Geographic Edition Properties for Availability Suite
This appendix provides the properties of Geographic Edition data replication device groups.
This appendix contains the following sections:
Availability Suite Properties
The following table describes the Availability Suite properties that the Geographic Edition software
defines.
Table A-1 Availability Suite Properties
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Device Group Property: Enable_volume_set (Boolean)
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Defines whether the volume sets and
fallback snapshots that are defined in the
/var/cluster/geo/avs/AVS-device-group-volset.ini and
the
/var/cluster/geo/avs/AVS-device-group-snapshot.ini
files are enabled by the Geographic Edition software when the device group is added to a protection
group. Set to either true or false.
Tuning recommendations: This property cannot be tuned after the device group is added to a
protection group.
Category: Optional
Default: false
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Device Group Property: Local_logical_host (string)
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Defines the local logical hostname that is used for the replication of the device group. Do
not use an underscore (_) character in the logical hostname.
Tuning recommendations: This property cannot be tuned after the device group is added to a
protection group.
Category: Required
Default: None
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Protection Group Property: Nodelist (string array)
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Lists the host names of the machines that can be primary for the device group in the
protection group. Device groups in the protection group must share the same ordered node list. This
list is comma delimited.
Tuning recommendations: This property can be tuned only when the protection group is
offline.
Category: Optional
Default: All nodes in the cluster
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Data Replication Property: Remote_logical_host (string)
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Defines the remote logical hostname that is used for the replication of the device group. Do
not use an underscore (_) character in the logical hostname.
Tuning recommendations: This property cannot be tuned after the device group is added to a
protection group.
Category: Required
Default: None
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Replication Resource Property: Snapshot_volume (string array)
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Defines all fallback snapshots
automatically enabled by Geographic Edition software for the secondary volumes in a single device group.
A fallback snapshot is a compact dependent shadow volume created on the secondary cluster
immediately prior to the resynchronization of a secondary volume, from which the secondary volume
can be reconstructed if resynchronization fails.
This Snapshot_volume property is set on the Availability Suite replication resource
AVS-device-group-rep-rs that is automatically created
for a device group when it is added to a protection group. The value of the property is an array
containing multiple entries: one for every volume in the device group for which a fallback snapshot
is configured. Entries are in the form master_vol:shadow_vol:bitmap_shadow_vol
where master_vol specifies one replicated volume in the device group for which a
fallback snapshot is enabled, shadow_vol specifies a shadow volume, and
bitmap_shadow_vol specifies the bitmap volume for the shadow volume. Full path
names are required and all three volumes must be in the same device group.
Tuning recommendations: This property can be tuned any time.
Category: Optional
Default: None
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Geographic Edition Resource Properties for Availability Suite That Must Not Be Changed
The Geographic Edition software internally changes some properties for the
SUNWscgrepavs resource type. Therefore, you must not edit these properties
manually.
For Availability Suite, do not edit the following properties:
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Device_group – Specifies the Oracle Solaris Cluster device group that
contains the volumes that are being replicated.
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Remote_logical_host – Defines the remote logical hostname that is
used for the replication of the device group.
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Role – Local data replication role.