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Since configure.h is a generated header and it's missing traditional
ifdefs preambule - it can be included & parsed multiple times.
Normally compiler is fine when defines have same value and there is
no warning - yet we don't need to parse this several times
and by adding -include directive we can ensure every file
in the package is rightly compile with configure.h as the
first header file.
Ensure configure.h is always 1st. included header.
Maybe we could eventually introduce gcc -include option, but for now
this better uses dependency tracking.
Also move _REENTRANT and _GNU_SOURCE into configure.h so it
doesn't need to be present in various source files.
This ensures consistent compilation of headers like stdio.h since
it may produce different declaration.
Add more time for tests, since debug kernels are getting slower...
and we add more and more tests.
However many test should be shortened to avoid testing disk-perfomance
and focus on lvm functionality...
(Often we should probably test with inactive volumes when we check
metadata operation of lvm2)
We may need to support option for 'DEEP' longer testing.
Also something like LVM_TEST_TIMEOUT_FACTOR might be useful
though it would be much better if test suite could approximete
from system perfomance test lenght...
It's not so easy to recongnize unusable /dev/kmsg
Reorder the code in a way if the first regular read of /dev/kmsg
fail, fallback to klogctl interface.
Call drain_dmesg also for the case there is no user log output.
Add a bit more complexity here - Switch to use /dev/kmsg
which has been introduced in 3.5 kernels and could run without
lossing lines from /proc/kmsg.
On older systems user may set env var LVM_TEST_CAN_CLOBBER_DMESG=1
to get kernel messages via klogctl() call (which deletes dmesg buffer)
otherwise no logging of kernel messages is provided.
Since there could be multiple readers of kmsg (test & journald) it needs
to be fast, to capture things like sysrq trace.
But to capture whole output it would need to prioritize reading of kmsg,
thus we would first log kernel messages and followed by command output.
As a trade-off always log command output first and use large drain
buffer so is captures most of messages, but occasionaly miss some
lines.
Basically reverts commit af8580d756.
"test: Use klogctl in the harness instead of reading /var/log/messages."
Problem is - this interface clears dmesg buffer
(just like call of dmesg -c)
Thus after running lvm2 test suitedmesg is empty - while all the
messages are usually logged in the journal/message, it's still not nice to
clear dmesg buffer.
It's not a pure revert, but switch to use /proc/kmsg directly instead of
reading /var/log/messages.
If we are stuck in user for too long without output,
grab kernel stack traces.
If we just produce too many lines of output, it's
not probably kernel related bug.
When the test is interrupted because debug.log has got to big,
and the test doesn't react on SIGINT - and needs to be only
killed with SIGKILL - it's still valuable to print at least
a portion of this debug.log (currently 4MB).
LVM_TEST_UNLIMITED could be set to avoid this limitation
(i.e. when busy-looping lvm command needs to be running
for gdb attachment)
Reshape code a bit to make sockepair 'swappable' with plain old pipe
call.
Display status for FAILED error.
Increase buffer to hold always at least 1 page size.
Print error results with capitals.
Add a very simple hack for embeding /var/log/messages into
the tests output - it's not ideal since it sometimes breaks lines,
but still gives valuable info.
Add limit for buffer so if the test is running in some loop
and generating lots of output, the output log gets too large
for browser to display (at least Firefox is quite confused
to display 300MB logs).
For now limit max output of one test to 32MB.
If there is need to see full log set LVM_TEST_UNLIMITED to
disable interruption of test.
harness now also prints max memory used during test,
it user and system time and amount of read/write operations.
This means that a test failure in one flavour no longer prevents all the
subsequent flavours from running. We also get an aggregate summary at
the end of the entire batch, instead of summaries interspersed with
progress output. Do not fail when flavour overrides are empty
Support timestamping with harness - using VERBOSE=2
Fix also logging in several situation
(i.e. continue logging multiple test in VERBOSE mode,
do not coredump with empty output).
Cleanup generated files from coverage testing.
Do not skip standard .o compilation for lib/not and lib/harness.
Make a bit longer string in harness to fit new shell/ in.
When read in drain returned <0 value, terminal content has been trashed.
Remove unneeded memset() and use whole buffer.
Free readbuf before exit (valgrind).
Harness seems to be able to busyloop in while cycle and not moving forward
for certain buffer - so check whethere there was some progress.
This fix allows to continue after failed cluster test.
Fix gcc warning for hiding global variable 's' -> sig.
