First we create a pool name www: zpool create www da1 da2 da3 da4 da5 da6 Then replace da6 with a new disk. when reboot the box,panic when booting: ZFS:vdev failure,zpool=ww type=vdev.bad_label painc:solaris assert:vdev_config_sync(rvd,txg)==0,file:/usr/src/sys/modules/zfs/../../cddl/contrib/oensolaris/utf/common/fs/zfs/spa.c,line:3014