(based upon Debian bugzilla suggestion)
.br
- recent entries from /var/log/messages (containing system messages)
.br
-- complete lvm configuration and cache
+- complete lvm configuration and cache (content of /etc/lvm)
.br
- list of device nodes present under /dev
.br
+- list of files present /sys/block
+.br
+- list of files present /sys/devices/virtual/block
+.br
- if enabled with -m, metadata dump will be also included
.br
- if enabled with -a, debug output of vgscan, pvscan and list of all available volume groups, physical volumes and logical volumes will be included