On Mon, Mar 01, 2004 at 05:06:04PM +0200, Yedidyah Bar-David wrote:
> On Mon, Mar 01, 2004 at 03:26:35PM +0200, Iftach Hyams wrote:
> > Question 1 :
> > ---------------
> > Having 3 iso files (Fedora) mounted (-o loop...), I would
> > like to have them all in one directory - each has Fedora/RPMS/
> > and the result should be one tree which symbolic link of all files
> > from 3 of them.
>
> What you want is called union-mount. Linux doesn't have that (yet?).
> I personally simply create a directory and manually (or with a script)
> create links to all the rpms. Something like:
> mkdir -p /isos/{cd1,cd2,cd3,allrpms}
> mount -o loop image1.iso /isos/cd1
> mount -o loop image2.iso /isos/cd2
> mount -o loop image3.iso /isos/cd3
> cd /isos/allrpms
> find .. -name "*.rpm" -type f -print | xargs -n 1 ln -s
Alternatively, you can build a symlinks directory manually. It would
help you if you need to preserve the original structure:
mount -o loop image1.iso /isos/cd1
mount -o loop image2.iso /isos/cd2
mount -o loop image3.iso /isos/cd3
cd /isos
mkdir all
cd all
ln -s ../cd1/* .
# now you see that under RedHat/RPMS you need to add files from a
# different CD.
# this removes the symlink:
rm RedHat
mkdir RedHat
cd RedHat
ln -s ../../cd1/RedHat/* .
rm RPMS
mkdir RPMS
cd RPMS
ln -s ../../../cd1/RedHat/RPMS/*.rpm .
ln -s ../../../cd2/RedHat/RPMS/*.rpm .
ln -s ../../../cd3/RedHat/RPMS/*.rpm .
If you want to make that availble to network clients, then there is the
question of protocol: apache and samba automatically dereference
symlinks. But if you serve the files by anonymous FTP you'll have to
make sure that the server root also includes the targets for those
direcctories (In this example: the directories cd1, cd2 and cd3).
If you use NFS: I'm not sure. Is the option 'nohide' in /etc/exports
intended for such cases?
--
Tzafrir Cohen +---------------------------+
http://www.technion.ac.il/~tzafrir/ |vim is a mutt's best friend|
mailto:[EMAIL PROTECTED] +---------------------------+
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