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Avoid starting test, when test dir has less then 50M of free space.
Better to crash early before letting die machine on weird crash
in OOM cases...
Also show free disk space when test starts
Fix code checking that the 2nd mda which is at the end of disk really
fits the available free space and avoid any DA and MDA interleaving when
we already have DA preallocated. This mainly applies when we're restoring
a PV from VG backup using pvcreate --restorefile where we may already have
some DA preallocated - this means the PV was in a VG before with already
allocated space from it (the LVs were created). Hence we need to avoid
stepping into DA - the MDA can never ever be inside in such case!
The code responsible for this calculation was already in
_text_pv_add_metadata_area fn, but it had a bug in the calculation where
we subtracted one more sector by mistake and then the code could still
incorrectly allocate the MDA inside existing DA. The patch also renames
the variable in the code so it doesn't confuse us in future.
Also, if the 2nd mda doesn't fit, don't silently continue with just 1
MDA (at the start of the disk). If 2nd mda was requested and we can't
create that due to unavailable space, error out correctly (the patch
also adds a test to shell/pvcreate-operation.sh for this case).
Commit 8a912d6dbc missed the wrong logic,
we use 2 vars 'dev' & 'mddev' and their usage can't be mixed.
So correctly separate them so mddev keeps name of MD device.
During test do a more close selection of visible devices.
If some test leaks a device with LVMTEST prefix, next
test should not be influnced (or parallel running one).
If the test is running in non-/dev dir - it's already protected
by full path with $PREFIX in it - however it test is running
in real /dev dir - there was no such protection and test
were confused when they have seen such leaked device.
Patch 72a58ce4b0 was wronly placing
double quotes around this variable which we want to pass expanded,
as it's just set of 'space' device args ATM.
TODO consider using array[@] to make this cleaner.
Add shellcheck directive to skip warning here
Changes:
- BASH_SOURCE index was one off.
- The first line of stacktrace was pure confusion displaying executed
script together with innermost line number (which was either 125 when
STACKTRACE or 229 when skip was called.)
- We can safely ignore innermost call, as stack trace is always produced
by stacktrace function.
- It is safer to test for array length, instead of testing FUNCNAME is
main - if main function were introduced.
- Bashishm is safe to use as this function as a whole is relying on bash.
Use 1 logic for 2 loops tearing down left device.
First loops tries to remove all closed devices with 'normal' remove.
Second loop tries to replace those left devices with 'error' target.
We can't really sleep that much in teardown as it slows test too much.
So do a nested loop (similar to 'dmsetup remove_all') and keep
removing devices with open count == 0 as long as it works.
When we want to squash as much device as possible,
it's better to give it some delay, so devices have
some time to release it's resouces for next removal.
Also drop surrounding cookie processing and let each
dmsetup call run on its own.
Add missing get_devs.
When $7 is not given use empty string.
See if we can live with less RAM disk for PVs.
Drop limitation on single core as presence 1.12 should address this.
The checking order here has happend after TESTDIR was removed
resulting in weird further error on trap path.
Properly check for unexpected dmeventd before removing TESTDIR
since 'trap' codepath is still using it.
Also try to kill this unexpected dmeventd so testing is
not skipping all next dmeventd tests.
(Downside would be - if user would be accidentally starting
dmeventd by some regular system admin work - such dmeventd
might be killd if it's unused. It can't kill dmeventd in-use.
