Am 16.02.2015 um 12:47 schrieb Michael D. Setzer II:

On 16 Feb 2015 at 11:30, Reindl Harald wrote:

...

/dev/sda1 is a ordinary partition containing only /boot why does the kernel report it is in use?

The kernel reports it as being mount

but why

since it normally is as part of the boot process.

looks like you missed thed "for unmounted filesystems" in the subject

/dev/sda1 is mount as /boot You can usually umount it if no one is in it , or actually using it umount /boot

df will show the mounted partitions.

umount /boot fsck /dev/sda1

i know that all *but* i did "umount /boot" and hence i expect to be able doing a fsck instead once again "touch /forcefsck" and reboot

otherwise the message would not be "/dev/sda1 is in use" if it is mounted it's "/dev/sda1 is mounted"

so it is in use by whom and why after unmount?

...

if that would be true it could not be unmounted ___________________________________________

[root@asterisk:~]$ /usr/sbin/fsck.ext4 -f /dev/sda1 e2fsck 1.42.12 (29-Aug-2014) /dev/sda1 is in use. e2fsck: Cannot continue, aborting. ___________________________________________

[root@asterisk:~]$ lsof | grep /dev/sda1 [root@asterisk:~]$ ___________________________________________

[root@asterisk:~]$ /usr/sbin/fsck.ext4 -n /dev/sda1 e2fsck 1.42.12 (29-Aug-2014) Warning! /dev/sda1 is in use. boot was not cleanly unmounted, check forced. Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Free blocks count wrong (454751, counted=469570). Fix? no

Free inodes count wrong (130215, counted=130220). Fix? no

boot: 345/130560 files (22.6% non-contiguous), 66464/521215 blocks