Hey Neal,
I tried setting up a chroot jail (jail for short) this week. I run
Ubuntu gutsy (7.10), and had a similar problem. The only way to get
the file system mounted was to use loop instead of bind (or use
both). Also:
* I didn't have much luck with the third command up from the bottom,
chmod og-w -R /path to sage jail . Did this twice, and locked myself
out of everything on the system, not just the jail. Not sure why
(very careful typing the second time:) Third time around, I didn't use
it. Then, the rest below
* couldn't log into the jail as anything other than root
* when in the jail, switched user from root
* dchroot command depreciated, used schroot.
* couldn't run SAGE as anything other than root.
* couldn't get notebook to start in jail.
I was keeping a log of my particular install, but I never did get it
working! If you have better luck let me know! I've got a project
(over) due and the prof. wants to run the code on my machine; right
now, it's wide open :{
Crissy Ruffo
On Mar 22, 10:31 am, Neal Holtz <[EMAIL PROTECTED]> wrote:
> Well, talking to myself here, I was able to mount it using this
> incantation:
>
> [EMAIL PROTECTED]:/files# mount -t ext3 -o loop sage_chroot.image sage_chroot
> [EMAIL PROTECTED]:/files/sage_chroot# df -T
> Filesystem Type 1K-blocks Used Available Use% Mounted on
> ...
> /dev/sda3 reiserfs 99375008 63940492 35434516 65% /files
> ...
> /files/sage_chroot.image
> ext3 9842848 153192 9189656 2% /files/
> sage_chroot
>
> But that is quite different than the instructions, so I'm a little
> curious...
> but I think I'll just proceed ...
>
> On Mar 22, 11:18 am, Neal Holtz <[EMAIL PROTECTED]> wrote:
>
> > Hi,
>
> > I'm trying to build a chroot jail (on Ubunti feisty) using the
> > instructions in: http://www.sagemath.org/doc/html/inst/node10.html
>
> > I've created the image file and made a file system to here:
>
> > mke2fs -j sage_chroot.image
>
> > and no noticable errors
>
> > But I can't mount it. I've tried the following in /etc/fstab
>
> > /files/sage_chroot.image /sage_chroot ext3 bind 0 0
>
> > and several permuations, and I always get
>
> > "mount: Not a directory"
>
> > Due to space limitations, I'm not creating the image file on the
> > root partition, but on a mounted partition (which happens to be
> > a reiser fs). Here is the particulars of the most recent trial:
>
> > [EMAIL PROTECTED]:/files# df -T
> > Filesystem Type 1K-blocks Used Available Use% Mounted on
> > ...
> > /dev/sda3 reiserfs 99375008 63940492 35434516 65% /files
> > ...
> > [EMAIL PROTECTED]:/files# ls -l
> > total 10009793
> > ...
> > drwxr-xr-x 2 root root 48 2008-03-22 10:40 sage_chroot
> > -rw-r--r-- 1 root root 10240000000 2008-03-22 10:35
> > sage_chroot.image
> > ...
> > [EMAIL PROTECTED]:/files# mount -t ext3 --bind sage_chroot.image sage_chroot
> > mount: Not a directory
>
> > Grateful for any help.
> > Thanks
> > neal
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