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This patch is all just cleanup and no other patch depends on it.
Replace explicit dereference and check with vg_is_exported().
Update a few copyrights and remove unnecessary whitespace.
Should be no functional change.
Split vg_remove_single into vg_remove_check (mandatory checks before
vgremove) and vg_remove (do actual remove by committing to disk).
In liblvm, we'd like to provide an consistent API that allows multiple
changes in memory, then let lvm_vg_write() control the commit to disk. In
some cases (for example, lvresize calls fsadm) this may not be possible.
However, since we are using an object model and dividing things into small
operations, the most logical model seems to be the lvm_vg_write model, and
handling the special cases as they arrive. So as best as possible
we move towards this end.
A possible optimization would be to consolidate vg_remove (committing)
code with vgreduce code. A second possible optimization is making vgreduce
of the last device equivalent to vgremove. Today, lvm_vg_reduce fails if
vgreduce is called with the last device, but from an object model perspective
we could view this as equivalent to vgremove and allow it. My gut feel is
we do not want to do this though.
Author: Dave Wysochanski <dwysocha@redhat.com>
Later patches should consolidate the vgremove / vgreduce functions but for
now let's clarify what vg_remove actually does by changing the name.
Author: Dave Wysochanski <dwysocha@redhat.com>
These functions are really identical but for clarity I made them separate
functions in this patch.
Should be no functional change.
Author: Dave Wysochanski <dwysocha@redhat.com>
If the destination vgname comes before the source vgname, we must open the
destination first because of the locking rules. Thus, do a strcmp and set
the flag based on the comparison.
Author: Dave Wysochanski <dwysocha@redhat.com>
Slight functional change. If we open the destination first, we cannot
know the 'fmt'. In this case we use the default metadata type unless
the user has specified -M on the cmdline. If not, in most cases this
is fine since we use the LVM2 default metadata type. However, if the
user is specifying a non-default metadata type (e.g. lvm1) and the order
of the names is such that we have to open the destination (vg_to) first,
we have a problem. So in this case, we require the use of -M and vgsplit
will fail with an error if not. I've updated the man page to recommend
the usage of -M in this case.
Author: Dave Wysochanski <dwysocha@redhat.com>
Move the creating/opening of the destination vg into its own function so later
we can reorder the source / destination vg opening based on the alphabetical
lock order rule.
Should be no functional change but code is a bit tricky.
Author: Dave Wysochanski <dwysocha@redhat.com>
Introduce 'lock_vg_from_first' flag to retain which vg was locked first.
Should be no functional change.
Author: Dave Wysochanski <dwysocha@redhat.com>
This will aid in future refactorings and allow for us to reorder the source
and destination vg based on alphabetical names.
Should be no functional change.
Author: Dave Wysochanski <dwysocha@redhat.com>
Full changes
- Fix vgextend error path when lock_vol(VG_ORPHANS) fails
- Move lock_vol(VG_ORPHANS) before archive(vg) - safe & simpler error paths
- Remove legacy comment/code that no longer applies
Found in review - Milan Broz <mbroz@redhat.com>
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Adds pe_align_offset to 'struct physical_volume'; is initialized with
set_pe_align_offset(). After pe_start is established pe_align_offset is
added to it.
Signed-off-by: Mike Snitzer <snitzer@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>
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>
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 72a41480ba
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>
