lv_manip: show a warning during classic snapshot creation on a RaidLV.

The RaidLV will fail to activate in case of the loss of any of its snapshots.
Once created, commit 2760e804630a36bab2c3938ce9ac0b08c5e75395 will
catch any loss of such snapshots and provide remedy information.

(cherry picked from commit ae81b41811ede78b77f6badf0c65c88fa56cc951)

diff --git a/lib/metadata/lv_manip.c b/lib/metadata/lv_manip.c
index 577ffd0b37d62c15a9790998e2b9e073e210ae52..e7405f1dc74043ce477cb53214375a3cff55ac72 100644 (file)
--- a/lib/metadata/lv_manip.c
+++ b/lib/metadata/lv_manip.c
@@ -9654,6 +9654,11 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg,
                        goto revert_new_lv;
        }
 
+       if (lp->snapshot && origin_lv && lv_is_raid(origin_lv)) {
+               log_warn("WARNING: Loss of snapshot %s will cause the activation of the %s LV %s to fail!",
+                        lp->lv_name, lvseg_name(first_seg(origin_lv)), display_lvname(origin_lv));
+       }
+
        /* Do not scan this LV until properly zeroed/wiped. */
        if (_should_wipe_lv(lp, lv, 0))
                lv->status |= LV_NOSCAN;