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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 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>
The lvm_list_vg_{names|ids} functions do not do a scan so we provide
a liblvm function that does a scan.
Author: Dave Wysochanski <dwysocha@redhat.com>
These functions provide the capability of enumerating all vgnames and
vgids in the system. They do not do a scan of the system.
Author: Dave Wysochanski <dwysocha@redhat.com>
Caller must free the memory of the uuid / name returned.
This may not be the best memory management policy since it may lead to
memory leaks if the caller has code like this:
if (!lvm_vg_get_name(vg))
Maybe we don't care - if we do we can use pools tied to handles later
or some other scheme.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Acked-by: Thomas Woerner <twoerner@redhat.com>
- Use vgmem pool to allocate a list of lvm_*_list structs
- Allocate a new list each call (list may have changed since last call)
- Add to liblvm's exported symbols
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Acked-by: Thomas Woerner <twoerner@redhat.com>
- pv_t, vg_t, lv_t
- include libdevmapper.h: needed for struct dm_list
These list structures will be needed in later APIs to return a list of
handles to one object, given another object. For example, lvm_vg_list_lvs()
will return a list of LV handles (lv_t's) given a VG handle (vg_t). We
need a structure to do this so we define the LV structure, as well as the
other structures at this point.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Some of the error interface is still TBD. Rather than exporting a lot
of codes, etc, just use a simple pass / fail. The allows our unit test
to not segfault if trying to create a VG that already exists.
lvm_vg_open() calls internal vg_read() function which is the entry point
for reading an existing VG. In addition to the mode, we include a 'flags'
parameter for future extensions.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Reverts some of my 'cleanup' from last night. For now we will use pass/fail
on API calls (either 'int' return or NULL/non-NULL handle), then use
lvm_errno() to get more specific errors.
Author: Dave Wysochanski <dwysocha@redhat.com>
made to compensate for the changes in the kernel-side component
that recently went upstream. (Things like: renamed structures,
removal of structure fields, and changes to arguments passed
between userspace and kernel.)
Use const and PRIu64.
Signed-off-by: Thomas Woerner <twoerner@redhat.com>
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Author: Thomas Woerner <twoerner@redhat.com>
Committer: Dave Wysochanski <dwysocha@redhat.com>
These messages are unnecessary in the set functions. We check for this
condition and print a message in the vgchange tool but not the library
functions.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
When converting to the new liblvm functions, the vgcreate code path
changed to create a new vg, then set values. As a result of this
change, and the fact that we give a user a message if they try to
set the same value of a VG attribute (extent_size, alloc_policy, etc),
you'll see these 2 extraneous "is already" messages with vgcreate:
tools/lvm vgcreate vg2 /dev/loop2
Physical extent size of VG vg2 is already 4.00 MB
Volume group allocation policy is already normal
Volume group "vg2" successfully created
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Author: Dave Wysochanski <dwysocha@redhat.com>
Since we are using errno values, we should use '0' as a default value
which indicates a non-error, rather than defining some made-up default
value that is not defined in errno. If we need to deviate from errno
values, this will most likely indicate a flaw in our design.
Add prototypes for lvm_errno and lvm_errmsg inside lvm.h and provide
a basic description of their function. This fixes a couple compile
warnings.
Author: Dave Wysochanski <dwysocha@redhat.com>
