On Thu, Apr 9, 2009 at 12:25 PM, <sf...@users.sourceforge.net> wrote: > > > I hope this description will help you. > > (from the aufs manual of aufs1) > ---------------------------------------------------------------------- > Module Parameters > > nwkq=N The number of kernel thread named aufsd. > > Those threads stay in the system while the aufs module is loaded, > and handle the special > I/O requests from aufs. The default value is 4. >
Sorry, I should have read the manpage. My mistake. > >> What happens due to which is, when the shutdown script ( rc.shutdown ) >> tried to remount root filesystem read-only ( mount -o remount,ro / ) , >> the kernel says: umount: / : device busy ! >> >> So, the ext3 root filesystem is not getting shutdown cleanly ! >> Kindly provide some pointers here.... > > Do you mean that your / is aufs containing ext3, and that ext3 cannot be > unmounted cleanly? > > > J. R. Okajima > No, my / is not aufs. Its normal ext3, but the directories /bin, /sbin, /lib and /usr are aufs ( unioned with /.squashfs/bin etc ). Hence at the end of the shutdown script, when it tries to remount / read-only ( mount -o remount,ro / ), the kernel complains umount: / : device is busy ! Thanks, Nitin. ------------------------------------------------------------------------------ This SF.net email is sponsored by: High Quality Requirements in a Collaborative Environment. Download a free trial of Rational Requirements Composer Now! http://p.sf.net/sfu/www-ibm-com
