Building Disaster Recovery Serviceguard Solutions Using Metrocluster with Continuous Access XP P9000 for Linux B.01.00.00

B Package attributes for Metrocluster with Continuous Access
XP P9000 for Linux
This appendix lists all Serviceguard package attributes for Metrocluster with Continuous Access
XP P9000 for Linux. HP recommends that you use the default settings for most of these variables,
so exercise caution when modifying them.
AUTO_FENCEDATA_SPLIT (Default = 1)
This parameter applies only when the fence level is set to
DATA, which causes the application to fail if the Continuous
Access link fails or if the remote site fails.
Values:
0 – Do NOT startup the package at the primary site. Require
user intervention to either fix the hardware problem or to
force the package to start on this node by creating the
FORCEFLAG file. Use this value to ensure that the SVOL
data is always current with the trade-off of long application
downtime while the Continuous Access link and/or the
remote site are being repaired.
1 – (DEFAULT) Startup the package at the primary site.
Request the local disk array to automatically split itself from
the remote array. This ensures that the application is able
to startup at the primary site without having to fix the
hardware problems immediately. Note that the new data
written on the PVOL will not be remotely protected and the
data on SVOL is non-current. When the Continuous Access
link and/or the remote site is repaired, you must manually
use the command “pairresync” to re-join the PVOL and
SVOL. Until that command successfully completes, the PVOL
will NOT be remotely protected and the SVOL data will not
be current. Use this value to minimize the down time of the
application with the trade-off of having to manually
resynchronize the pairs while the application is running at
the primary site.
AUTO_NONCURDATA (Default = 0)
This parameter applies when the package is starting up with
possible non-current data under certain Continuous Access
pair states. During failover, this parameter will apply when
the SVOL is in the PAIR or PFUL state and the PVOL side is
in the PSUE, EX_ENORMT, EX_CMDIOE or PAIR (for
Continuous Access Journal) state. During failback, this
parameter is applicable when the PVOL is in the PSUS state
and the SVOL is in the EX_ENORMT or EX_CMDIOE state.
When starting the package in any of the above states, you
run the risk of losing data.
Values:
0 – (DEFAULT) Do NOT startup the application on
non-current data. If Metrocluster/Continuous Access cannot
determine the data is current, it will not allow the package
to start up. (Note: For fence level DATA and NEVER, the
data is current when both PVOL and SVOL are in PAIR state.)
1 – Startup the application even when the data might not
be current.
54 Package attributes for Metrocluster with Continuous Access XP P9000 for Linux