lvcreate/lvconvert: optionally reenable mirrored mirror log for testing purposes only
This is a followup patch to commit
edb72cb70cb8abd0acb92f07937715be2816d04a
to support related lvm2 test suite tests.
A 'global/support_mirrored_mirror_log' bool configuration variable gets
introduced allowing the creation of, or conversion to mirrored 'mirror'
logs if set. The capability to create these in turn allows the rest of
the tests to perform activation of such existing LVs and their conversions
to disk/core 'mirror' logs.
Display a disclaimer warning if enabled that this is not for regular use.
Add definition of the enabled config option to respective test scripts.
Related: rhbz1643562
git://sourceware.org / lvm2.git / commit