[Pkg-ltsp-devel] Bug#418144: ltspfs: CD does not mount

[vagrant at freegeek.org]

On Mon, Apr 09, 2007 at 01:44:29PM +0530, Joshua N Pritikin wrote:
> On Sat, Apr 07, 2007 at 10:51:53AM -0700, vagrant at freegeek.org wrote:
> > > I insert a CD on the client. I see it appear in /etc/fstab. 
...snip...
> Ah ha! cdpinger is crashing because lsof is not installed. After 
> installing lsof, CD-ROMs are working. 

yes, this is already reported as: http://bugs.debian.org/410661

sorry we have no uploaded a fixed package sooner.

> Why is the symlink created under /media? Is this yet another arbitrary
> LTSP 4.2 incompatibility? Can we get a link under $HOME/Drives/ as
> well?

quite possibly. please document further incompatibilities at:

http://wiki.debian.org/LTSP/Upgrading_4.2

we will include them in the package documentation in future uploads.

> After ejecting the CD, I am getting "VFS: busy inodes on changed media." 
> on the client and /dev/cdrom is still mounted (after removing the disc 
> from the caddie!). I tried ejecting again. It refuses to unmount 
> cleanly. I suspect that I can use lsof to diagnose the problem but I 
> don't know the magic options. I can mount another CD and it seems to 
> work. In other words, the faulty unmounting does not seem to affect 
> subsequent mount requests. Now the VFS message stopped appearing. 
> Perhaps it is nothing to worry about?

it seems to me a separate issue from this bug report, please file a
separate bug report if you feel it's needed.
 
> Nothing happens when I inserting a floppy. If I mount the floppy by 
> hand:
> 
>   mount -t vfat /dev/fd0 /var/run/drives/floppy0
> 
> I see udevmonitor messages "mount@/block/fd0" but /etc/fstab is not 
> updated (on the client) and nothing appears on the server.

does it work properly without manual intervention if you make the
changes noted in:

http://bugs.debian.org/416673  

> > > However, I don't see anything mounted to my home directory. 
> > 
> > in a working ltspfs environment, a directory should appear in
> > /media/USERNAME/ on the server, with the files from the device.
> 
> OK, that's another point for the LTSP 4.2 migration guide.

noted on the Upgrading_4.2 wiki page.
 
> > > It seems like ltspfs is missing some installation step? What steps
> > > should I follow to track down the problem?
> > 
> > is the user in the "fuse" group?
> > 
> > is the fuse module loaded on the server?
> 
> Yes, I have LTSP 4.2 running as well. LTSP 4.2 uses fuse and it works.
> 
> > are you logging in using LDM?
> 
> Yes.
> 
> > do you have LOCALDEV=true (or y or yes, upper or lowercase) set in
> > lts.conf?
> 
> Yes, I see ltspfsd running on the client in ps -Af listing.

> > do devices other than CD work?
> > 
> > is ltspfsd installed in the LTSP chroot:
> > 
> > dpkg --root=/opt/ltsp/i386 -l ltspfsd
> 
> It's running therefore it is installed.

it's been a while since i've personally tested ltspfs, that's all i can
remember.
 
> > here's some documentation from debian-edu, though not all of it will
> > apply to a generic debian environment:
> > 
> > http://wiki.debian.org/DebianEdu/HowTo/LocalDeviceLtspfs
> 
> That's just a HOWTO, not a troubleshooting guide.

sorry for the totally useless information, then :P

> > i'm not sure, but this may also be related to:
> > 
> > http://bugs.debian.org/416673 
> 
> Hrm, I made the changes suggested in 416673. I did not test whether the 
> CD-ROM was not working without the changes. Do you want me to try it?

i think lsof is needed in either case. testing if this works with the
changes reported in #416673 would be useful, yes, please do so (both for
CDROM and floppy).

thanks for trying this out. the shift from ltsp 4.2 to ltsp5 involved
some major design changes, and still needs some bugs shaken out.

live well,
  vagrant