From mboxrd@z Thu Jan  1 00:00:00 1970
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: RAID-6: help wanted
Date: Sun, 24 Oct 2004 00:17:50 -0700
Sender: linux-raid-owner@vger.kernel.org
Message-ID: <417B571E.4060406@zytor.com>
References: <cleqh6$ps4$1@terminus.zytor.com> <417B3CF9.7090107@wasp.net.au> <417B546C.3050706@zytor.com> <417B5529.2070709@zytor.com>
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To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Brad Campbell <brad@wasp.net.au>, linux-raid@vger.kernel.org
List-Id: linux-raid.ids

H. Peter Anvin wrote:
>>
>> It'll be about 40 minutes until it's uploaded, because of the 80 MB 
>> data file.
>>
>> This will create a RAID-6 volume on a loopback device, fail a unit, 
>> and then write a bunch of stuff, which will corrupt the filesystem.  
>> The corruption only happens when writing to a volume that is running 
>> in degraded mode; it seems to happen both with 1 and 2 disks missing.
>>

For all I know, too, the data file can be any large collection of 
small-to-medium size files (I think it currently contains a Linux kernel 
build tree), so downloading it all might not be necessary.

	-hpa