From: "Clemens Eisserer" <linuxhippy@web.de>
To: linux-raid@vger.kernel.org
Subject: Autodetection using RAID1 on externa USB2-HDs
Date: Wed, 16 Feb 2005 07:54:26 +0100 [thread overview]
Message-ID: <1061567322@web.de> (raw)
Hello!
I am trying to use my external USB2.0 hd for raid1 in my laptop, however autodetection does not work and I do not really know - but I have at least a theory.
What i did till now:
1.) set the partition-type of both partitiuons from 83 (Linux) to fd (Linux Raid Autodetection)
2.) mdadm --create /dev/md0 --level=raid1 --reaid-devices=2 /dev/hda2 /dev/sda1
This works great on creation, I can watch with /proc/mdstat the syncing process, but if I reboot the autodetection does not work. I can see that linux-raid discovers an raid (on /dev/hda2) but something returns "-22" (have forgotten what exactly) - it seems that my usb-disc (/dev/sda1) is simply not known at raid-discovery-time.
Some seconds later I can see that the kernel disvcovers my usb-drive - so I think my theory could be right?
Is there a way to tell the kernel after boot where to find raid-arrays and howto handle them. Is that maybe possible with only a /boot partition and the reast on a mirrored "/" (root) partition.
Please help, I don't know any further :(
lg Clemens Eisserer
__________________________________________________________
Mit WEB.DE FreePhone mit hoechster Qualitaet ab 0 Ct./Min.
weltweit telefonieren! http://freephone.web.de/?mc=021201
next reply other threads:[~2005-02-16 6:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-16 6:54 Clemens Eisserer [this message]
2005-02-16 7:14 ` Autodetection using RAID1 on externa USB2-HDs Daniel Pittman
2005-02-16 7:20 ` GrantC
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1061567322@web.de \
--to=linuxhippy@web.de \
--cc=linux-raid@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).