Trouble reading data CD under Qubes

[Pawel Debski]

Folks,

I have a PC with two SATA controllers: primary master holds my SDD with Qubes, while secondary master has CD drive attached.

When I insert a data CD it gets mounted by dom0 and the files are accessible. I do not want to open these files in dom0 however. So in the VM Manager I right click my favourite perssonal-full-sw appVM that I created previously and select:

Attach/detach block devices -> Attach dom0:sr0

and nothing happens.

Even more: CD content is still visible in dom0 and /dev/sr0 is still mounted in /run/media/pdebski/CDTITLE

How can I better diagnose the problem?

[Grzesiek Chodzicki]

Try using qvm-block -l and then attach the device using qvm-block. If that fails, you can attach the entire sata controller (and not just the drive)

[Pawel Debski]

Here is the progress:

(in dom0)
qvm-block -l
dom0:sr0 ... attached to fedora-full-sw as xvdi

now in fedora-full-sw Konsole I need

[user@fedora-usb ~]$ su - root
[root@fedora-usb ~]# mkdir CD
[root@fedora-usb ~]# mount /dev/xvdi CD
[root@fedora-usb ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
...
/dev/xvdi 8038 8038 0 100% /root/CD

and voilà, I can read the files.

HOWEVER: can you imagine a normal user doing this?
(I can't, she/he would kill me with his laughter ;-)

How can I make Fedora read the CD and mount it automagically so all is visible in AppVM File Manager just after inserting CD?

[Grzesiek Chodzicki]

The easiest (although not really obvious) way would be to attach the entire SATA controller to the VM. Works for USB, should work for SATA too.

[raah...@gmail.com]

cdroms are pretty outdated now. I don't even have one on my latest box.

[Marek Marczykowski-Górecki]

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I think the problem is you have it mounted in dom0. If unmount it there,
it should just work.

- --
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
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[Pawel Debski]

How do I check whether it is really mounted in dom0?
(I think it is not, but maybe I'm doing something wrong)

[raah...@gmail.com]

notification bubble should pop up on the screen. I think its usually sr0 or something.

[Pawel Debski]

How do I check whether it is really mounted in dom0?
(I think it is not, but maybe I'm doing something wrong

notification bubble should pop up on the screen.  I think its usually sr0 or something. 

What would be the right command in Konsole?

Z powazaniem / Best Regards
Mit freundlichen Gruessen / Meilleures salutations
Pawel Debski

[raah...@gmail.com]

hmm fdisk? blkid?

[Unman]

Or the obvious:
mount -l
findmnt

[Ángel]

Pawel Debski wrote:
>
> > How do I check whether it is really mounted in dom0?
> > (I think it is not, but maybe I'm doing something wrong
> notification bubble should pop up on the screen. I think its usually sr0 or something.
>
> What would be the right command in Konsole?
>

Try doing:
mount | grep ^/dev/sr

but if the files are available at /run/media/pdebski/CDTITLE, it is
clearly mounted.

In order to unmount it, you can do
umount /run/media/pdebski/CDTITLE

and then proceed to attach dom:sr0 to your favourite AppVM