From f5b017d9140d4df1b5928cb505b081f7b383c314 Mon Sep 17 00:00:00 2001
From: Alexander Motin <mav@FreeBSD.org>
Date: Wed, 28 Mar 2018 22:08:57 +0000
Subject: [PATCH] 9191 dump vdev tree to zfs_dbgmsg when spa load fails due to
 missing log devices

illumos/illumos-gate@ccef24b493bcbd146fcd6d8946666cae081470b6

Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Matt Ahrens <matt@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Author: Pavel Zakharov <pavel.zakharov@delphix.com>
---
 uts/common/fs/zfs/spa.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/uts/common/fs/zfs/spa.c b/uts/common/fs/zfs/spa.c
index ccee26fba26e..1a07e3a25f4c 100644
--- a/uts/common/fs/zfs/spa.c
+++ b/uts/common/fs/zfs/spa.c
@@ -1814,6 +1814,7 @@ spa_check_for_missing_logs(spa_t *spa)
 
 		if (idx > 0) {
 			spa_load_failed(spa, "some log devices are missing");
+			vdev_dbgmsg_print_tree(rvd, 2);
 			return (SET_ERROR(ENXIO));
 		}
 	} else {
@@ -1825,6 +1826,7 @@ spa_check_for_missing_logs(spa_t *spa)
 				spa_set_log_state(spa, SPA_LOG_CLEAR);
 				spa_load_note(spa, "some log devices are "
 				    "missing, ZIL is dropped.");
+				vdev_dbgmsg_print_tree(rvd, 2);
 				break;
 			}
 		}