File 0011-writecache-don-t-pvmove-device-used-by-writecache.patch of Package lvm2

From e7f107c24666c8577f30e530b74f1ce0347e459b Mon Sep 17 00:00:00 2001
From: David Teigland <teigland@redhat.com>
Date: Wed, 2 Jun 2021 11:12:20 -0500
Subject: [PATCH 11/33] writecache: don't pvmove device used by writecache

The existing check didn't cover the unusual case where the
cachevol exists on the same device as the origin LV.

Signed-off-by: Heming Zhao <heming.zhao@suse.com>
---
 tools/pvmove.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tools/pvmove.c b/tools/pvmove.c
index da635a662d4c..bb372f7dcaeb 100644
--- a/tools/pvmove.c
+++ b/tools/pvmove.c
@@ -387,6 +387,15 @@ static struct logical_volume *_set_up_pvmove_lv(struct cmd_context *cmd,
 			return NULL;
 		}
 
+		if (lv_is_writecache(lv)) {
+			struct logical_volume *lv_cachevol = first_seg(lv)->writecache;
+			if (lv_is_on_pvs(lv_cachevol, source_pvl)) {
+				log_error("Unable to move device used for writecache cachevol %s.", display_lvname(lv_cachevol));
+				return NULL;
+			}
+
+		}
+
 		if (lv_is_raid(lv) && lv_raid_has_integrity(lv)) {
 			log_error("Unable to pvmove device used for raid with integrity.");
 			return NULL;
-- 
1.8.3.1
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