On-disk and LVM internal metadata representation

Hi,

Whats the difference between on-disk metadata and LVM internal representation? How does LVM map between these two representations?

Thanks in advance.

Nallammai.S

It is different for LVM1 vs LVM2.

LVM2
- text-based on-disk metadata
- format-specific code in lib/format_text

LVM1
- binary on-disk metadata
- format-specific code in lib/format1

If you read the import*.[ch] and export*.[ch] files in the format specific directories you will get an understanding of the mapping. I also found following the label_read() function to be helpful.