file and the symlinks under /dev to match the hardware.  

OPTIONS

The following options are supported:

-v

Displays the /etc/path_to_inst and /dev symlink changes.

-R dir

Perform remapping on the /etc/path_to_inst and /etc/path_to_inst files in the root image at dir.

 

USAGE

The primary function of device_remap is to remap the device paths in the /etc/path_to_inst file and the symlinks under /dev in a CPU node failover condition to match the hardware.

After adding CPU node(s) or removing CPU node(s), boot the system to the OBP prompt and use the following procedure:

1.
Boot either the failsafe miniroot using: boot -F failsafe , or an install miniroot using boot net -s or similar command.
2.
Mount the root disk as /mnt.
3.
Change directory to the mounted root disk:

# cd /mnt

4.
Run device_remap script:

# /mnt/usr/platform/sun4v/sbin/device_remap

5.
Boot the system from disk.

All the error messages are self-explanatory, except for the error message "missing ioaliases node" which means the firmware on the system does not support device remapping.  

EXAMPLES

Example 1 Displaying Changes Following Failover

The following command displays the path_to_inst and /dev changes following a CPU node failover.

# device_remap -v

Example 2 Changing Directory Prior to Any Changes

The following command changes the directory on which the boot image is mounted prior to making any changes.

# device_remap -R /newroot

 

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE

AvailabilitySUNWkvm.v

Interface Stability

 

SEE ALSO

boot(1M), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
USAGE
EXAMPLES
ATTRIBUTES
SEE ALSO

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Time: 02:37:09 GMT, October 02, 2010