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Everywhere else in the API the caller can rely on lvm2app taking care of
memory allocation and free, so make the 'name' and 'uuid' properties of a
vg/lv/pv use the vg handle to allocate memory.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
We should write metadata into next position in the ring buffer while calling
vgrename and vgcfgrestore. At this code level (_vg_write_raw), we were not able
to determine if this is a rename or not. If yes, then accompanying VG structure
passed here has a new name set, not the old one.
When looking for a location where to put metadata next, we were given a NULL
value because of failed VG name comparison (in _find_vg_rlocn) between the
name in existing metadata and metadata we're just about to write.
This resets the position in the ring buffer, overwriting any existing metadata
(and also incorrectly updates the cache to "orphan" afterwards).
This patch just adds old_name item in struct volume_group that we can check and use
if necessary and detect renames at lower layers as well.
The same applies for vgcfgrestore, but here we're using a special value of
old_name, an empty string, to disable the check with existing metadata totally.
Internally, we used DM names instead of UUIDs while processing event
handlers. This caused problems while trying to vgrename a VG with active LVs
where the names are being changed and so the devices were not found then.
The patch also contains a little bit of refactoring, moving "build_dlid" code
found in dev_manager.c to "build_dm_uuid", now in lvm-string.c (so we have
build_dm_uuid and build_dm_name at one place).
lvm2app needs a link back to the vg in order to use the vg handle for
memory allocations as well as other things. This patch adds the field
to struct physical_volume, and sets pv->vg when reading a vg from disk or
extending a vg by using the helper function previously added,
add_pvl_to_vgs(). Moves and renames are handled with separate code
inside move_pv() and vgmerge(). Add pv->vg check to vg_validate().
A NULL value in pv->vg signifies membership in the orphan VG.
Note though in the case of pv_read() on a device with metadatacopies == 0,
more devices may need to be read for an authoritative answer.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Now that we have library functions to add/delete a pv from the vg->pvs
list, call them from everywhere.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Add a delete function to manage the vg->pvs list.
NOTE: It may be possible to do further cleanup to these add/del functions
by passing a 'pv' as input instead of 'pv_list'. The pv_list is used for
functions which do allocations (lvcreate) while other places in the code
just manage a list of 'pv' (e.g. import functions, vgextend, etc).
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Move the increment of vg->pv_count next to the place where we add to
vg->pvs. It looks safe to do this since the only caller of import_pool_vg()
calls import_pool_pvs() immediately afterward, and there is no way
import_pool_vg() can fail (always returns 1). However, if there's a
memory allocation failure inside import_pool_pvs(), we will end up with
a different count in vg->pv_count that with the original code. In any
case, vg->pv_count should be as close to dm_list_size(&vg->pvs) as
possible, as is the case everywhere else in the code.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
The dm_list * parameter is unnecessary since we are passing in 'vg'
and the only caller of import_pool_pvs() passes '&vg->pvs' in the
dm_list * parameter. Just use vg->pvs directly in the function.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
{core|disk|mirrored}. However, under the options section they are
described as {core|disk} - even though the 'mirrored' argument is
described.
s/'{core|disk}'/'{core|disk|mirrored}'/
Fix unwanted modification of $(top_builddir)/make.tmpl.
Using dependency rules to install rules for udev.
There is minor problem, with concurent usage of builddir
and srcdir could lead to missuse of 10-dm.rules which
could be found in VPATH from different builddir.
However current solution uses intermediate target so
the generated 10-dm.rules exists only for short period of time
during make install execution.
