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- 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>
We provide a lock type that behaves like no_locking, but is not
clustered. Moreover, it also forbids any write locks. This magically (and
consistently) prevents use of clustered VGs, or changing local VGs with
--ignorelockingfailure. As a bonus, we can remove the special hacks in a few
places. Of course, people looking for trouble can always set their locking_type
to 0 to override.
In _process_one_vg, we should never proceed if the VG read fails with certain
conditions. If we cannot allocate or construct the volume_group structure,
we should not proceed - this is true regardless of the tool calling the
iterator. In other cases, when the volume group structure is constructed but
there is some error (PVs missing, metadata corrupted, etc), some tools may
want to process the VG while others may not.
Author: Dave Wysochanski <dwysocha@redhat.com>
In vg_backup_single, we should error out if we vg_read_error(vg) and the
error code we received was anything other than FAILED_INCONSISTENT.
Original code contained an error because C operator precedence.
Note - this was part of the vg_read() so no WHATS_NEW entry neceesary.
Author: Dave Wysochanski <dwysocha@redhat.com>
