Hi Carsten,
Hm, but it works perfect - without having a /boot on a plain dasd or scsi-disk.
We boot from /dev/md0. ok, you can not make a "zipl" on a /dev/md0. but that's not
necessary. Just mount the dasd on a second linux and then use zipl to write the
boot-data.
I only created a special initrd. Made a "mkraid" with a new dasd and copy a
linux-installation on it. If you add a mirror to the system, you have to remember that
there is no boot-information on it. Ergo - before you able to boot from an new
mirror-device mount the dasd on a second system and do a "zipl". Sad, that zipl is not
able to see the ucb/dasd behind a md-device to write the boot-record.
Lufthansa Systems Infratec GmbH
Martin Lonkwitz Lufthansa Systems GmbH
UNIX Systems Engineer FRA AR/ISS
Systemplanung,-betrieb Am Weiher 24
und Entwicklung D-65451 Kelsterbach
Telefon:(069) 696-72456
Externer Servicepartner der Firma
networker, projektberatung GmbH
Am Kaltenborn 1
61462 K�nigstein
-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Carsten Otte
Sent: Freitag, 13. August 2004 10:21
To: [EMAIL PROTECTED]
Subject: Re: raid1
Hi Martin,
you cannot use a raid1 device for boot itself. The zipl bootloader requires either a
scsi disk or a dasd. With SLES this means, that you need to have a plain dasd mounted
on /boot in order to ipl.
For the root filesystem you can in fact use raid1 via the md driver or via the logical
volume manager. In case you are looking for full redundancy of storage devices, it
seems wise to create a second copy of the /boot filesystem, and run zipl on the second
ipl device as well. You will then be able to boot from either disk, but you need to
remember to re-do the procedure whenever you update your system kernel.
with kind regards
Carsten Otte
--
I saw screens of green, red messages too, then came blue, shubidu And i think to
myself, what a wonderful world
Lufthansa Systems Infratec ZLINUX SYSPROG <[EMAIL PROTECTED]> Sent by: Linux on 390
Port <[EMAIL PROTECTED]>
13/08/2004 08:01 AM
Please respond to Linux on 390 Port
To: [EMAIL PROTECTED]
cc:
Subject: raid1
Hi list !
Is anyone using raid1 as a boot-device under Suse SLES 8 or 9 ? if so, what's your
experience ?
cu
martin
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