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As the library handle has a dm pool associated with
it for long running processes it is required to close and
re-open the library to free the dm pool. Call added so
python clients can reclaim memory, lvm.gc().
Note: Any python objects on the heap become invalid at the
time this call is made. If referenced, a seg. fault could
occur. No simple way to make this safe with the current
memory management in the C library. Use with caution!
Signed-off-by: Tony Asleson <tasleson@redhat.com>
After the last rebase, existing unit test case was
run which uncovered a number of errors that required
attention.
Uninitialized variables and changes to type of numeric
return type were addressed.
Signed-off-by: Tony Asleson <tasleson@redhat.com>
As locks are held, you need to call the included function
to release the memory and locks when done transversing the
list of physical volumes.
V2: Rebase fix
V3: Prevent VGs from getting cached and then write protected.
Signed-off-by: Tony Asleson <tasleson@redhat.com>
It isn't possible to choose a sane default for snapshot size, so just
play it straight and use the passed size instead of adding special
behavior for 0.
Also revert change to Python lib, size parameter must be supplied.
Signed-off-by: Andy Grover <agrover@redhat.com>
If no size is given, size defaults to 0, which in lvm_lv_snapshot will
allocate extents equal to the original LV be allocated for the new
snapshot.
Signed-off-by: Andy Grover <agrover@redhat.com>
Tabify
Remove use of asize, unneeded.
Don't initialize lvobj->parent_vgobj to NULL, the object ctor already
zeroed everything on alloc.
Redo call to lvm_lv_snapshot to use the liblvm snapshot implementation
we went with.
Add {}s to silence warning in lv_dealloc.
Rename snapshot function for consistency.
Update WHATS_NEW.
Signed-off-by: Andy Grover <agrover@redhat.com>
Issues found (thus far) in unit test developemnt for python bindings.
Added Py_DECREF(ptr) in liblvm_lvm_vg_open & liblvm_lvm_vg_create
in error paths so that we correctly clean up memory.
Added a call to lvm_vg_close when we remove a vg. The code was
clearing out the vg pointer which prevented us from actually
calling lvm_vg_close in the close path.
liblvm_lvm_vg_create_lv_linear was not initializing
lvobj->parent_vgobj and if lvm_vg_create_lv_linear failed
we went through liblvm_lv_dealloc on clean up and tried to
Py_DECREF an invalid pointer.
Signed-off-by: Tony Asleson <tasleson@redhat.com>
The first parameter needs to be present even if it isn't being
used, otherwise the one any only parameter we get is null
which causes PyArg_ParseTuple to seg. fault.
Signed-off-by: Tony Asleson <tasleson@redhat.com>
Our object nesting:
lib -> VG -> LV -> lvseg
-> PV -> pvseg
Implement refcounting and checks to ensure parent objects are not
dealloced before their children. Also ensure calls to self or child's
methods are handled cleanly for objects that have been closed or removed.
Ensure all functions that are object methods have a first parameter named
'self', for consistency
Rename local vars that reference a Python object to '*obj', in order to
differentiate from liblvm handles
Fix a misspelled pv method name
Signed-off-by: Andy Grover <agrover@redhat.com>
Instead of requiring users to create a liblvm object, and then calling
methods on it, the module acquires a liblvm handle as part of
initialization. This makes it impossible to instantiate a liblvm object
with a different systemdir, but there is an alternate envvar method for
that obscure use case.
Signed-off-by: Andy Grover <agrover@redhat.com>
Use configure --enable-python_bindings to generate them.
Note that the Makefiles do not yet control the owner or permissions of
the two new files on installation.
