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Message-ID: <43CE7DF7.3010201@schembach.de>
Date: Wed, 18 Jan 2006 18:42:15 +0100
From: Oliver Schembach <oliver@schembach.de>
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Subject: Re: [linux-lvm] Recovering LVM configuration on crashed RAID partition
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Karl O. Pinc schrieb:
>
> On 01/18/2006 08:13:12 AM, Oliver Schembach wrote:
>> Hi,
>>
>> I'm running 4 IDE disks in my home server using software raid with 
>> the following partition layout:
>>
>> hd[abcd]1   /boot (RAID 1)
>> hd[abcd]2   swap (RAID 5)
>
> I don't know what I'm doing with LVM so can't help, but I can
> say that you don't want to run swap on raid5.  Probably you
> want to run it on raid0, perhaps raid 1 if you've hot-swappable
> drives and want to maximize uptime.
>
> Karl <kop@meme.com>
> Free Software:  "You don't pay back, you pay forward."
>                  -- Robert A. Heinlein
>
>
>
Thanks for your recommendation regarding RAID 5 on swap partitions. 
There's not so much swapping on my machine, so I didn't really notice 
the drawbacks resulting from the CPU XORing for the raid 5 algarithm.  
My idea really was to avoid  the machine going down in case of a disk 
crash in the raid array.
But you are right, I will change the swap partition to RAID 1 (...if I 
ever will get back my data from my LVM partition...)

Regards,
    Oliver