Hello everybody,
first thank you for you help-mails. I started
the whole workaround once again beginning
with the SUSE-Installation. The Raid Kernel
Support is already included (2.2.14). Not so
the auto-raid detection (to be added by
the RAID-Patch).
Different ways to patch this new funktion with:
- raid0145-19990824-2.2.11 (from linuxdoc.org...daemons)
- raid-2.2.14-B1 (from Redhat FTP)
- raid-2.2.16-A0 (from Redhat FTP, with Kernel 2.2.16)
ended with an error when I tried to build the bzImage.
Nevertheless I had the Raid-Kernel and a clean installation.
The RAID-Tools (0.90 from 08/24/99) are part of SUSE6.4.
I built two partitions (efs2):
/dev/hda4 (4. primary partition on the Linux OS disk)
/dev/hdc1 (1. pr. part. on the second disk)
both with about 6.3 GB
I set up the Raidtab:
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 4
persistent-superblock 1
device /dev/hda4
raid-disk 0
device /dev/hdc1
raid-disk 1
and started:
mkraid /dev/md0
this is what the HOWTO said if I understand it
properly and this time I got:
handling MD device /dev/md0
analyzing superblock:
disk0: /dev/hda4, raid superblock at 6361664kB
disk1: /dev/hdc1, raid superblock at 6451584kB
mkraid: aborted, see the syslog or /proc/mdstat for potential clues.
But there is no clue, it never showed any entries with any problem.
Did I forget something essential, again?
Horst
P.S.: If this works I try your workaround, Phil ;-)
----------------------------------------------------------------------------
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-----Ursprüngliche Nachricht-----
Von: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]Im Auftrag von
[EMAIL PROTECTED]
Gesendet am: Mittwoch, 12. Juli 2000 20:25
An: Ilia Baldine; [EMAIL PROTECTED]
Betreff: Re: AW: /dev/hda1 mounted
It's actually not too bad:
* Create the md* devices, and make them 'active' (with at least the
root device being raid-1)
* mke2fs them (with proper raid options, if nessesary)
* cp -a all the junk from the regular partition(s) to the md(s)
* Fix /etc/fstab on the root md device to reflect the changes.
* make a boot floppy, and set it's root to the proper md device which
has your root.
* then configure/run lilo, and reboot w/o the boot floppy.
The catch to this is that you aren't reusing the/those original
partitions which the installation was initially on. You might be able
to do some trickery to create a degraded raid which automatically
re-syncs and includes them in the raid after you boot from the raid,
but I haven't do this. You could also make them into a raid (like for
/tmp or something) after the fact, too. But, on the other hand, it's
sometimes nice to have some 'regular' paritions from which a normal
system can boot from in cause all hell breaks loose. (Which happens
too often. ;')
I guess to make a long email short, the answer is that you can simply
use 'cp -a ...' to copy everything from an existing distro w/o needing
to install a new distro directly onto the raid.
Phil
On Wed, Jul 12, 2000 at 01:54:28PM -0400, Ilia Baldine wrote:
> I think you want to have / on RAID. In the HOWTO
> they discuss putting / on RAID - it is a somwehat
> involved procedure. Easiest if it is done at install time.
> RedHat actually offers that option at install, i
> don't know about SuSe ( i have a suse box at
> home but I don't run raid on it).
>
> I think it is easiest to put / on a RAID5 partition if
> your system is already installed (by marking the
> existing / partition as failed in raid, copying everything
> from / to the md partition and then readding the
> old / disk back). You need to have a spare disk to
> do it though. Read the HOWTO for details.
>
> -ilia
>
>
> Johnny wrote:
>
> > Yes, now I know that means. But now I ask me where
> > I can install Linux itself, because it contains the
> > data I want to mirror. In Windows NT I have first
> > have the data with the operating system and then
> > simply add a disk on which the whole thing is mirrored.
> > Where is my OS? I use a small boot partition and an
> > 2 GB "/" partition, the "/" should be mirrored. Isn't
> > that possible.
> > HZ
> >
> > -----Ursprüngliche Nachricht-----
> > Von: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]]Im Auftrag von Henry J. Cobb
> > Gesendet am: Mittwoch, 12. Juli 2000 18:42
> > An: [EMAIL PROTECTED]
> > Betreff: Re: /dev/hda1 mounted
> >
> > If I understand correctly, you're attempting to simply add additional
> > drives to your existing non-RAID boot partition, instead of creating a
RAID
> > setup on additional not yet formatted partitions, no?
> >
> > -HJC
>
> --
> -------------------------------------+----------------------
> Ilia Baldine | [EMAIL PROTECTED]
> Network Research Engineer, | ph#:(919)248-1847
> Advanced Networking Research, MCNC | FAX:(919)248-1455
> -------------------------------------+----------------------
> "I used to think the brain was the most important part
> of the body, but then I realized who was telling me that."
> -Emo Philips
> ------------------------------------------------------------
>
>
--
Philip Edelbrock -- IS Manager -- Edge Design, Corvallis, OR
[EMAIL PROTECTED] -- http://www.netroedge.com/~phil
PGP F16: 01 D2 FD 01 B5 46 F4 F0 3A 8B 9D 7E 14 7F FB 7A
