HP-UX HB v13.00 Ch-13 - LVM

HP-UX Handbook – Rev 13.00 Page 8 (of 110)
Chapter 13 LVM
October 29, 2013
 Information about PVs in root VG
 Information about Boot/Swap/Root LVs (major/minor numbers, etc.)
3. The VGRA is identical for any PV of the VG. It contains:
 The VGDA describing the VG, with e.g.:
o VG-ID, configured max_lv, max_pv, max_pe.
o per LV information: LV flags, size, schedule strategy, number of
mirrors, stripes, stripe size, etc.
o per PV information: PV-ID, PV size, PV flags, Extent mapping, etc.
 The VGSA containing information about missing PVs and stale extents.
 The MCRs for Mirror Write Cache handling.
LIF Header and LIF Volume
LIF stands for Logical Interchange Format. The LIF header resides in the first 8 KB of
any LVM boot disk. It contains the directory to the LIF volume that begins after the
BDRA. It can be displayed using lifls(1M):
# lifls -l /dev/rdsk/c1t6d0
volume ISL10 data size 7984 directory size 8
filename type start size implement created
============================================================
ISL -12800 584 306 0 00/11/08 20:49:59
AUTO -12289 896 1 0 00/11/08 20:49:59
HPUX -12928 904 848 0 00/11/08 20:50:00
PAD -12290 1752 1580 0 00/11/08 20:50:00
LABEL BIN 3336 8 0 99/10/08 02:48:02
The LIF volume contains files necessary to boot: ISL, HPUX, LABEL and AUTO (for
automatically boot). Look at the Boot Chapter in order to get a detailed explanation of
each LIF file.
PV-ID and VG-ID
Any PV has a unique 8 byte long identifier - the PV-ID. The VG-ID is a unique identifier
for the VG that this PV belongs to. It is also 8 byte long. Their values are stored in the
PVRA.
The utility lvmmeta displays the complete LVM header: