LVM Version 2.0 Volume Groups in HP-UX 11i v3 (September 2008)

1.0 Minor Number Encodin
g
:
Logical volume number
01 (mana
g
ed b
y
LVM)
Volume group
number 18
(p
icked b
y
customer
)
2.x Minor Number Encodin
g
:
Logical volume
number (managed
by LVM)
Volume group number 20
(picked by customer or LVM)
Reserved
Bits 11 & 23 Reserved. If non
zero then no assumptions can
be made about logical volume
or volume group number
brw-r----- 1 root sys 128 0x014000 Jun 23 2006 lvol1
brw-r----- 1 root sys 64 0x120001 Jun 23 2006 lvol1
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 is a private binary file. It contains information related to 1.0 volume groups only. It is
compatible with all supported HP-UX releases.
• /etc/lvmtab_p is a new private binary file. It contains information related to 2.x volume groups only. It
has a different internal structure from lvmtab and contains additional information.
Example
# strings /etc/lvmtab_p
/dev/vgtestl2
A0000000000000004Sun Mar 16 03:02:19 2007241fa9de-dba3-11da-9cd2-23efa80dc3e7
/dev/disk/disk79
/dev/disk/disk80
/dev/disk/disk81
/dev/disk/disk82
/dev/disk/disk83
/dev/disk/disk84
/dev/disk/disk85
New Command (lvmadm)
lvmadm (1M)
11