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Going forward, we would like to allow users to specify the total
number of metadatacopies in a VG rather than on a per-PV basis. In
order to facilitate that, introduce --pvmetadatacopes to replace
--metadatacopies everywhere. We still allow --metadatacopies for
pv commands, but require --pvmetadatacopies for vg commands.
Eventually we will introduce --vgmetadatacopies. Once we do that,
we should either deprecate --metadatacopies or make it a synonym based
on the command (pvmetadatacopies for pv commands, and vgmetadatacopies
for vg commands). The latter option would likely just require a simple
'strncpy' check against cmd->command->name to qualify the merge_synonym
call.
Update nightly tests to cover the pvmetadatacopies synonym.
Note that this patch is the result of an eariler review comment for
the implicit pvcreate patches. Should apply cleanly on top of the
implicit pvcreate patches (I applied after patch 10/10 in that series).
NOTE: This patch will require --pvmetadatacopies for vgconvert as
--metadatacopies is no longer accepted.
Adds implicit pvcreate support when calling vgcreate or vgextend with
device paths that are not yet PVs. This changes the behavior of vgcreate
and vgextend from failing with an error message to implicitly pvcreating.
Split pvcreate_validate_params into recovery and non-recovery parameters.
This is necessary so we can call the non-recovery validate function from
vgextend / vgcreate. Note in the pvcreate tool case, we must call the
recovery validation function first (see treatment of pe_start and --zero),
and that we add a call to fill_default_pvcreate_params before the validation
functions.
Another refactoring for implicit pvcreate support. We need to get
the pvcreate parameters somehow to the vg_extend routine. Options
seemed to be:
1. Attach the parameters to struct volume_group. I personally
did not like this idea in most cases, though one could make an
agrument why it might be ok at least for some of the parameters
(e.g. metadatacopies).
2. Pass them in to the extend routine. This second route seemed
to be the best approach given the constraints.
Future patches will parse the command line and fill in the actual
values for the pvcreate_single call.
Should be no functional change.
Clean up VG_RESIZEABLE flag by creating vg_is_resizeable().
Update comment - we no longer have ALLOW_RESIZEABLE.
Also use vg_is_exported() in one place missed by earlier patch.
Should be no functional change.
Remove the checks for vg_read_error() in most of the tools callback
functions and instead make the check in _process_one_vg() more general.
In all but vgcfgbackup, we do not want to proceed if we get any error
from vg_read(). In vgcfgbackup's case, we may proceed if the backup
is to proceed with inconsistent VGs. This is a special case though,
and we mark it with the READ_ALLOW_INCONSISTENT flag passed to
process_each_vg (and subsequently to _process_one_vg).
NOTE: More cleanup is needed in the vg_read_error() path cases.
This patch is a start.
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>
