HP StorageWorks Continuous Access EVA Administrator Guide (T3687-96043, December 2005)

NOTE:
This procedure is not supported for unplanned failovers. The term "bootless" m eans that a fter the
LUNs are first presented to a destination host, which requires an initial reboot, no further reboot of
that host should be required.
Source host procedure
Perform one of the following steps on the source host, depending on whether or not you are running
LifeKeeper 4.4.3.
1. If you are running LifeKeeper 4.4.3, proceed to step 2. If you are not running LifeKeeper, perform
the following ste ps:
a. From your source host, stop I/O to your LUNs. Allow enough time for the I/O to complete
before proceeding to the next step.
b. Unmount the volumes contained in the DR group.
Example: unmount /mounts/lvol1
c. Change the status of the LUN s to inactive with the following com ma nd:
vgchange VolumeGroupName –a n
Example: vgchange vg01 –a n
d. Make the group u n known to the system with the vgexport command.
Example: vgexport vg01
e. Perform a failov er of the DR group using the HP Continuous Access EVA user interface.
f. D epending on the number of LUNs, do one of the following to prevent Secure Path from
detecting a failed disk:
• For individual LUNs, run spmgr quiesce –p path (for each path visible to the LUNs.
•ForallLUNsatonce,runspmgr set –p off. This method will turns off
path verification for all LUNs still visible to the system.
2. If you are running LifeKeeper 4.4.3 clusters:
a. Bring your resources "out of service" with the LifeKeeper G UI.
b. From the system console:
i. Enter the mount command to verify the volume is unmounted.
ii. Enter the vgscan command to verify that the volume group is exported.
c. Perform a failover of the DR group with the HP Continuous Access EVA user interface.
d. Depending on the number of LUNs, do one of the following to prevent Secure Path from
detecting a failed disk:
• For individual LUNs, run spmgr quiesce –p path (for each path visible to the
LUNs).
•ForallLUNsatonce,runspmgr set –p off. This method will turns off
path verification for all LUNs still visible to the system.
Destination host procedure
If this is the first time that LUNs are being presented to the destination host, reboot the host to pick up
the new LUNs. If a reboot is not required (LUNs have b een previously presented) , and the paths are
quiesced, issue the spmgr restart all command to unquiesce the paths.
HP StorageWorks Continuous Access EVA administrator guide
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