git: d6bc31f92991 - main - makefs/zfs/tests: Force-destroy md devices

The branch main has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=d6bc31f92991b6d67da54868f3563278015389ca

commit d6bc31f92991b6d67da54868f3563278015389ca
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2026-01-25 15:12:19 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2026-01-25 22:41:10 +0000

    makefs/zfs/tests: Force-destroy md devices
    
    Most of these tests create a md(4) device backed by a makefs-generated
    image, then import the pool, using the md device as a pool vdev.  When
    a test finishes, it destroys the pool, then destroys the md device.
    
    Once in a while md device destruction fails with EBUSY.  This happens
    when a GEOM consumer is holding the device open; kern_mddetach_locked()
    simply fails if any consumers are present.  zpool destruction is
    synchronous so ZFS is innocent, rather, the problem seems to be that
    GEOM re-tastes the device after the zpool reference goes away.  This
    operation creates a transient reference that causes the spurious
    failure.
    
    Use "mdconfig -o force" to work around this.
    
    MFC after:      2 weeks
---
 usr.sbin/makefs/tests/makefs_zfs_tests.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/usr.sbin/makefs/tests/makefs_zfs_tests.sh b/usr.sbin/makefs/tests/makefs_zfs_tests.sh
index 9d5ce300843e..7f0187be054f 100644
--- a/usr.sbin/makefs/tests/makefs_zfs_tests.sh
+++ b/usr.sbin/makefs/tests/makefs_zfs_tests.sh
@@ -51,7 +51,7 @@ common_cleanup()
 	if [ -f "$TEST_MD_DEVICE_FILE" ]; then
 		md=$(cat $TEST_MD_DEVICE_FILE)
 		if [ -c /dev/"$md" ]; then
-			mdconfig -d -u "$md"
+			mdconfig -o force -d -u "$md"
 		fi
 	fi
 }
@@ -210,7 +210,7 @@ compression_body()
 
 		atf_check zpool destroy ${ZFS_POOL_NAME}
 		atf_check rm -f ${TEST_ZFS_POOL_NAME}
-		atf_check mdconfig -d -u $(cat ${TEST_MD_DEVICE_FILE})
+		atf_check mdconfig -o force -d -u $(cat ${TEST_MD_DEVICE_FILE})
 		atf_check rm -f ${TEST_MD_DEVICE_FILE}
 	done
 }