todo: More suggestions for virt-sysprep (thanks Kazuo Moriwaka).

TODO

@@ -397,6 +397,25 @@ virt-sysprep ideas
  - remove or modify UUIDs in /etc/fstab (eg. on Ubuntu)
    (thanks Joshua Daniel Franklin)
 
+Kazuo Moriwaka adds:
+
+ - /etc/machine-id (created by systemd)
+ - "yum clean all" (or the equivalent) to remove yum caches
+ - lvm PV and VG have its UUID.  'pvchange -u' and 'vgchange -u' generate
+   new UUID (causes trouble with clustered LVM).
+ - ABRT have crash report and core dumps under /var/spool/abrt. This can
+   be deleted.
+ - swap devices (both of block device and file) should be wiped. This may  
+   good for security purpose, and size.  I found virt-sparsify can clear
+   swap partition.
+ - --script is nice.  Defining default sysprep script directory
+   like /usr/lib/guestfs/sysprep-scripts.d/ may be useful to integrate
+   other package maintainer(or ISV)'s effort.
+ - To achieve better (or crazy) coverage, a simple examination will be
+   help:
+     Install the same kickstart into VM twice, and diff the trees.
+     Many autogenerated IDs and configs can be found :)
+
 As well as 'virt-sysprep' there is a case for a 'virt-customize' tool
 which can customize templated guests.  This would be useful within
 companies/organizations that want to offer multiple guests, but all