Mailinglist Archive: opensuse (818 mails)

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Re: [opensuse] Recover Linux Raid 0 with 2x2port 3Ware Raid 1 cards
  • From: "LLLActive@xxxxxxx" <LLLActive@xxxxxxx>
  • Date: Mon, 05 Sep 2011 01:19:59 +0200
  • Message-id: <4E64079F.7010404@GMX.Net>
On 9/1/11 4:21 AM, Joaquin Sosa wrote:
Boot openSUSE 11.4 GNOME live CD and disk utility should see the RAID
array and have the ability to start the RAID and mount the resulting
volume.

Why such the odd arrangement? It would be less headache to use RAID
0+1 native to your RAID card.
It is a 2-Port card, i.e. only Raid 0 or 1.
The issue is your hardware RAID cards
are worthless in your configuration. Say you used desktop-grade
hardware in your system and it develops bad RAM,
it the MD-RAID driver
will write the corrupt data to the array.
... ok, but how will bad ram not do the same to any other set-up?

I was a bit nervous about the SW-Raid. With HW-Raid, you open the 3Ware Bios, rebuild and start the OS. Painless.

I have not used SW-Raids before. Today I succeeded in recovering the SW-Raid stripe. In YaST -> Services -> Partitioner I just redefined the two HW-Mirrors as a Raid 0, without any formatting or mount-point. When I first looked in the FS with Gnome and KDE Data Managers, there was nothing on the /home/Data volume when I mounted it. On Gnome Nautilus there was a new entry on the left of an unmounted Volume, named exactly as I named it in the previous installation; I felt a heartbeat skip. It wanted some authorisation before it could mount it. It failed, because I used the original root password, which it did not recognise. I went to the CLI Terminal and su -, then looked, and it was all there, I made another full backup to a USB HD, just in case. Now I can try some alternatives. Phew.... I was relieved. It seems the SW-Raid also has the raid info on the disks.


Al
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