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The /etc/lvm/mddb.cf file is created when the metadb(1M)metadb command is invoked. You should never directly edit this file.
The file /etc/lvn/mddb.cf is used by the metainit(1M) command to find the locations of the metadevice state databases replicas. The metadb command creates the file and updates it each time it is run. Similar information is entered in the /etc/system file.
Each metadevice state database replica has a unique entry in the /etc/lvm/mddb.cf file. Each entry contains the driver and minor unit numbers associated with the block physical device where a replica is stored. Each entry also
contains the block number of the master block, which contains a list of all other blocks in the replica.
Entries in the /etc/lvm/mddb.cf file are of the form: driver_name minor_t daddr_t checksum where driver_name and minor_t represent the device number
of the physical device storing this replica. daddr_t is the disk block address. checksum is used to make certain the entry has not been corrupted. A pound sign (#) introduces a comment.
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