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Replace usage of dm_hash with radix_tree to quickly find LV name
with a vg and also index PV names with set of available PVs.
This PV index is only needed during the import, but instead
of passing 'radix_tree *' everywhere, just keep this within
a VG struct as well and once the parsing is finished, release
this PV index radix_tree.
This also makes it easier to replace this structure
in the future if needed.
lv_set_name now uses radix_tree remove+insert to keep lv_names
tree in-sync and usable for find_lv queries.
functionality. A number of bugs (copied and pasted all over the code) should
disappear:
- most string lookup based on dm_config_find_node would segfault when
encountering a non-zero integer (the intention there was to print an
error message instead)
- check for required sections in metadata would have been satisfied by
values as well (i.e. not sections)
- encountering a section in place of expected flag value would have
segfaulted (due to assumed but unchecked cn->v != NULL)
leaving behind the LVM-specific parts of the code (convenience wrappers that
handle `struct device` and `struct cmd_context`, basically). A number of
functions have been renamed (in addition to getting a dm_ prefix) -- namely,
all of the config interface now has a dm_config_ prefix.
At this point they probably do not matter but going forward they
may - depends on future patches for replicator, etc. I think
these probably got missed because they were 'flags' so I changed
the name to 'status' to be consistent. So the on-disk
things 'flags' and the in structure 'status' (bits).
NOTE: WHATS_NEW already has entry for this in current release.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Acked-by: Mike Snitzer <snitzer@redhat.com>
