[rhn-users] Raid repair

[Jon Branch]

Hi Lonnie

Hope it works for you. Glad to be of some small help. I've received lots of good help from the folks in this group.

Regards

Jon Branch
----- Original Message -----
From: "LONNIE TROTTER" <ltrotter at ajusd.org>
Date: Sat, 3 Apr 2004 16:47:45 -0700
To: Red Hat Network Users List <rhn-users at redhat.com>
Subject: Re: [rhn-users] Raid repair

> Jon, I have not used this tool before. I took a quick look and the 
> possibility of using this may have been the answer I was searching for. I 
> want to thank you for your insight to my problem. 
> 
> 
> . On Sat, 03 Apr 2004 08:49:11 +0800, Jon Branch wrote
> > Hi Lonnie
> > 
> > Instead of using raidtools could you have tried using mdadm to force your 
> raid 5 to start?
> > 
> > mdadm is documented in "Managing RAID on Linux" by Derek Vadala from 
> O'Reilly.
> > 
> > Regards
> > 
> > Jon Branch
> > IT Coordinator
> > Christian Alliance International School - Hong Kong
> > 
> > ----- Original Message -----
> > From: "LONNIE TROTTER" <ltrotter at ajusd.org>
> > Date: Tue, 30 Mar 2004 10:17:22 -0700
> > To: rhn-users at redhat.com
> > Subject: [rhn-users] Raid repair
> > 
> > > Has anyone experienced this. 
> > > 
> > >    We had a server setup with physical space for six scsi hard drives. 
> > > The first three were constructed as a RAID1 array while the last three 
> > > were constructed as a RAID5 array. One of the drives in the RAID5 array 
> > > failed and was not repairable. The failed drive was removed and a 
> > > replacement drive put in its place, we booted into linux rescue and 
> > > fdsik'd the drive creating a partition table exactly the same as the 
> > > drive that had failed. Went to boot back in to Enterprise to raidhotadd 
> > > the replacement harddrive to the RAID5 array, but enterprise would not 
> > > let us do that. The RAID5 array would not start because there were only 
> > > two drives available, if the broken drive was placed back in the raid 
> > > would come up in degraded mode. The problem here is that we had no 
> > > physical space to have both the failed drive and the replacement drive 
> in 
> > > at the same time. This meant that the raid would not start, preventing 
> us 
> > > from raidhotadding the replacement drive. As a result we copied the data 
> > > off of the raid while it was in degraded mode, put the replacement drive 
> > > in and rebuilt the raid array, then copied the data back onto it. This 
> > > was quite time consuming as the data we were moving around was around 25 
> > > gigabytes. 
> > > 
> > > Lonnie Trotter
> > > Network Administrator
> > > Apache Junction Unified School District
> > > Phone: 480-982-1110 Ext. 2050
> > > 
> > > 
> > > _______________________________________________
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> > > rhn-users at redhat.com
> > > https://www.redhat.com/mailman/listinfo/rhn-users
> > >
> > 
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> 
> 
> Lonnie Trotter
> Network Administrator
> Apache Junction Unified School District
> Phone: 480-982-1110 Ext. 2050
> 
> 
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