Kevin Benton 8404b8d6b8 Verify ML2 type driver exists before calling del ...

Verifies that an ML2 type driver exists for a given
segment type before attempting to call the release_segment
method on it. Logs an error if a type driver is not
found.

This covers the case where a segment is created with
a given type and then ML2 is reconfigured without
support for that type.

DocImpact
The ML2 documentation should be updated with a warning
that disabling a network type driver and re-enabling
it later may lead to possible DB inconsistencies.

Closes-Bug: #1292102
Change-Id: I65a35abf3ed57347bb6e8fee228f8c0697217c00

2014-04-13 09:21:28 +00:00

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