A Environment File Variables for Serviceguard Integration with Continuous Access P9000 or XP

This appendix lists all Environment File variables that have been modified or added for disaster tolerant Serviceguard solutions that employ Continuous Access P9000 or XP. It is recommended 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 will cause 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 will ensure that the application will

 

be 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 will be 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.

 

If the package has been configured for a three data center

 

environment, this parameter is applicable only when the

 

package is attempting to start up in either the primary (DC1)

 

or secondary (DC2) data center. This parameter is not

 

relevant in the recovery cluster or the third data center. Use

 

this parameter’s default value in the third data center.

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 will apply 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:

475