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Operating Systems
Linux
Red Hat
add lvm space from a regular partition
Post 302363173 by itik on Monday 19th of October 2009 03:42:03 PM
10-19-2009
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LEARN ABOUT SUNOS
mddb.cf
mddb.cf(4) 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) command is invoked. You should never directly edit this file. The file /etc/lvm/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 /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 num- bers 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. 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
/etc/lvm/mddb.cf /kernel/drv/md.conf SEE ALSO
mdmonitord(1M), metaclear(1M), metadb(1M), metadetach(1M), metahs(1M), metainit(1M), metaoffline(1M), metaonline(1M), metaparam(1M), metarecover(1M), metarename(1M), metareplace(1M), metaroot(1M), metassist(1M), metaset(1M), metastat(1M), metasync(1M), metattach(1M), md.cf(4), md.tab(4), attributes(5), md(7D) Solaris Volume Manager Administration Guide SunOS 5.10 8 Aug 2003 mddb.cf(4)