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root / src / Ganeti / WConfd @ f3010b75

Name Size
ConfigState.hs 1.2 kB
ConfigWriter.hs 3.8 kB
Core.hs 3.5 kB
DeathDetection.hs 3 kB
Language.hs 2.4 kB
Monad.hs 6.7 kB
Server.hs 3.4 kB

Latest revisions

# Date Author Comment
f3010b75 03/07/2014 10:57 am Klaus Aehlig

Also clean up stale livelock files

Upon detection of a stale livelock, make WConfD also
try to clean it up. We can safely ignore any failures,
as the Ganeti resources are already freed, and the worst
thing that can happen is an empty file left over in the...
db0d2ee9 03/06/2014 05:35 pm Klaus Aehlig

In WConfD run a cleanup task

Add the cleanup task for locks of died owners to WConfD,
as a separate thread.

Signed-off-by: Klaus Aehlig <>
Reviewed-by: Petr Pudlak <>
b57c50de 03/06/2014 05:35 pm Klaus Aehlig

Provide a periodic lock cleanup task

Provide a task that periodically checks for all locks
owners whether they are still alive. If not, it cleans
up their locks.

Signed-off-by: Klaus Aehlig <>
Reviewed-by: Petr Pudlak <>
bacb44fe 03/06/2014 05:35 pm Klaus Aehlig

Add a function to detect death of a job

With jobs running in processes different from the lock management soon,
we need to detect if a job holding locks dies, in order to release the
resources.

Signed-off-by: Klaus Aehlig <>
Reviewed-by: Petr Pudlak <>
1d4febbd 03/04/2014 05:03 pm Klaus Aehlig

Write lock state to disk after updates

Make use of asynchronous worker to save to log status after every
update. The answer to the query is only returned, once the state
is saved on disk. Note that replication of the lock status is not
necessary, as all jobs will be gone if the master node goes away....
5d7ac40f 03/03/2014 06:05 pm Klaus Aehlig

Export opportunistic lock union through WConfd

Make WConfD provide a function to opportunistically allocate
locks.

Signed-off-by: Klaus Aehlig <>
Reviewed-by: Petr Pudlak <>
66927d09 03/03/2014 06:05 pm Klaus Aehlig

Export lock intersection through WConfD

Export the functionality to restrict the owned locks to a given set.

Signed-off-by: Klaus Aehlig <>
Reviewed-by: Petr Pudlak <>
b4d1b49f 03/03/2014 06:05 pm Klaus Aehlig

Export freeLocks through WConfD

Export the functionality to free all locks of a given
owner.

Signed-off-by: Klaus Aehlig <>
Reviewed-by: Petr Pudlak <>
032befbd 03/03/2014 06:05 pm Klaus Aehlig

Add lock modification without result to WConfdMonad

Enrich the structure of WConfdMonad by a convenience
wrapper around modifyLockAllocation for the case that
the modification always succeeds and does not produce
any result.

Signed-off-by: Klaus Aehlig <>...
f919184d 03/03/2014 06:05 pm Klaus Aehlig

Export updateLocks through WConfD

Export the functionality to update the locks of a given
owner through WConfD.

Signed-off-by: Klaus Aehlig <>
Reviewed-by: Petr Pudlak <>

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