après un preupgrade qui s'est bien deroulé j'ai un problème au boot :
il tente un fsck qui echoue !!! e2fsck returned with 8
me rend la main mais bien sûr je ne peux faire de fsck puisque le sda1 est monté
mais pourquoi veut-il faire un fsck ?
je m'en sors avec deux exit
le boot continue comme si de rien était
mais je ne sais quoi faire pour régler le problème

voilà les messages dans dmeg

[    1.391577] dracut: Starting plymouth daemon
[    1.437097] input: ImPS/2 Generic Wheel Mouse as /devices/platform/i8042/serio1/input/input3
[    1.524027] Refined TSC clocksource calibration: 2194.499 MHz.
[    1.524034] Switching to clocksource tsc
[    3.054723] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[    3.155841] dracut: Checking ext4: /dev/disk/by-uuid/6d078a3d-3a00-4cd9-849e-40a87cf5bf50
[    3.156245] dracut: issuing e2fsck -a  /dev/disk/by-uuid/6d078a3d-3a00-4cd9-849e-40a87cf5bf50
[    3.321746] dracut: /sys: clean, 14253/394352 files, 542088/1574362 blocks (check in 3 mounts)
[    3.322531] dracut: Remounting /dev/disk/by-uuid/6d078a3d-3a00-4cd9-849e-40a87cf5bf50 with -o ro
[    3.337197] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[    3.350569] dracut: Mounted root filesystem /dev/sda1
[    3.362989] dracut: Mounting from /sysroot/etc/fstab.sys
[    3.409912] dracut: Checking ext4: /dev/sda1
[    3.410299] dracut: issuing e2fsck -a  /dev/sda1
[    3.415578] dracut Warning: e2fsck returned with 8
[    3.417888] dracut Warning: /dev/sda1 is mounted.
[    3.418832] dracut Warning: *** An error occurred during the file system check.
[    3.419074] dracut Warning: *** Dropping you to a shell; the system will try
[    3.419272] dracut Warning: *** to mount the filesystem(s), when you leave the shell.
[    3.419703] dracut Warning: 
[   10.837580] dracut: Mounting UUID=6d078a3d-3a00-4cd9-849e-40a87cf5bf50
[   10.842531] dracut: mount: /dev/sda1 is already mounted or /sysroot busy
[   10.842838] dracut: /dev/sda1 is already mounted on /sysroot
[   10.929240] dracut: Checking ext4: /dev/sda5
[   10.929600] dracut: issuing e2fsck -a  /dev/sda5
[   11.096915] dracut: /usr: clean, 225799/788416 files, 1702953/3148732 blocks (check in 4 mounts)
[   11.103337] dracut: Mounting UUID=552d375e-becc-4968-8992-d3f2fe11b060
[   11.167939] EXT4-fs (sda5): mounted filesystem with ordered data mode. Opts: (null)
[   11.203102] dracut: Checking ext4: /dev/disk/by-uuid/552d375e-becc-4968-8992-d3f2fe11b060
[   11.203478] dracut: issuing e2fsck -a  /dev/disk/by-uuid/552d375e-becc-4968-8992-d3f2fe11b060
[   11.208735] dracut Warning: e2fsck returned with 8
[   11.210778] dracut Warning: /dev/disk/by-uuid/552d375e-becc-4968-8992-d3f2fe11b060 is mounted.
[   11.211747] dracut Warning: *** An error occurred during the file system check.
[   11.212058] dracut Warning: *** Dropping you to a shell; the system will try
[   11.212327] dracut Warning: *** to mount the filesystem(s), when you leave the shell.
[   11.212855] dracut Warning: 
[   16.024172] dracut: Mounting /usr
[   16.028450] dracut: mount: /dev/sda5 is already mounted or /sysroot/usr busy
[   16.028765] dracut: /dev/sda5 is already mounted on /sysroot/usr
[   16.204153] dracut: Switching root
[   16.573761] type=1404 audit(1339397889.459:2): enforcing=1 old_enforcing=0 auid=4294967295 ses=4294967
295
sda1 et sda5 sont les partitions / et /usr
/dev/sda1        6279640   2292716    3672052  39% /
/dev/sda5       12552548   7120756    4802048  60% /usr
résolu !! en faisant le post je me suis souvenu avoir créer un fstab.sys lors de mes précédents tests d'installation
en l'enlevant tout est ok