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Date:      Mon, 02 Jun 2008 21:59:49 +0100
From:      Vince Hoffman <jhary@unsane.co.uk>
To:        kalin m <kalin@el.net>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: mfi freebsd7
Message-ID:  <48445F45.70604@unsane.co.uk>
In-Reply-To: <484441D8.8050207@el.net>
References:  <4844293F.7020507@el.net> <484438B1.5020202@unsane.co.uk> <484441D8.8050207@el.net>

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kalin m wrote:
> megarc, right... read about it..  here:
> 
> # megarc -AllAdpInfo help
> usage :
>     cmd -AllAdpInfo
>       : prints info of all cards
> 
> 
> .....  ok .....
> 
> # megarc -AllAdpInfo
> 
>    **********************************************************************
>          MEGARC MegaRAID Configuration 
> Utility(FreeBSD)-1.04(03-02-2005)             By LSI Logic Corp.,USA
>    **********************************************************************
>      [Note: For SATA-2, 4 and 6 channel controllers, please specify
>      Ch=0 Id=0..15 for specifying physical drive(Ch=channel, Id=Target)]
> 
>    Type ? as command line arg for help
> 
>    No Adapters Found  
>    Error: No MegaRaid Found
> 
> 
> ?!?!?!  does that mean that there is no raid?  why then the df output? 
> the machine is supposed to have 4 250gig SAS drives.
> 

Its more likely that megarc doesnt support the newer controllers which 
is a shame. you might have more luck with sysutils/linux-megacli since 
that explicitly mentions LSI MegaRAID SAS, I wish they would make the 
util open source though. Will mean you need the linux-base port 
installed and linux.ko loaded.

A RAID1 config shoudl suit a busy webserver well.

Vicne



> 
> thanks...
> 
> 
> 
> 
> 
> Vince Hoffman wrote:
>> kalin m wrote:
>>> hi all...
>>>
>>> a hosting facility build a new dedicated server for me and looking at 
>>> the dmesg i see:
>>>
>>> mfi0: <LSI MegaSAS 1078> port 0xec00-0xecff mem 
>>> 0xfc480000-0xfc4bffff,0xfc440000-0xfc47ffff irq 16 at device 0.0 on pci1
>>> mfi0: Megaraid SAS driver Ver 2.00
>>>
>>> for df i get:
>>> Filesystem       Size    Used   Avail Capacity  Mounted on
>>> /dev/mfid0s1a    496M    197M    259M    43%    /
>>> devfs            1.0K    1.0K      0B   100%    /dev
>>> /dev/mfid0s1e    496M     12K    456M     0%    /tmp
>>> /dev/mfid0s1f    661G    636M    608G     0%    /usr
>>> /dev/mfid0s1d    8.7G    1.4M    8.0G     0%    /var
>>>
>>>
>>> i asked for raid1. i cant find too much information about the mfi 
>>> driver. just that it works with freebsd 7.
>>>
>>
>> you might want to look at sysutils/megarc and possibly 
>> sysutils/linux-megamgr so you can more closely monitor/investigate 
>> your array.
>>
>> Vince
>>
>>> i'll keep looking but - has anybody successfully deployed production 
>>> servers using the LSI MegaSAS 1078 in RAID1 on a very busy web server?
>>> is there any loss in performance using that hardware in RAID1?
>>> any performance loss in RAID1 at all?
>>>
>>>
>>> thanks...
>>>
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>>
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