[lvm-devel] [PATCH 35/38] Ensure --metadatacopies parameter gets interpreted based on command.

[Dave Wysochanski]

Now that we have both --pvmetadatacopies and --vgmetadatacopies,
we need to make sure --metadatacopies gets interpreted correctly.

For pv commands, --metadatacopies should imply --pvmetadatacopies,
and for vg commands, --vgmetadatacopies.

Note: this will change the behavior of vgcreate with --metadatacopies
to be a synonym for --vgmetadatacopies.  Previously, --metadatacopies
would apply to any PVs given with vgcreate that needed an implicit
pvcreate.  As a result, one small change is needed to one of the nightly
tests - t-vgcreate-usage.

Signed-off-by: Dave Wysochanski <dwysocha at redhat.com>
---
 test/t-vgcreate-usage.sh |    2 +-
 tools/lvmcmdline.c       |    9 +++++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/test/t-vgcreate-usage.sh b/test/t-vgcreate-usage.sh
index ffdad53..0253cc3 100755
--- a/test/t-vgcreate-usage.sh
+++ b/test/t-vgcreate-usage.sh
@@ -115,7 +115,7 @@ do
     vgremove -f $vg
     pvremove -f $dev1
 done
-not vgcreate -c n --metadatacopies 0 $vg $dev1
+not vgcreate -c n --pvmetadatacopies 0 $vg $dev1
 pvcreate --metadatacopies 1 $dev2
 vgcreate -c n --pvmetadatacopies 0 $vg $dev1 $dev2
 check_pv_field_ $dev1 pv_mda_count 0
diff --git a/tools/lvmcmdline.c b/tools/lvmcmdline.c
index 6a5479d..45762b5 100644
--- a/tools/lvmcmdline.c
+++ b/tools/lvmcmdline.c
@@ -827,8 +827,13 @@ static int _get_settings(struct cmd_context *cmd)
 	if (!_merge_synonym(cmd, resizable_ARG, resizeable_ARG) ||
 	    !_merge_synonym(cmd, allocation_ARG, allocatable_ARG) ||
 	    !_merge_synonym(cmd, allocation_ARG, resizeable_ARG) ||
-	    !_merge_synonym(cmd, virtualoriginsize_ARG, virtualsize_ARG) ||
-	    !_merge_synonym(cmd, metadatacopies_ARG, pvmetadatacopies_ARG))
+	    !_merge_synonym(cmd, virtualoriginsize_ARG, virtualsize_ARG))
+		return EINVALID_CMD_LINE;
+
+	if ((!strncmp(cmd->command->name, "pv", 2) &&
+	    !_merge_synonym(cmd, metadatacopies_ARG, pvmetadatacopies_ARG)) ||
+	    (!strncmp(cmd->command->name, "vg", 2) &&
+	     !_merge_synonym(cmd, metadatacopies_ARG, vgmetadatacopies_ARG)))
 		return EINVALID_CMD_LINE;
 
 	/* Zero indicates success */
-- 
1.6.0.6