IF YOU WOULD LIKE TO GET AN ACCOUNT, please write an
email to Administrator. User accounts are meant only to access repo
and report issues and/or generate pull requests.
This is a purpose-specific Git hosting for
BaseALT
projects. Thank you for your understanding!
Только зарегистрированные пользователи имеют доступ к сервису!
Для получения аккаунта, обратитесь к администратору.
it receives from remote nodes with its own generation number.
if the generation id do not match the daemon will just discard the
packet completely.
this will require that clients such as samba3 will have to be aware that
calls it sends to remote nodes may get lost and will have to resend the
requests after a timeout.
during cluster recovery/reconfiguration the generation nnumbers will be
changing and this can be used to prevent nodes that are still in the
"old" instance from talking to nodes that belong to the new generation
instance
(This used to be ctdb commit 4c197f1cbfdd5f65af9c059aae2b4508ebd0cd34)
the cluster is currently in.
remove all instances where the clients try to fill in the generation
field of the header
(This used to be ctdb commit fd75463f69f9f9100b2fe4cb710201a8262cdcec)
this will allow a node to verify that a received pdu is sent from a node
in the same generation instance of a cluster.
(This used to be ctdb commit e32d3ca9a622237c4e2622de98825c0962760d48)
broadcasted to all daemons in the cluster
change the message dispatch routine for sending messages so that it
allows several clients to use the same srvid
messages are then passed on to all clients that have that srvid
(This used to be ctdb commit 05d7ebb3556785f0f17a87d808f31ffe8dac288a)
update ctdb_lmaster() return the lmaster based on this tables contents
initialize the vnn table based on number of nodes for now.
later when recovery is implemented the recovery process will populate
this mapping table.
(This used to be ctdb commit 71e440f6c26ea074f9887237c962101c8cef8c80)
store the idr as the high 16 bits and use a rotating counter for the low
16 bits.
(This used to be ctdb commit 7c763b7b5e6ca54a6df4586893ddaf1b508b4c22)
lmaster instead of what the nodes think is the dmaster (which might be
stale) improve performance.
(This used to be ctdb commit f535f79e6a2a6c6d07141b96e0b957fa93c684f4)
dmaster request stage, and instead directly send a dmaster
reply. This avoids a race condition where a new call comes in for
the same record while processing the dmaster request
- don't keep any redirect records during a ctdb call. This prevents a
memory leak in case of a redirect storm
(This used to be ctdb commit 59889ca0fd606c7d2156839383a09dfc5a2e4853)
- 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)
processed immediately, but the input routines indirectly assumed
they were being called as a new event (for example, a calling
routine might queue the packet, then afterwards modify the ltdb
record). The solution was to make self packets queue via a zero
timeout.
- fixed unlinking of the socket in a exit in the lockwait code. Needed
an _exit instead of exit so atexit() doesn't trigger
- print latency of lockwait delays
(This used to be ctdb commit 1b0684b4f6a976f4c5fe54394ac54d121810b298)
ctdb_ltdb_lock_requeue() and a small wrapper
- use ctdb_ltdb_lock_requeue() to fix a possible hang in
ctdb_reply_dmaster(), where the ctdb_ltdb_store() could hang waiting
for a client. We now requeue the reply_dmaster packet until we have
the lock
(This used to be ctdb commit 97cd7aa09ce3abbb5e3e965c5c81668e0c0133a5)
CTDB_FLAG_TORTURE, which forces some race conditions to be much more
likely. For example a 20% chance of not getting the lock on the
first try in the daemon
- abstraced the ctdb_ltdb_lock_fetch_requeue() code to allow it to
work with both inter-node packets and client->daemon packets
- fixed a bug left over in ctdb_call from when the client updated the
header on a call reply
- removed CTDB_FLAG_CONNECT_WAIT flag (not needed any more)
(This used to be ctdb commit 7559dcd184666c3853127e3c8f5baef4fea327c4)
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)
us to put memory directly in the right context, avoiding quite a few
talloc_steal calls, and simplifying the code
- make the fetch lock code in the daemon fully async
(This used to be ctdb commit d98b4b4fcadad614861c0d44a3854d97b01d0f74)
a client held the chainlock, and the daemon received a dmaster reply
at the same time. The daemon would not be able to process the dmaster
reply, due to the lock, but the fetch lock cannot make progres until
the dmaster reply is processed.
The solution is to not hold the lock in the client while talking to
the daemon. The client has to retry the lock after the record has
migrated. This means that forward progress is not guaranteed. We'll
have to see if that matters in practice.
(This used to be ctdb commit 737e5a1253cb048222c595a474aff71c99fc554f)
It ensures that when the client context goes away (such as when the client exits)
that any timed events and partially completed requests from that client also go away
(This used to be ctdb commit 45a45a0a44d4da9b45719aac72b0ae4bd4c74462)
occasionally leads to problems if an immediate send on the socket
causes a context switch and the client exiting before the daemon. We
now exit the client when the daemon goes away.
(This used to be ctdb commit b7bed0088e700f25105ceea63640b38804f51e4d)
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)
this will be the core of the non-blocking lock idea for ctdb, it will be used
in place of ctdb_ltdb_fetch(), but will also get a lock. It re-starts a request
if it needs to block
(This used to be ctdb commit afa479026cf6293e6a878c8a329cdac035284672)
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)
- when we do a store_unlock the lock record becomes unlocked, so we
must destroy it (or we leak memory)
(This used to be ctdb commit d85955640e670dd580073da96b25fb8a10c08d18)
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)
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)
we cant peek in state->c since this is uninitialized
and even if it were not it would be wrong
create a new structure to pass BOTH client and also the reqid to respond back to
the client with
(This used to be ctdb commit e1a0da3dfbb4a927e8d98723b5e51a201c2a3428)
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)
read returns 0 bytes this means the client has exited. Close the connection
then.
(This used to be ctdb commit bd10f4e62146493848258df8a3dc3b9222337a12)
- split client specific routines out of ctdb_daemon.c
- use ctdb_queue code in message send from client to daemon
- use clearer names in client/daemon functions
- use talloc autofree context to avoid global for unlink of socket on
exit
- start on API change for message handler, to allow ctdb messaging to
handle daemon mode with multiple clients
(This used to be ctdb commit 53555db45f3583ae4a32cc3aa9e07fb8ef2a77e3)
we can no longer use this function from the application if we are in daemon mode.
add a horrible "sleep()" to ctdb_test.c to prevent the daemon from dissapearing (parent process died) when the application exits which may happen before the other nodes in the test have finished talking to our daemon
(This used to be ctdb commit 74d35dafe06d71e755f3a58cc58d4b9b56fc821b)
send the correct structure back to a client
assorted other cleanups
(tests/test1.sh now works in daemon mode)
(This used to be ctdb commit f4593754cab750dfdb9384884502e2e1b8fde1f0)
TODO: bugfix (not yet complete, something happens differently than expected
at tcpip when connection is refused in the beginning)
(This used to be ctdb commit 330d76fb91f717d4fb8d1be29c11ddf8c25a4f1c)
