Vivek Goyal 4071b33d53 devmapper: Move pool id query and migration of old data in separate function
Right now initMetaData() first queries the pool for current transaciton Id
and then it migrates the old metafile.

Move pool transaction Id query and file migration in separate functions
for better code reuse and organization.

Given we have removed device transaction Id dependency from saveMetaData(),
we don't have to query pool transaction Id before migrating files.
 
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Upstream-commit: 824a87f7efb94e4f307d920c3c3689156d6e633f
Component: engine
2014-12-03 13:06:43 -05:00
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