Information about all the LVs and PVs within a VG. The first 64K of a PV is reserved for this area – defined in <sys/bootrecord.h>.

The VGDA consists of

• BOOTRECORD: – first 512 bytes. Allows the Read Only System (ROS) to boot system
• BAD BLK DIRECTORY – found in <sys/bddir.h>
• LVM RECORD – found in <lvmrec.h>

Ref:

http://www.datadisk.co.uk/html_docs/hp/aix_lvm.htm

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