Ben Greear: > The second command fails, saying / is busy. > lsof of / shows lots of files. lsof of /cow shows none.
You should investigate the printed file list, and find the file which prevents /cow turning RO. Generally, the shutdown script kills most of all processes, and then unmount all filelsystems (except the root). The root dir is remounted as RO. The "remount,mod:/cow=ro" is logically equivalent to "remount,ro". > All the rest of the command succeed, however, and it appears /cow is > properly mounted (ro) and cleaned up. Failing to "remount,mod:/cow=ro" means that the file on /cow is opened as RW, and "remount,ro /cow" should also fail. On your system, there might exists a short-lived process which accesses / (and /cow) as RW. You should find the process. J. R. Okajima ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
