[lvm-devel] [PATCH] fix vgcfgrestore segfault if PV is missing

[Milan Broz]

Fix segfault for vgcfgrestore on VG with missing PVs.

Caused by introducing MISSING_PV flag, previously
vg_read failed here.

Signed-off-by: Milan Broz <mbroz at redhat.com>
---
 lib/format_text/archiver.c |    6 ++++++
 test/t-covercmd.sh         |    7 ++++++-
 2 files changed, 12 insertions(+), 1 deletions(-)

diff --git a/lib/format_text/archiver.c b/lib/format_text/archiver.c
index 0406ae5..4da267e 100644
--- a/lib/format_text/archiver.c
+++ b/lib/format_text/archiver.c
@@ -333,6 +333,12 @@ int backup_restore_from_file(struct cmd_context *cmd, const char *vg_name,
 	if (!(vg = backup_read_vg(cmd, vg_name, file)))
 		return_0;
 
+	/*
+	 * If PV is missing, there is already message from read above
+	 */
+	if (vg_missing_pv_count(vg))
+		return 0;
+
 	return backup_restore_vg(cmd, vg);
 }
 
diff --git a/test/t-covercmd.sh b/test/t-covercmd.sh
index 445c7d9..ed191bc 100755
--- a/test/t-covercmd.sh
+++ b/test/t-covercmd.sh
@@ -14,6 +14,8 @@
 
 . ./test-utils.sh
 
+TEST_UUID="aaaaaa-aaaa-aaaa-aaaa-aaaa-aaaa-aaaaaa"
+
 get_lvs_()
 {
   case $(lvs --units s --nosuffix --noheadings -o $1_read_ahead "$vg"/"$lv") in
@@ -28,7 +30,7 @@ pvcreate $dev1
 pvcreate --metadatacopies 0 $dev2
 pvcreate --metadatacopies 0 $dev3
 pvcreate $dev4
-pvcreate --metadatacopies 0 $dev5
+pvcreate -u $TEST_UUID --metadatacopies 0 $dev5
 vgcreate -c n $vg $devs
 lvcreate -n $lv -l 5 -i5 -I256 $vg
 
@@ -67,6 +69,9 @@ lvrename "$vg" "$lv" "$lv-rename"
 vgcfgbackup -f "$(pwd)/backup.$$" "$vg"
 vgchange -an "$vg"
 vgcfgrestore  -f "$(pwd)/backup.$$" "$vg"
+pvremove -y -ff $dev5
+not vgcfgrestore  -f "$(pwd)/backup.$$" "$vg"
+pvcreate -u $TEST_UUID --restorefile  "$(pwd)/backup.$$" $dev5
 vgremove -f "$vg"
 pvresize --setphysicalvolumesize 10M "$dev1"