我按照网上的教程 fsck.ext4 -y /dev/md3 mount -o remount -rw / root@ns532776:~# fsck.ext4 -y /dev/md3 bash: /usr/sbin/fsck.ext4: Input/output error root@ns532776:~# mount -o remount -rw / mount: /: /dev/md3 is write-protected but explicit read-write mode requested. 教程, 网上, remount