lvmdump - create lvm2 information dumps for diagnostic purposes
lvmdump [options] [-d directory]
lvmdump is a tool to dump various information concerning LVM2. By
  default, it creates a tarball suitable for submission along with a problem
  report.
The content of the tarball is as follows:
  
  - dmsetup info
  
  - table of currently running processes
  
  - recent entries from /var/log/messages (containing system messages)
  
  - complete lvm configuration and cache
  
  - list of device nodes present under /dev
  
  - if enabled with -m, metadata dump will be also included
  
  - if enabled with -a, debug output of vgscan, pvscan and list of all available
    volume groups, physical volumes and logical volumes will be included
  
  - if enabled with -c, cluster status info
  - -h — print help message
- -a — advanced collection
- WARNING: if lvm is already hung, then this script may hang as well
      if -a is used
- -m — gather LVM metadata from the PVs
- This option generates a 1:1 dump of the metadata area from all PVs visible
      to the system, which can cause the dump to increase in size considerably.
      However, the metadata dump may represent a valuable diagnostic
    resource.
- -d directory — dump into a directory instead of tarball
- By default, lvmdump will produce a single compressed tarball containing
      all the information. Using this option, it can be instructed to only
      produce the raw dump tree, rooted in directory.
- -c — if clvmd is running, gather cluster data as well
  - LVM_BINARY
- The LVM2 binary to use. Defaults to "lvm". Sometimes you might
      need to set this to "/sbin/lvm.static", for example.
- DMSETUP_BINARY
- The dmsetup binary to use. Defaults to "dmsetup".