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Limited implementation but other types of activation should probably have
separate calls. We also currently do not handle pvmoves or lvconverts.
Author: Dave Wysochanski <dwysocha@redhat.com>
For now, liblvm will return -1 (fail) / 0 (success) or
NULL (fail) / non-NULL (success). Upon failure, lvm_errno and
lvm_errmsg should be used to determine the precise error.
Author: Dave Wysochanski <dwysocha@redhat.com>
For now, we use the following scheme.
For APIs that return an int, success is 0, fail is -1.
APIs that return handles, success is non-NULL, fail is NULL.
At this early stage, liblvm error handling mechanism is subject to change,
but for now we go with this simple scheme consistent with system
programming.
Author: Dave Wysochanski <dwysocha@redhat.com>
Hard to divide into smaller patches because of the moving around and
commenting, so just put in the new file diffs. We will review and can
update as necessary.
Author: Dave Wysochanski <dwysocha@redhat.com>
Add a very simple version of lvm_vg_remove_lv.
Since we currently can only create linear LVs, this simple remove function
is adequate. We must refactor lvremove_single a bit.
Author: Dave Wysochanski <dwysocha@redhat.com>
Add the most straightforward 'get' functions required for anaconda.
These are the ones that return simple uint64_t values.
The other more complex ones involve the lv_attr bits. These will
come in a separate patch series since each lv_attr bit will be returned
in a separate API instred of returning the string and requiring the
user to parse it.
Author: Dave Wysochanski <dwysocha@redhat.com>
For liblvm 'get' functions, we should share code with the reporting functions.
This means we need common code to return the values for the fields.
In this patch we refactor a few of the fields needed in liblvm.
Unfortunately, for the simple fields that do derefernces of structure
members (for example, vg_extent_count), we cannot call the common function
from the reporting infrastructure without more refactoring. The reason is
that the dereference of the simple fields is done deep inside the reporting
code (to get the generic "data" pointer), and the display function is a
generic 'size32' function. We can fix these issues later with more
refactoring.
Should be no functional change and the testsuite should cover any possible
regressions. The only fields in the report affected by this patch are:
vg_size, vg_free, and pv_mda_count.
Author: Dave Wysochanski <dwysocha@redhat.com>
After some refactorings, we can now move the bulk of _lvcreate into the
internal library, and we can call from liblvm. In the future, we should
refactor lv_create_single further, probably by segtype, to reduce the
size of struct lvcreate_params. For now this is a reasonable refactor
and allows us to re-use the function from liblvm.
Author: Dave Wysochanski <dwysocha@redhat.com>
The main _lvcreate function should deal with extents - the 'size' parameter
is just an intermediate step.
Should be no functional change.
Author: Dave Wysochanski <dwysocha@redhat.com>
Create a new structure, lvcreate_cmdline_params, to store parameters only
relevant for the cmdline, not the library call to lvcreate.
Should be no functional change.
Author: Dave Wysochanski <dwysocha@redhat.com>
Move extents calculation adjustments into their own local functions
right after we read the vg. This calculation really is not part of
the LV create function but is rather an adjustment to the parameters
based on what is given on the cmdline. So we move it outside the main
_lvcreate.
Should be no functional change.
Author: Dave Wysochanski <dwysocha@redhat.com>
A couple simple refactorings of _lvcreate - should be no functional change.
Move tags_ARG parsing into _lvcreate_params. Also use lp->voriginsize
instread of arg_count(). These refactorings make it easier to move the
bulk of _lvcreate into the library.
Author: Dave Wysochanski <dwysocha@redhat.com>
Although the tools do not currently do this, we update lvm_vg_extend
to do an implicit pvcreate on an uninitialized device. The tools will
soon be refactored to do this as well, but more work is needed in the
tools. For now we update lvm_vg_extend since this is the behavior
required by liblvm.
With this change, the simple liblvm unit test, test/api/vgtest.c
should pass whether or not the device is initialized.
Author: Dave Wysochanski <dwysocha@redhat.com>
The implicit pvcreate require either moving the ORPHAN_VG lock outside
pvcreate_single or somehow having the function know or detect whether
the ORPHAN_VG lock is already held.
Author: Dave Wysochanski <dwysocha@redhat.com>
Passing NULL for pvcreate parameters gives you default parameters for
pvcreate_single.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Author: Dave Wysochanski <dwysocha@redhat.com>
In preparation for implicit pvcreate during vgcreate / vgextend,
move bulk of pvcreate logic inside library.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Author: Dave Wysochanski <dwysocha@redhat.com>
We must hold the VG_ORPHAN lock until we commit to disk. Otherwise,
we risk a race condition on vgcreate / vgextend. Reverts the following
commit:
commit 72a41480ba66d7dc2d05ef8583080b6b08208507
Author: Dave Wysochanski <dwysocha@redhat.com>
Date: Fri Jul 10 20:09:21 2009 +0000
Move orphan lock obtain/release inside vg_extend().
With this change we now have vgcreate/vgextend liblvm functions.
Note that this changes the lock order of the following functions as the
orphan lock is now obtained first. With our policy of non-blocking
second locks, this should not be a problem.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
