Hello I discovered another scenario where force unmount could not work: an unresponsive PUFFS filesystem. The filesystem got out of order during an operation where the filesystem root vnode is locked. As a result, trying to unmount goes this way
sys_unmount -> namei -> namei_tryemulroot -> lookup_once -> VFS_ROOT -> puffs_vfsop_root -> vn_lock -> VOP_LOCK and we loose. I can kill the userland process, but the mount remains, an any attempt to touch it sinks in tstile. Any idea how can that be fixed? -- Emmanuel Dreyfus http://hcpnet.free.fr/pubz m...@netbsd.org
