Re: Boot s/390 Debian Linux off CD How are my DASD addressed
On Thursday 29 April 2004 23:18, Steven C Peckham wrote:
> I am VERY new to Linux, so this might seem silly, but we are in a shared
> DASD shop.
Right, shared DASD is pretty silly because of the inherent privilege
escalation (local root -> global root). If you want to use linux in
a production system, this should be changed, but it makes things easier
to do that first.
> and am VERY familiar with all of the MVS series operating systems, but do
> not know how the IOCP
> addressing translates to Linux addressing, and can NOT afford to just
> guess.
You can find a map of hardware device numbers to linux device nodes
in /proc/dasd/devices, which you can read e.g. with less or vi.
> The parmfile on the CD has just an "ro" in it, so Linux should be
> autodetecting the devices.
> I have a few thousand DASD units genned to the LPAR.
You can use the cio_ignore= or dasd= kernel parameters to restrict the
number of dasd available to linux. This will make it easier for you
and saves a lot of main storage, but won't help you on the security
side.
Arnd <><
Reply to: