Re: UnionMount status?

[Valerie Aurora <vaurora@redhat.com>]

On Wed, Aug 18, 2010 at 01:30:38PM +0200, Michal Suchanek wrote:
> On 17 August 2010 21:51, Valerie Aurora <vaurora@redhat.com> wrote:
> > On Tue, Aug 17, 2010 at 04:31:48PM +0200, Michal Suchanek wrote:
> >> On 17 August 2010 14:03, Michal Suchanek <hramrach@centrum.cz> wrote:
> >> > On 16 August 2010 20:52, Valerie Aurora <vaurora@redhat.com> wrote:
> >> >>
> >> >> Thanks for attaching your .config. ??CONFIG_UNION_MOUNT wasn't set:
> >> >>
> >> >> # CONFIG_UNION_MOUNT is not set
> >> >>
> >> >> Try rebuilding with that on. ??Yes, it should build without
> >> >> CONFIG_UNION_MOUNT and I'll test that for next release.
> >> >>
> >> >> -VAL
> >> >>
> >> >
> >> > Sorry, I thought I enabled it.
> >> >
> >> > Anyway, I changed that option in the config but it still does not build.
> >> >
> >>
> >> OK, a build without the ext2 filesystem works.
> >>
> >> Now when I try to mount the filesystem I get:
> >>
> >> ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ??(initramfs) mount_full -t tmpfs -o union tmpfs /root
> >> ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? [ ?? 43.403419] tmpfs: No value for mount option
> >> 'union'
> >> ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? mount: wrong fs type, bad option, bad superblock
> >> on tmpfs,
> >> ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ??missing codepage or helper program, or other error
> >> ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ??(for several filesystems (e.g. nfs, cifs) you might
> >> ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ??need a /sbin/mount.<type> helper program)
> >> ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ??In some cases useful info is found in syslog - try
> >> ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ??dmesg | tail ??or so
> >>
> >> I wonder if the docs are out of date. They suggest to only add -o union.
> >>
> >> I think it used to work, I recycled the scripts that produced the
> >> halfway-booting system last time.
> >
> > Hm, does mount_full call the new mount binary built from the union
> > mounts util-linux-ng git tree? ??You can find the git tree here:
> >
> > http://valerieaurora.org/union/
> >
> Yes, that's the problem. I installed a wrong package and the mount
> command did not get updated.
> 
> I copy it as moutn_full into initramfs because mount is normally
> something from klibc or busybox.
> 
> A dmesg can be found here:  http://paste.debian.net/84100
> 
> The system often boots but some features fail at random probably
> depending on the part of init which is affected by the unionmount
> failures.

Thanks a ton!  Al just told me to rewrite that part of the code
completely.  The good news is the new version will have fewer
pointers to be unexpectedly NULL. :)

-VAL