Looks like the mount(8) double /etc/mtab lock deadlock bug mentioned at
https://qa.mandriva.com/show_bug.cgi?id=48674#c12
Check /proc/locks. /bin/mount is hanging.
Szaka
On Mon, 23 Mar 2009, Pascal Terjan wrote:
> Szabolcs Szakacsits <sz...@...> writes:
>
> > On Thu, 19 Mar 2009, Frederik Himpe wrote:
> > > On Thu, 19 Mar 2009 19:12:53 +0200, Szabolcs Szakacsits wrote:
> > > > On Thu, 19 Mar 2009, Frederik Himpe wrote:
> > > >
> > > >> On Mandriva's bugzilla, there are lots of reports [1] about the system
> > > >> starting to hang during mounting of the NTFS partitions with ntfs-3g.
> > > >> The system continues to boot when pressing Ctrl-C. This seems to happen
> > > >> especially at the first boot after installation, which makes me think
> > > >> that this could be caused by the recover option now in ntfs-3g
> > > >> (ntfsresize probably marked the ntfs file system as dirty during
> > > >> installation).
> > > >
> > > > Ntfs-3g triggers a recently introduced bug in mount(8) which can cause
> > > > mount to hang. 'strace -f' will confirm it. Fix must be already
> > > > available for mount(8).
> > >
> > > Do you know where this fix can be found?
> >
> > I suppose in the latest package or git which contains the mount(8)
> > utility the problematic Mandriva distribution version uses.
>
> I can't any fix in util-linux-ng git that may look related
>
> BTW fedora has the same issue
> https://bugzilla.redhat.com/show_bug.cgi?id=486619
>
> I could manage to get a shell on such box, after it hanged
> gdb and strace can't give any info
>
> # dmesg | grep fuse
> fuse init (API version 7.11)
>
> # uname -a
> Linux localhost 2.6.29-desktop-0.rc8.3.1mnb #1 SMP Wed Mar 18 14:28:50 BRT
> 2009
> i686 Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz GNU/Linux
>
> root 1582 0.0 0.0 3104 652 ? S 17:21 0:00 /bin/mount -i
> -f -t fuseblk -o rw,allow_other,blksize=4096 /dev/sda1 /mnt/windows
> root 2595 0.0 0.0 3104 808 ? S 17:22 0:00 mount -a -t
> nonfs,nfs4,smbfs,cifs,ncpfs,gfs -O noencrypted
>
> # gdb mount -p 1582
> GNU gdb 6.8-5mdv2009.1 (Mandriva Linux release 2009.1)
> Copyright (C) 2008 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "i586-mandriva-linux-gnu"...
> Attaching to program: /bin/mount, process 1582
>
> and stops there, have to be killed -9
>
> # cat /proc/1582/wchan
> fuse_get_req
>
> After kill -9 1582 mount worked fine
>
> I don't know if this is related to 2.6.29 or ntfs-3g 2009.2.1 and can't easily
> test as it's very hard to reproduce
>
>
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