I've added a probe in the umount rc script to see what's opened just before trying to umount filesystems. I can see the following
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME init 1 root cwd DIR 3,6 4096 2 / init 1 root rtd DIR 3,6 4096 2 / init 1 root txt REG 3,6 31368 512223 /sbin/init init 1 root mem REG 3,6 90152 416218 /lib/ld-2.3.2.so init 1 root mem REG 3,6 1279044 320309 /lib/tls/libc-2.3.2.so init 1 root 10u FIFO 3,6 176334 /dev/initctl migration 2 root cwd DIR 3,6 4096 2 / migration 2 root rtd DIR 3,6 4096 2 / ksoftirqd 3 root cwd DIR 3,6 4096 2 / ksoftirqd 3 root rtd DIR 3,6 4096 2 / events/0 4 root cwd DIR 3,6 4096 2 / events/0 4 root rtd DIR 3,6 4096 2 / kblockd/0 5 root cwd DIR 3,6 4096 2 / kblockd/0 5 root rtd DIR 3,6 4096 2 / khubd 6 root cwd DIR 3,6 4096 2 / khubd 6 root rtd DIR 3,6 4096 2 / khelper 7 root cwd DIR 3,6 4096 2 / khelper 7 root rtd DIR 3,6 4096 2 / pdflush 8 root cwd DIR 3,6 4096 2 / pdflush 8 root rtd DIR 3,6 4096 2 / pdflush 9 root cwd DIR 3,6 4096 2 / pdflush 9 root rtd DIR 3,6 4096 2 / kswapd0 10 root cwd DIR 3,6 4096 2 / kswapd0 10 root rtd DIR 3,6 4096 2 / aio/0 11 root cwd DIR 3,6 4096 2 / aio/0 11 root rtd DIR 3,6 4096 2 / cifsoploc 17 root cwd DIR 3,6 4096 2 / cifsoploc 17 root rtd DIR 3,6 4096 2 / kseriod 138 root cwd DIR 3,6 4096 2 / kseriod 138 root rtd DIR 3,6 4096 2 / shpchpd_e 703 root cwd DIR 3,6 4096 2 / shpchpd_e 703 root rtd DIR 3,6 4096 2 / pciehpd_e 718 root cwd DIR 3,6 4096 2 / pciehpd_e 718 root rtd DIR 3,6 4096 2 / rc 2187 root cwd DIR 3,6 4096 2 / rc 2187 root rtd DIR 3,6 4096 2 / rc 2187 root txt REG 3,6 628684 32014 /bin/bash rc 2187 root mem REG 3,6 90152 416218 /lib/ld-2.3.2.so rc 2187 root mem REG 3,6 252592 416247 /lib/libncurses.so.5.4 rc 2187 root mem REG 3,6 9432 320311 /lib/tls/libdl-2.3.2.so rc 2187 root mem REG 3,6 1279044 320309 /lib/tls/libc-2.3.2.so rc 2187 root mem REG 3,6 30576 320315 /lib/tls/libnss_compat-2.3.2.so rc 2187 root mem REG 3,6 74264 320314 /lib/tls/libnsl-2.3.2.so rc 2187 root mem REG 3,6 34948 320319 /lib/tls/libnss_nis-2.3.2.so rc 2187 root mem REG 3,6 35288 320317 /lib/tls/libnss_files-2.3.2.so rc 2187 root 0u CHR 5,1 176041 /dev/console rc 2187 root 1u CHR 5,1 176041 /dev/console rc 2187 root 2u CHR 5,1 176041 /dev/console rc 2187 root 255r REG 3,6 2717 544093 /etc/init.d/rc S40umount 2395 root cwd DIR 3,6 4096 2 / S40umount 2395 root rtd DIR 3,6 4096 2 / S40umount 2395 root txt REG 3,6 628684 32014 /bin/bash S40umount 2395 root mem REG 3,6 90152 416218 /lib/ld-2.3.2.so S40umount 2395 root mem REG 3,6 252592 416247 /lib/libncurses.so.5.4 S40umount 2395 root mem REG 3,6 9432 320311 /lib/tls/libdl-2.3.2.so S40umount 2395 root mem REG 3,6 1279044 320309 /lib/tls/libc-2.3.2.so S40umount 2395 root mem REG 3,6 30576 320315 /lib/tls/libnss_compat-2.3.2.so S40umount 2395 root mem REG 3,6 74264 320314 /lib/tls/libnsl-2.3.2.so S40umount 2395 root mem REG 3,6 34948 320319 /lib/tls/libnss_nis-2.3.2.so S40umount 2395 root mem REG 3,6 35288 320317 /lib/tls/libnss_files-2.3.2.so S40umount 2395 root 0u CHR 5,1 176041 /dev/console S40umount 2395 root 1u CHR 5,1 176041 /dev/console S40umount 2395 root 2u CHR 5,1 176041 /dev/console S40umount 2395 root 255r REG 3,6 583 544108 /etc/init.d/umountfs lsof 2401 root cwd DIR 3,6 4096 2 / lsof 2401 root rtd DIR 3,6 4096 2 / lsof 2401 root txt REG 3,6 115192 544956 /usr/bin/lsof lsof 2401 root mem REG 3,6 90152 416218 /lib/ld-2.3.2.so lsof 2401 root mem REG 3,6 1279044 320309 /lib/tls/libc-2.3.2.so lsof 2401 root 0u CHR 5,1 176041 /dev/console lsof 2401 root 1w REG 3,6 33 130315 /var/log/reboot.log lsof 2401 root 2u CHR 5,1 176041 /dev/console lsof 2401 root 3r DIR 0,3 0 1 /proc lsof 2401 root 4r DIR 0,3 0 157351945 /proc/2401/fd lsof 2401 root 5w FIFO 0,7 8662 pipe lsof 2401 root 6r FIFO 0,7 8663 pipe lsof 2402 root cwd DIR 3,6 4096 2 / lsof 2402 root rtd DIR 3,6 4096 2 / lsof 2402 root txt REG 3,6 115192 544956 /usr/bin/lsof lsof 2402 root mem REG 3,6 90152 416218 /lib/ld-2.3.2.so lsof 2402 root mem REG 3,6 1279044 320309 /lib/tls/libc-2.3.2.so lsof 2402 root 4r FIFO 0,7 8662 pipe lsof 2402 root 7w FIFO 0,7 8663 pipe What is preventing the umount? Thanks Pau Capdevila -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
