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From: George Hartzell <hartzell@cyrusharmon.com>
Date: Sun, 25 Mar 2007 18:06:27 -0700
To: Joe Kelsey <joe@zircon.seattle.wa.us>
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Cc: freebsd-stable@freebsd.org, Ivan Voras <ivoras@fer.hr>
Subject: Re: gmirror Issues
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On Mar 25, 2007, at 5:12 PM, Joe Kelsey wrote:

> Ivan Voras wrote:
>> Joe Kelsey wrote:
>>
>>
>>> So, after loading the mirror stuff, I regularly lock up the  
>>> system by
>>> trying to perform simple activities on the mirror.  What do I  
>>> need to do
>>> differently?
>>>
>>> Here are the relevant dmesg lines:
>>> atapci0: <SiI 3512 SATA150 controller> port
>>> 0xa000-0xa007,0x9800-0x9803,0x9400-0x9407,0x9000-0x9003,0x8800-0x880 
>>> f
>>> mem 0xfba00000-0xfba001ff irq 18 at device 13.0 on pci0
>>>
>>
>> I did almost the same thing you did with gmirror on 6.2-release on  
>> amd64
>> the other day and it worked. There were several complaints about  
>> "SiI"
>> hardware in the past, though - you might want to search the lists.
>>
>>
> Thank you for the suggestion, but it does not help.  There is some  
> traffic on the list about the 3112, but I have a 3512, which does  
> not have any list traffic about bugs.
>
> The major thing that needs doing is a detailed explanation of how  
> to take two brand new disk drives and mirror them.  Nothing in the  
> documentation discusses this.  Do you have to create file systems  
> on the drives first?  Do you have to use fdisk to slice them up?   
> Is there a size limit on drives?  I am trying to mirror two 400G  
> drives, is this supported?  There is no information anywhere that I  
> can find about these topics.

Have you seen this:

    http://people.freebsd.org/~rse/mirror/

g.