Minor Number Encoding

Minor Number Encoding:

lvmtab, lvmtab_p LVM has a well known configuration file /etc/lvmtab. With the introduction of Version 2.x volume groups, LVM uses a new configuration file, /etc/lvmtab_p. The differences between the two versions are as follows:

 /etc/lvmtab is a private binary file. It contains information only related to Version 1.0 volume groups. It is compatible with all supported HP-UX releases.

 /etc/lvmtab_p is a new private binary file. It contains information only related to Version 2.x volume groups. It has a different internal structure from lvmtab and contains additional information.

For example:

# strings /etc/lvmtab_p /dev/vgtestl A0000000000000004Sun Mar 16 03:02:19 2007241fa9de-dba3-11da-9cd2efa80dc3e /dev/disk/disk /dev/disk/disk /dev/disk/disk /dev/disk/disk /dev/disk/disk /dev/disk/disk /dev/disk/disk For more details see the following white papers available from the docs.hp.com website:

 HP-UX Logical Volume Manager and MirrorDisk/UX Release Notes  HP-UX 11i v3 March 2008 (B.11.31)  HP-UX LVM Supported Limits  LVM Version 2.0 Volume Groups in HP-UX 11i v Appendix D: Procedures This section contains details on some of the procedures described in earlier sections of this document.