Date: Wed, 18 Jul 2007 07:47:50 +0200 From: Michael Worobcuk <mail@michaelworobcuk.de> To: Tom Judge <tom@tomjudge.com> Cc: freebsd-stable@freebsd.org Subject: Re: Dell PERC5/i SAS5/5IR - RAID monitoring Message-ID: <2F1F8117-86EF-49B4-AB4E-8A656727570A@michaelworobcuk.de> In-Reply-To: <469D5061.8060306@tomjudge.com> References: <4CC93356-890C-43DF-A905-0B9ABC990223@michaelworobcuk.de> <469D5061.8060306@tomjudge.com>
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Am 18.07.2007 um 01:27 schrieb Tom Judge: > Michael Worobcuk wrote: >> Hi, >> I am trying to set up my first webserver. I bought a Dell >> Poweredge 860, provided with a SAS5/IR RAID-Controller. >> The problem is now, that I cannot find software, that monitors the >> state of my disks. I already tried megarc from the ports but all I >> get is a short answer that no adapters where found: >> ##################################################################### >> #### >> megarc -AllAdpInfo -nolog >> >> ********************************************************************* >> * >> 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 >> ##################################################################### >> #### >> I had emails with Dell and LSI. Dell does not support FreeBSD and >> LSI says I should go and ask Dell ... >> The second thing is, the perfomance. > > <<<<SNIP>>>> > >> Final score for writes: 16 >> Final score for reads : 2025 >> >> ##################################################################### >> #### >> (Just to remember: Pentium D; 2,8GHZ; 4 GB RAM; 2 x 500GB SATA RAID1) >> That is pretty poor, isn't it ? >> I am wondering now, if somebody has experience with the PERC5/I >> Controller. Would it be possible to monitor the disks, if I would >> buy that controller ? >> Any hints are highly appreciated. >> Thanks >> Michael > > > I don't know about monitoring the SAS5/I however I read some posts > on one of the lists that was talking about the linux compatibility > system providing all of the correct interface for the linux version > of ?megacli? to work on FreeBSD. As the SAS5/I is mpt driver based > could it not be checked with camcontrol? (Just an idea never tested). > > As for performance issues with the SAS5/i, there is a problem in > the controller. A work arround was created by Scott Long which > created a sysctl that could be set to cause the controller to turn > on the on drive write cache's. These changes where commited to > RELENG_6 on 2007-06-05 21:32:57 UTC. > > The PERC5/[ei] controllers do not suffer the performance problems > of the SAS5/i controller, we have ~30 systems with these > controllers and have never seen any performance problems with them > even when they have 20 drives attached to them. Hi Tom, thank you for your response. What about monitoring the PERC5/ie ? Does it work with megarc or any program under FreeBSD ?
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