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Fixing few issues:
struct clvm_header contains 'char args[1]' - so adding '+ 1' here
for message length calculation is 1 byte off.
Message with last byte uninitialized is then passed to write function.
Update also related arglen.
Initialise xid and clintid to 0.
Memory allocation is checked for NULL
When the ->params string is empty - memory access is made on the byte
before allocated buffer (catched by valgrind) - in the case it would
constain 0x20 - it would even overwrite this buffer.
So fix by checking len > 0 before doing such access.
Also slightly optimise this loop from repeated strlen call.
lvseg_segtype_dup used memory pool vg memory pool for strind duplication.
However this one gets released before reporting happens so the command like:
pvs -o segtype
prints data from already released memory pool. Thanks to the fact there
is not much allocation happing after the VG is released, the memory
stays unmodified and correct result is printed.
Fix adds support for mempool passed parameter (like other similar
query commands) and uses dm_report memory pool for string duplication.
Failure on pipe kills lv command and produces memory stacktrace.
Add 'true' for empty grep/sed to avoid generating stacktrace.
This should help with long time (7min) for this test on Lenny testing maching
(mimage was filler with stacktrace and each word was used as LV name).
This lvconvert is now able to complete operation automatically without question.
So remove 'echo y |' - it's breaking pipe on some bash versions.
i.e.:
+ echo y
./t-lvconvert-mirror-basic.sh: line 104: echo: write error: Broken pipe
while command has completed this operation succesfully
While STRIPE_SIZE_LIMIT * 2 is basically UINT_MAX, 32bit integer
value can already overflow durin arg size parsing.
(This really happens in test where --stripesize 4294967291 is used,
in s390x uint overflow and this test is ineffective.)
- returned char not needed to be explicitly const
- warn if pipe() fails in clvmd (more fixes here needed for error paths...)
- assign (and ignore) read() output in drain buffer
Currently the test are not properly working with new code.
Use settings for the previous behaviour.
FIXME: update tests to properly test new allocation policies.
We allow writing non-orphan PVs only for resize now. The "orphan PV" assert
in pv_write fn uses the "allow_non_orphan" parameter to control this assert.
However, we should find a more elaborate solution so we can remove this
restriction altogether (pv_write together with vg_write is not atomic, we
need to find a safe mechanism so there's an easy revert possible in case of
an error).
There is a lot to test.
Two new config settings added that are intended to make the code behave
closely to the way it did before - worth a try if you find problems.
