I'm going to try what you said.
First of all, I would know how to restore my previous settings.
You said to do chmod a+rw /dev/sda*. Ok, now I've changed permissions.
What can I do to return to my previous situation?
2006/11/10, Christopher Marshall <christopherlmarshall@...>:
> If you run uml from the root account, or if you chmod a+rw /dev/sda*, can you access the usb drive
> from within a uml instance?
No I can't. Either I do 'linux ubd0=rootfs.debian.etch
ubd1=swapfs.debian ubd2=/dev/hdc ubd3=/dev/sda
eth0=tuntap,,,192.168.1.101 mem=512M noprocmm' or 'linux
ubd0=rootfs.debian.etch ubd1=swapfs.debian ubd2=/dev/hdc
ubd3=/dev/sda1 eth0=tuntap,,,192.168.1.101 mem=512M noprocmm' .
Also, if I run UML with the last command, (with ubd3=/dev/sda1,
obviously is not correct) i get "Kernel panic - not syncing: Segfault
with no mm" ...
There was only one time I booted UML successifully with that option.
> If you can do that, your other problems are simple to solve.
> So, can you access the usb drive from within the uml instance?
> Chris Marshall
> --- Flavio <fbcyborg@...> wrote:
> > Ok, I tried to change permission level to 666 for /dev/sda and /dev/sda1, but
> > I can't mount (on my host system) my pen-drive unless I leave the
> > "user" word in the /etc/fstab file.
> > To make this mount attempt I modified my fstab as below (as regard /dev/sda1):
> > /dev/sda1 /mnt/pendrive auto rw,noauto
> > 0 0
> > I also added my user to disk group. I should be "mountable" because
> > # ls -l /dev/sda*
> > brw-rw-rw- 1 root disk 8, 0 Nov 10 00:42 /dev/sda
> > brw-rw-rw- 1 root disk 8, 1 Nov 10 00:42 /dev/sda1
> > As you see permission level is set to 666. My user belongs to disk group.
> > It maight be that disk group is useful to do something else... I don't
> > know to do what.
> > Now, I restored either /etc/fstab either permission level to 600 for /dev/sda*.
> > It seems both my ideas don't work.
> > Flavio.
> > 2006/11/10, Brock, Anthony - NET <Anthony.Brock@...>:
> > > > -----Original Message-----
> > > > If you agree with me, the other thing I can try, is to add every user
> > > > who needs to be able to read and write on a pen drive accessible by
> > > > /dev/sda1 to disk group. I don't know if it will works, but it's only
> > > > my idea.
> > >
> > > This depends on how and why you are using UML. In general, I run
> > > multiple servers on a single host that should NEVER have access to each
> > > other's drives. In light of this, I change the user ownership to the
> > > individual account that each guest instance runs under.
> > >
> > > However, your case may be different. If you are only running a single
> > > guest or if you don't care that a compromised guest might be able to
> > > read the confidential files of another virtual server (or possibly the
> > > host), then your solution should work. Does either of your suggestions
> > > solve you problem?
> > >
> > > Tony
> > >
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