Description of problem:
Anaconda should use liblvm and libcryptsetup to determine the data area start location for any volumes it will create.
liblvm must provide access to what a particular PV's pe_start will be (bug 623808).
libcryptsetup must provide access to what a particular LUKS device's 'Payload offset' will be.
improving anaconda in this manner will enable more comprehensive "I/O topology awareness" at install time.
Do you have a pointer to documentation for using those libraries?
anaconda changes are blocked by upstream acceptance of the as-yet-to-be-completed work described in bug #623808. Once those are done, we can work on changing anaconda.
Since bug #623808 is currently in ON_QA for 6.2 and the devel freeze is 4 business days away, I'm moving this bug to 6.3.
Anaconda is a python application. Until/unless liblvm provides python bindings this is a non-starter.
Based on comment #7 and where things stand right now with liblvm, I really don't see this happening in the 6.3 timeframe. Rather than carry this forward forever, I'm going to set devel_ack-.
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Fair enough... but be aware that dropping this may lead to misaligned root volumes in the future.
liblvm and libcryptsetup were thought to be a means to an end for fixing the general issue of making anaconda "I/O topology aware". That they have been deemed inadequate doesn't change the fact that anaconda is lacking said awareness.