mountall causes boot-up to hang on unknown fstab entry

[WhyteHorse]

Binary package hint: mountall

I can't tell if this is the same as the other bugs so please mark as duplicate if necessary. After upgrading from 9.10Stable to 10.04beta1, the system reboots and comes to a complete halt with an error from mountall about an entry in the fstab. The entry has been lost due to recovering the system but I recall it was some kind of usb filesystem, possibly something to do with my laptop's card-reader.

I had to press CTRL-ALT-DEL to reboot, go into a recovery disk, and remove the offending line in order to get the system to boot. Mountall should just discard any entries it doesn't understand and allow boot to resume or offer the user a shell. I tried CTRL-C and CTRL-K but it wouldn't respond.

ProblemType: Bug
Architecture: i386
Date: Sun Mar 21 15:42:12 2010
DistroRelease: Ubuntu 10.04
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
Package: mountall 2.8
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
SourcePackage: mountall
Uname: Linux 2.6.32-16-generic i686

[jferguson (jferg977)]

the vagrant line in fstab was for a usbfs. To wit: "usbfs /proc/bus/usb usbfs auto"

I commented it out and now system no longer hangs on boot and (so far) everything seems to be working.

[DouglasPhillips (doug-sbscomp)]

Further information on a fresh upgrade last night from Karmic => Lucid Beta 2:

/etc/fstab line:
## usbfs is the USB group in fstab file:
none /proc/bus/usb usbfs devgid=124,devmode=664 0 0

No message to the screen, just after mounting all my other partitions, the system just sits there.

Using Alt+SysRq+K dumps to a maintenance shell. Further running "mountall" will spew a bunch of messages about /proc/bus/usb (I'll try to copy down the messages), then proceeds with the boot, starting GDM.

Commenting out the line above in /etc/fstab fixes the problem.

[Scott James Remnant (Canonical) (canonical-scott)]

Do you see the Plymouth splash screen?
Could you supply the output of "ls -l /lib/plymouth/themes"

Also could you modify /etc/init/mountall.conf - add "--debug" to the end of the exec line, then after booting attach /var/log/boot.log
(with the usbfs entry in, obviously)