+ uname -a
DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #1: Sun Aug 30 04:30:11 UTC 2026     root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64
+ echo '===== PHASE A: identical clones (wedge regression) ====='
===== PHASE A: identical clones (wedge regression) =====
+ vnconfig -u vn0
+ vnconfig -u vn1
+ vnconfig -u vn2
+ vnconfig -u vn3
+ timeout 15 umount -f /mnt/h2
+ timeout 15 umount -f /mnt/h2b
+ timeout 15 umount -f /mnt/h2d
+ timeout 15 umount -f /mnt/h2e
+ mkdir -p /mnt/h2 /mnt/h2b /mnt/h2d /mnt/h2e
+ vnconfig -c vn0 /root/poc/base.img
+ vnconfig -c vn1 /root/poc/base.img
+ mount -t hammer2 -o ro /dev/vn0@testvol /mnt/h2
+ echo 'A_MOUNT1_RC=0'
A_MOUNT1_RC=0
+ mount -t hammer2 -o ro /dev/vn1@testvol /mnt/h2b
mount: Device busy
+ echo 'A_MOUNT2_RC=1'
A_MOUNT2_RC=1
+ sleep 12