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File Formats                                           mddb.cf(4)



NAME
     mddb.cf - metadevice state database replica locations

SYNOPSIS
     /etc/lvm/mddb.cf

DESCRIPTION
     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/lvm/mddb.cf is used by the  metainit(1M)  com-
     mand 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
     /kernel/drv/md.conf 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 cor-
     rupted. A pound sign (#) introduces a comment.

EXAMPLES
     Example 1: Sample File

     The following example shows a mddb.cf file.

     #metadevice database location file do not hand edit
     #driver minor_t daddr_t device id       checksum
     sd      152     16      id1,sd@SSEAGATE_JDD288110MC9LH/a        -2613

     In the example above, the value for daddr_t  indicates  that
     the  offset  from  the start of a given partition is 16 disk
     blocks from the start of that partition.

FILES
        o  /etc/lvm/mddb.cf

        o  /kernel/drv/md.conf

SEE ALSO
     metaclear(1M),   metadb(1M),   metadetach(1M),   metahs(1M),
     metainit(1M),        metaoffline(1M),        metaonline(1M),



SunOS 5.9            Last change: 4 Sep 2002                    1






File Formats                                           mddb.cf(4)



     metaparam(1M), metareplace(1M), metaroot(1M),  metastat(1M),
     metasync(1M), metattach(1M), md.tab(4)

     Solaris Volume Manager Administration Guide



















































SunOS 5.9            Last change: 4 Sep 2002                    2