File 0035-devices-don-t-use-deleted-loop-backing-file-for-devi.patch of Package lvm2

From ca930bd936de2e7d4a83fa64add800baf6cfd116 Mon Sep 17 00:00:00 2001
From: David Teigland <teigland@redhat.com>
Date: Tue, 8 Jun 2021 12:16:06 -0500
Subject: [PATCH 2/8] devices: don't use deleted loop backing file for device
 id

check for "(deleted)" in the backing_file string and
fall back to devname for id.

$ cat /sys/block/loop0/loop/backing_file
/root/looptmp (deleted)

Signed-off-by: Heming Zhao <heming.zhao@suse.com>
---
 lib/device/device_id.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/device/device_id.c b/lib/device/device_id.c
index 67f72e51b1ba..1b98487ab3a6 100644
--- a/lib/device/device_id.c
+++ b/lib/device/device_id.c
@@ -325,8 +325,12 @@ const char *device_id_system_read(struct cmd_context *cmd, struct device *dev, u
 	else if (idtype == DEV_ID_TYPE_MD_UUID)
 		_read_sys_block(cmd, dev, "md/uuid", sysbuf, sizeof(sysbuf));
 
-	else if (idtype == DEV_ID_TYPE_LOOP_FILE)
+	else if (idtype == DEV_ID_TYPE_LOOP_FILE) {
 		_read_sys_block(cmd, dev, "loop/backing_file", sysbuf, sizeof(sysbuf));
+		/* if backing file is deleted, fall back to devname */
+		if (strstr(sysbuf, "(deleted)"))
+			sysbuf[0] = '\0';
+	}
 
 	else if (idtype == DEV_ID_TYPE_DEVNAME) {
 		if (!(idname = strdup(dev_name(dev))))
-- 
1.8.3.1
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