Add network locks to Haskell
Ganeti also has a lock level for networks, however this level was forgottenwhen the Ganeti lock hierarchy was implemented in Haskell.
Signed-off-by: Klaus Aehlig <aehlig@google.com>Reviewed-by: Petr Pudlak <pudlak@google.com>
Fix allocation order of locks
The correct allocation order for node-related Ganeti locks isallocation, group, the node itself, resources.
Allow transitions from sets to elements
Owning a set-lock has the same effect as owning each member. So askingfor a member while already holding the set lock in the same mode (sharedor exclusive) is, effectively, no asking for new locks. Therefore, do not...
Fix typo
Add a function to determine the lock owners
To allow for clean up, add a function that provides the listof all the owners holding at least one lock.
Provide an asynchronous task for writing lock status
It will be used to persist the state of the lock allocation ondisk, allowing locks to survive reboots of WConfD.
Add Ganeti Lock Hierarchy
Make Ganeti.Locking.Locks.GanetiLocks present the full Ganetilock hierarchy. This is in accordance with the current Pythonimplementation.
Signed-off-by: Klaus Aehlig <aehlig@google.com>Reviewed-by: Petr Pudlak <pudlak@google.com>...
Serialize locks as JSON strings
...as the current Python implementation does as well.
Locks are owned by job id file path pairs
...according to our updated design.
Add a function to load lock allocation from disk
Lock allocation are stored on disk as their JSON representation.
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