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This test has been flapping because sometimes the record is not
vacuumed within the expected time period, perhaps even because the
check for the record can interfere with vacuuming. However, instead
of waiting for vacuuming the record can be cleared by doing a
recovery. This should be much more reliable.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14085
RN: Fix flapping CTDB tests
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Wed Aug 21 13:06:57 UTC 2019 on sn-devel-184
The following test sometimes fails:
==================================================
Running "cluster_mutex_test lock-unlock-lock-unlock ./tests/var/cluster_mutex.lockfile"
--------------------------------------------------
Output (Exit status: 134):
--------------------------------------------------
LOCK
UNLOCK
CONTENTION
NOLOCK
cluster_mutex_test: ../../tests/src/cluster_mutex_test.c:307: test_lock_unlock_lock_unlock: Assertion `dl2->mh != NULL' failed.
--------------------------------------------------
Required output (Exit status: 0):
--------------------------------------------------
LOCK
UNLOCK
LOCK
UNLOCK
FAILED
==========================================================================
TEST FAILED: tests/cunit/cluster_mutex_001.sh (status 1) (duration: 0s)
==========================================================================
This is due to a race in the test. For the first UNLOCK a signal is
sent to the cluster mutex handler but the test tries to retake the
lock before that process is scheduled and the signal is processed.
Therefore, the fcntl() lock is still held and contention is seen.
After unlocking, tests need to wait until the child has gone, so build
this into ctdb_kill(). This is one of the only places where the PID
is accessible.
Outside of testing, on a real system, nothing will never try
to (re)take the lock so quickly.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14085
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Check the record count more often, from multiple nodes. Add a case
with multiple records.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14085
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Use the VNN map from the node running node_has_status().
This means that
wait_until_node_has_status 1 notlmaster 10 0
will run "ctdb status" on node 0 and check (for up to 10 seconds) if
node 1 is in the VNN map.
If the LMASTER capability has been dropped on node 1 then the above
will wait for the VNN map to be updated on node 0. This will happen
as part of the recovery that is triggered by the change of LMASTER
capability. The next command will then only be able to attach to
$TESTDB after the recovery is complete thus guaranteeing a sane state
for the test to continue.
This stops simple/79_volatile_db_traverse.sh from going into recovery
during the traverse or at some other inconvenient time.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14085
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
All the other cases involve matching bits.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14085
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Re-indent and drop non-POSIX left-parenthesis from case labels.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14085
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Currently some of this is supported by a periodic check in the
recovery daemon's main_loop(), which notices the flag change, sets
recovery mode active and freezes databases. If STOP_NODE returns
immediately then the associated recovery can complete and the node can
be continued before databases are actually frozen.
Instead, immediately do all of the things that make a node inactive.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14087
RN: Stop "ctdb stop" from completing before freezing databases
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Tue Aug 20 08:32:27 UTC 2019 on sn-devel-184
There's no reason to avoid immediately setting recovery mode to active
and initiating freeze of databases.
This effectively reverts the following commits:
d8f3b490bbb4357a79d9
The latter is now implemented using a control, resulting in looser
coupling.
See also the following commit:
f8141e91a6
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14087
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This is a superset of ctdb_local_node_got_banned() so will replace
that function, and will also be used in the NODE_STOP control.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14087
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
To make it easy to pass the node data to the upcall, the private data
for ctdb_tcp_read_cb() needs to be changed from tnode to node.
RN: Avoid marking a node as connected before it can receive packets
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14084
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Fri Aug 16 22:50:35 UTC 2019 on sn-devel-184
Nodes are currently marked as up if the outgoing connection is
established. However, if the incoming connection is not yet
established then this node could send a request where the replying
node can not queue its reply. Wait until both directions are up
before marking a node as connected.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14084
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Since commit ddd97553f0
ctdb_queue_send() doesn't queue a packet if the connection isn't yet
established (i.e. when fd == -1). So, don't bother creating the
outbound queue during initialisation but create it when the connection
becomes writable.
Now the presence of the queue indicates that the outbound connection
is up.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14084
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This makes it easy to track both incoming and outgoing connectivity
states.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14084
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
in_fd is coming soon.
Fix coding style violations in the affected and adjacent lines.
Modernise some debug macros and make them more consistent (e.g. drop
logging of errno when strerror(errno) is already logged.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14084
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This is the core logic from ctdb_ip_to_pnn(), so re-implement that
that function using ctdb_ip_to_node().
Something similar (ctdb_ip_to_nodeid()) was recently removed in commit
010c1d77cd because it wasn't required.
Now there is a use case.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14084
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Compiling with -Wsign-compare complains:
1047 | && (call->call_id == CTDB_FETCH_WITH_HEADER_FUNC)) {
| ^~
struct ctdb_call is a protocol element, so we can't simply change it.
Found by csbuild.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Wed Aug 14 10:29:59 UTC 2019 on sn-devel-184
Compiling with -Wsign-compare complains:
ctdb/server/ctdb_call.c:831:12: warning: comparison of integer expressions of different signedness: ‘int’ and ‘uint32_t’ {aka ‘unsigned int’} [-Wsign-compare]
831 | if (count <= ctdb_db->statistics.hot_keys[0].count) {
| ^~
and
ctdb/server/ctdb_call.c:844:13: warning: comparison of integer expressions of different signedness: ‘int’ and ‘uint32_t’ {aka ‘unsigned int’} [-Wsign-compare]
844 | if (count <= ctdb_db->statistics.hot_keys[i].count) {
| ^~
Found by cs-build.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Compiling with -Wsign-compare complains:
ctdb/server/ctdb_daemon.c: scope_hint: In function ‘daemon_queue_send’
ctdb/server/ctdb_daemon.c:259:40: warning: comparison of integer expressions of different signedness: ‘int’ and ‘uint32_t’ {aka ‘unsigned int’} [-Wsign-compare]
...
The struct ctdb_queue member out_queue_length is actually uint32_t, so
just return that type.
Found by csbuild.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Should be used when public IP addresses are not assigned.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
If there is a failure it will always be the last test run. Don't
obscure this by following it with a summary.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
These files now pass, so we might as well keep them in good shape.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This can be used to find ctdb_run_tests and ctdb_local_daemons.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Given other improvements, this is now needlessly complex.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
SC2045 Iterating over ls output is fragile. Use globs.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
SC2034 summary appears unused. Verify use (or export if used externally)
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
SC2155 Declare and assign separately to avoid masking return values
The wscript changes require an identical change in local_daemons.sh.
While touching the lines in wscript, escape the backslashes to make
them literal backslashes.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
SC2164 Use 'cd ... || exit' or 'cd ... || return' in case cd fails
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
SC2086 Double quote to prevent globbing and word splitting
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Commit 90de5e0594 remove the processing
for this option but forgot to remove it from the getopts command.
Versions of ShellCheck >= 0.4.7 warn on this, so it is worth fixing.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14086
RN: Fix onnode test failure with ShellCheck >= 0.4.7
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
On older systems like SLES 11 without POSIX robust mutexes, but with glib robust
mutexes where all the functions are available but have a "_np" suffix,
compilation fails in:
ctdb/tests/src/test_mutex_raw.c.239.o: In function `worker':
/root/samba-4.10.6/bin/default/../../ctdb/tests/src/test_mutex_raw.c:129: undefined reference to `pthread_mutex_consistent'
ctdb/tests/src/test_mutex_raw.c.239.o: In function `main':
/root/samba-4.10.6/bin/default/../../ctdb/tests/src/test_mutex_raw.c:285: undefined reference to `pthread_mutex_consistent'
/root/samba-4.10.6/bin/default/../../ctdb/tests/src/test_mutex_raw.c:332: undefined reference to `pthread_mutexattr_setrobust'
/root/samba-4.10.6/bin/default/../../ctdb/tests/src/test_mutex_raw.c:363: undefined reference to `pthread_mutex_consistent'
collect2: ld returned 1 exit status
This could be fixed by using libreplace system/threads.h instead of pthreads.h
directly, but as there has been a desire to keep test_mutex_raw.c standalone and
compilable without other external depenencies then libc and libpthread, make the
tool developer build only. This should get the average user over the cliff.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14038
RN: Fix compiling ctdb on older systems lacking POSIX robust mutexes
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>
The "init" event is only run once so don't bother caching the
configured value of the recovery lock. Add some extra error checking.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Fri Jul 26 04:52:04 UTC 2019 on sn-devel-184
These tests currently do not do what is expected. They test the
default case.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
If the lock file is inaccessible or the inode number changes then the
lock is lost, so exit. This allows the recovery daemon to trigger an
election. The ensuing recovery will re-take the lock.
By default the lock file is checked every 60 seconds. A lot can
happen in 60 seconds but being more aggressive and accessing the lock
too often could result in a performance issue for the cluster
filesystem.
An new optional 2nd argument is added, which is the lock file re-check
time in seconds.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This will allow more conditions to be waited on via additional
sub-requests. At the moment this just completes when the parent wait
completes.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Put the checking for the process being immediately re-parented into
the computation too. This will be very rare and doing it
consistently makes testing saner.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
There is no need to wait until the parent kills the helper. The
parent will get the initial response, indicating contention or
similar, and will then get a separate event indicating that the pipe
is gone.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This makes the code more explicit and makes testing easier due to less
dependencies.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
clang warns:
ctdb/server/ctdb_mutex_fcntl_helper.c:61:3: warning: Value stored to 'fd' is never read
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
One of these had a missing space, so this implicitly fixes it. It
also drops the need to unnecessarily include common.h, which comes
with some dependency baggage.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Only do this if the recovery lock is unset. Log every minute for the
first 10 minutes, then every 10 minutes, then every hour.
This is useful for determining whether a split brain occurred. It is
particularly useful if logging failed or was throttled at startup, so
there is no evidence of the split brain when it began.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
In tini, allow_empty_value=false causes the parser to ignore the lines
without '=' sign, but lines with nothing after '=' sign are allowed and
cause empty string ("") to be passed as a value.
This is counter-intuitive, so conf requires special handling for empty
values (which are treated as invalid).
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Regression introduced by commit
2558f96da1. count should be signed
because list_of_connected_nodes() returns -1 on failure. Variable i
is used in both signed and unsigned contexts, so add new signed
variable j for use in signed context.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14017
CTDB should start as a disabled unit (systemd) in most of the
distributions and, when trying to enable it for the first time, user
should get an unconfigured, or similar, error.
Depending on /etc/ctdb/nodes file will give a clear direction to final
user on what is needed in order to get cluster up and running. It should
work like previous ENABLED=NO variables in SySV like initialization
scripts.
Signed-off-by: Rafael David Tinoco <rafaeldtinoco@ubuntu.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This makes it consistent with print-socket.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Fri Jul 5 06:19:11 UTC 2019 on sn-devel-184
csbuild doesn't like the hack where variable buf is initialised to
itself to avoid an unused variable warning. buf is unused so remove
it instead.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This can never be NULL. It could probably be NULL in the past when
"all database" locks existed.
There are paths where is is checked for NULL and then later
dereferenced, causing static analysers to produce spurious warnings.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This avoids static analysers continuing analysis after calls to these
functions and producing incorrect warnings.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Otherwise ret == 0 is returned from successful call to
ctdb_int32_pull().
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
According to the documentation, sendto() should either send the packet
as given or return with an error. However, given that it can return
the number of bytes sent, treat the theoretical error of a short
packet send separately, since errno would not be set in this case.
Similarly, treat a short packet recv() separately from an error where
errno is set.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This avoids an unnecessary signed/unsigned comparison issue.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
clang reports:
ctdb/protocol/protocol_types.c:5191:3: warning: Value stored to 'ret' is never read
Found by csbuild.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Indexing by PNN is wrong.
This also removes a signed/unsigned comparison because the PNN is not
compared to -1 anymore.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Node ID is a poorly defined concept, indicating the slot in the node
map where the IP address was found. This signed value also ends up
compared to num_nodes, which is unsigned, producing unwanted warnings.
Just return the PNN because this what both callers really want.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Static analysis finds that earlier in the call path, ctdb_string_len()
checks for NULL, so complains that a NULL value can be passed to
strlen() here. Avoid this by adding an assert().
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The dummy reader should never be called, so contains an assert on the
buffer length that should always trigger. Just abort() instead.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
These are all cases comparing a number of bytes written (int or
ssize_t) with a size_t, so casting to size_t is appropriate.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Change declarations of variable and parameters, usually loop variables
and limits, from int to unsigned int, size_t or uint32_t.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This improves readability. Also, the asserts involving this
expression get more complicated in the next commit, so this will keep
those asserts within a single line.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
... and does not just contain whitespace.
Otherwise NULL can be passed as the first argument to execv().
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Instead of taking exclude_pnn as a parameter, calculate it from an
include_self_parameter, which is passed through from the 2 calling
functions.
While doing this, fix a signed/unsigned comparison issue by declaring
the new exclude_pnn local variable as an unsigned type.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The next commit will change the type of this function, which is only
used in this file. So, make it static to isolate the change.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
