08-03-2010
Boot Ip is not part of the resource group. Application uses Java RMI and picks up the first address.
Since BootIp is routable in this case, application has no problem to connect to the external resources over this IP.
In case of failover, I believe application will still be fine , as it will pick up boot ip of the failover node (local node) in that case.
I am not sure about what will be happen if the application send a large data over this IP . Will this cause heart beat skips . ?
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LEARN ABOUT OPENSOLARIS
device_remap
device_remap(1M) System Administration Commands device_remap(1M)
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 TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWkvm.v |
+-----------------------------+-----------------------------+
|Interface Stability |Unstable |
+-----------------------------+-----------------------------+
SEE ALSO
boot(1M), attributes(5)
SunOS 5.11 24 Dec 2008 device_remap(1M)