On Wed, Mar 31, 2004 at 07:54:19AM +0200, Arnd Vehling wrote: > does anyone know how to fix the device name on a debian linux > system? For example. If i have two IDE hardisks, the devices will > be named like this. > > /dev/hda > /dev/hdb > > If i now must remove the first harddisk (/dev/hda) the second (/dev/hdb) > will be renamed to (/dev/hda) after the reboot. As i want /dev/hdb to be > a mirror of /dev/hda and used as failover disk _without_ opening the > case and tampering with the IDE bus setup, i want linux to keep the name > /dev/hdb for the drive no matter what happens.
huh? that's EXACTLY what linux does for IDE drives. the slave drive on the primary IDE controller will *always* be /dev/hdb, regardless of whether there is a master drive or not. /dev/hda - master drive on primary IDE controller /dev/hdb - slave drive on primary IDE controller /dev/hdc - master drive on secondary IDE controller /dev/hdd - slave drive on secondary IDE controller > Is this possible? it's standard. > Another question. How can i copy two identical discs _including_ the boot > block? "dd if=/dev/hda of=/dev/hdb" doesnt do it don't use dd for that. set up a raid-1 mirror instead. it's easy to do, only about 5 minutes work. also, for performance and safety, put your second drive on a separate IDE controller. that way it will still work even if one IDE controller fails. e.g. have /dev/hda (primary IDE master) and /dev/hdc (secondary IDE master) rather than /dev/hda & /dev/hdb. > and there are no raw devices on linux AFAIK. /dev/hd? ARE the raw devices. craig -- craig sanders <[EMAIL PROTECTED]> The next time you vote, remember that "Regime change begins at home" -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]