3.6.0 Matrix Server 3.6.0 Administration Guide (5697-7081, December 2007)

Chapter 19: SAN Maintenance 251

Recid 258: 20:00:00:04:cf:13:3c:92::0 psd2

Host registry entries:

Host ID: 10.10.30.4 fencestatus=0

SAN Loc:10:00:00:00:c9:2d:27:7d::0 idstatus=0 (switch=fcswitch5)

Host ID: 10.10.30.3 fencestatus=0

SAN Loc:10:00:00:00:c9:2d:27:78::0 idstatus=0 (switch=fcswitch5)

Search the SAN for Membership Partitions. To search the SAN for all

partitions that appear to be membership partitions, type this command:

mprepair --search_mps

The output includes each membership partition found by the search and

specifies whether it is active or inactive. The output also includes the

membership list on the disk containing the partition and the database

records for the partitions.

Resilver Membership Partitions. Typically, Matrix Server writes data to

one membership partition and then copies, or resilvers, that data to the

other membership partitions. Resilvering takes place automatically when

a change is made to the device naming database or when you add,

remove, or replace a membership partition.

However, in certain situations you may need to perform the resilver

operation manually. For example, a membership partition might become

corrupt or a local membership list might become out of date.

The --resilver operation requires that you specify a good membership

partition. The other membership partitions are then resilvered from that

partition. Type the following command:

mprepair --resilver <uuid/partno>

<uuid> is the UUID for the device and <partno> is the number of the

partition on the device.

NOTE: If you resilver from a partition that has a status of RESILVER, the

operation may initialize partitions that are not currently

membership partitions; any existing data on those partitions will

be overwritten. Use the --display_mplists option to see the

membership partition lists for the current membership partitions.