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Re: [linux-lvm] Protection of used scsi disks by LVM



Hi Sergey.

> 
> Hello,
> 
> I have a question : 
> Why does LVM not protect the scsi devices which are used for volumes ?
> 

Because it can't.
The only way would be to remove then underlying devices from the genhd
in the kernel, which obviously is not a good idea(tm) ;-{)

> I can easily go to /dev/sda1 for example, and erase everything on it.

These are the UNIX/Linux semantics.

If one has the file/device special permission one can do every kind
of stupid things which come to ones mind.

> 
> Of course it is a stupid thing to do, but there is a minimal requirement on
> protection, isn't it ?
> 

Yes, you are right.
but IMHO there's no way today with the existing kernel implementation.

> I cannot think about the way to protect it, because LVM uses those disks as
> every other programs.
> 
> Any ideas ?
> 

Regards,
Heinz

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Systemmanagement TS                              T-Nova
                                                 Entwicklungszentrum Darmstadt
Heinz Mauelshagen                                Otto-Roehm-Strasse 71c
Senior Systems Engineer                          Postfach 10 05 41
                                                 64205 Darmstadt
mge EZ-Darmstadt Telekom de                      Germany
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