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fix the logic in ctdb_connected to print CONNECTED if the node is
connected and UNAVAILABLE when the node is dead instead of the opposite
(This used to be ctdb commit 0f431d2f3e0bd94d10fe77e56cf0ed6c48402400)
- make ctdb capable of alternative connection (like ib) again, solved the fork problem
- do_debug memory overwrite bugfix (occured using ibwrapper_test with wrong address given)
(This used to be ctdb commit da0b84cda26d544f63841dfd770ed7ebad401944)
version. The client version is different enough that this is
worthwhile
- enable local shortcut for client version of ctdb_call
- add idr_find_type(), with better error reporting in case of type
mismatch
(This used to be ctdb commit 2388094c5f7b6ce003e86b05620c06217d63b49c)
this function can be used in test applications to perform an orderly shutdown of the ctdb cluster once the test has completed.
the ctdb nodes will remain operational until all of them have received a shutdown from their client(s) after which the ctdb daemons will all terminate.
this eliminates the need to using sleep() in some of the test applications
(This used to be ctdb commit f35db69dc190b11659aad85495bb66308fdb5599)
- fixed memory leaks in the 3 packet receive routines. The problem was
that the ctdb_call logic would occasionally complete and free a
incoming packet, which would then be freed again in the packet
receive routine. The solution is to make the packet a child of a
temporary context in the receive routine then free that temporary
context. That allows other routines to keep or free the packet if
they want to, while allowing us to safely free it (via a free of the
temporary context) in the receive function
(This used to be ctdb commit 304aaaa7235febbe97ff9ecb43875b7265ac48cd)
fetch, to avoid the daemon re-reading it
- suffix the database name with the node name so that testing on
loopback doesn't result in a name collision in the database open
(This used to be ctdb commit ad30a4db75450643ff146c40faa306a021de3dd2)
code. It may be added back later once everything is working nicely,
or simulated using a in-process pipe instead of a unix domain socket
- rewrote the ctdb_fetch_lock() code to follow the new design
(This used to be ctdb commit 5024dd1f305fe1ecc262db2240c56f773b4f28f0)
change ctdb_client_fetch_lock to return a status code instead of a record handle and make it unconditionally fill in data.
change ctdb_client_store_unlock to take ctdb_db and key as arguments instead of a record handle
update the ctdb_fetch.c test to use the clientside helpers for fetching and storing data
(This used to be ctdb commit 22d5d40375e0135916c97945646f94119612615d)
The problem we have is this:
- we want the client smbd processes to be able to 'shortcut' access
to the ltdb, by directly accessing the ltdb, and if the header of
the record shows we are the dmaster then process immediately, with
no overhead of talking across the unix domain socket
- a client doing a shortcut will use tdb_chainlock() to lock the
record while processing
- we want the main ctdb daemon to be able to set locks on the
record, and when those locks collide with a 'shortcut' fcntl lock,
we want the ctdb daemon to keep processing other operations
- we don't want to have to send a message from a smbd client to the
ctdbd each time it releases a lock
The solution is shown in this example. Note that the expensive fork()
and blocking lock is only paid in case of contention, so in the median
case I think this is zero cost.
(This used to be ctdb commit a3248c3e2b740cd2403acffd3c1f6a33dca0ea03)
they both successfully fetch and lock the same record at this stage but when the actual locking works properly the second child will block.
this test allows us to verify the blocking once we have implemented it
(This used to be ctdb commit b1c0baa03a669757aaacb6e1a2794224f5ba2cd7)
there is still a bug in the ctdb code in that the children no longer receive messages from the parent for unknown reasons
(This used to be ctdb commit 468f68e4607900c5c38aea428a48dd6ea1647411)
this makes it possible to do fetch_lock and store_unlock across a domain socket to read/write data.
note that the actual locking is NOT implemented yet
(This used to be ctdb commit c7a397c56caf71283c081e5b97620085ed5108c6)
for now:
fetch a record
store a known entry for this record
fetch the record again (and later verify we got the same record)
store it back again
this will not work right now since we dont yet store the record inside the daemon
(This used to be ctdb commit f502094499a3c25ab58aa3d192588b5e6dd2b8e4)
note that the store_unlock does not actually do anything yet apart from passing the pdu from client to daemon and daemon responds.
next is to make sure the daemon actually stores the data in a database
(This used to be ctdb commit 167d6993e78f6a1d0f6607ef66925a14993ae6a1)
no locking is yet done and the store_unlock call is still missing
the ./tests/fetch.sh --daemon test fails with parent process dying which needs to be investigated.
(This used to be ctdb commit 7d7141c968950a8856f1be79871932b688bfb07f)
