Date: Sat, 19 Feb 2005 00:46:25 -0700 From: Chad Leigh -- Shire.Net LLC <chad@shire.net> To: Sandy Rutherford <sandy@krvarr.bc.ca> Cc: Spades <spades@galaxynet.org> Subject: Re: raid1 Message-ID: <6463233752496ef9dc7301fd33c035c9@shire.net> In-Reply-To: <16918.60595.297759.953364@szamoca.krvarr.bc.ca> References: <421467C0.9060801@ant.uni-bremen.de> <d9175cad05021715128228c00@mail.gmail.com> <42159B2C.3000000@ant.uni-bremen.de> <200502181015.44103.karelj@kayjay.nl> <00b301c5164e$ae86b0d0$162dc2cb@astral> <5895876136a642eb60e73d6ebe87729c@shire.net> <16918.60595.297759.953364@szamoca.krvarr.bc.ca>
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On Feb 19, 2005, at 12:37 AM, Sandy Rutherford wrote: >>>>>> On Fri, 18 Feb 2005 23:51:53 -0700, >>>>>> "Chad Leigh -- Shire.Net LLC" <chad@shire.net> said: > >> On Feb 18, 2005, at 11:39 PM, Spades wrote: > >>> hi, my server hardware supports hardware raid, i installed it >>> as per normal freebsd 5.3, however i see no difference >>> in df. its using 2 x 160GB, what do i do during the installation >>> to enable the raid? >>> >>> mobo: >>> http://www.supermicro.com/products/motherboard/Xeon800/E7320/X6DVL- >>> EG.cfm >>> >>> -bash-2.05b$ df >>> Filesystem 1K-blocks Used Avail Capacity Mounted on >>> /dev/ad4s1a 66008394 35424 60692300 0% / >>> devfs 1 1 0 100% /dev >>> ... > >> What do you expect to see? > >> A raid1 is a mirror set and to the OS would probably look like a=20 >> single >> drive if it truly is a HW raid > > This should be true of any hardware RAID level, not just RAID1. The > HW RAID presents logical drives to the OS, which look like real drives > to it. The caveat is that the RAID driver will appear as the disk > type. I don't have any experience with SATA RAID, but on my server, > which has a Mylex ExtremeRAID 1100 SCSI RAID card, a df gives: > > Filesystem 1K-blocks Used Avail Capacity Mounted on > /dev/mlxd0s1a ... > /dev/mlxd0s1d ... > /dev/mlxd0s1h ... > /dev/mlxd0s1e ... > /dev/mlxd0s1f ... > /dev/mlxd0s1g ... > /dev/mlxd1s1e ... > /dev/mlxd1s1f ... > /dev/mlxd1s1g ... > /dev/mlxd2s1e ... > > mlx(4) is the driver for this card. The underlying hard drive > structure doesn't look anything like the above, but this is irrelevant > to the OS. > > Regarding your situation, I believe that your MB uses an Adaptec SATA > controller. You should find out exactly what the controller is and if > it is supported in "Hardware Notes". I would expect that if your > controller is supported and found, then "ad" should be replaced by the > relevant driver. Also, have a look at the dmesg output. There should > be some sign that the OS is recognizing your RAID controller. > According to the MB specs at the URL given by the OP, the SATA is an=20 Intel 6300ESB (part of a more general IO chip) " =95 6300ESB (Hance Rapids) SATA Controller (2x Drive = support) =95 2x SATA Ports =95 RAID 0, 1, JBOD support" I don't see any specific mention of this in any of the HW notes for=20 5.3. I would be interested to see the dmesg output at boot time to see=20= what the system sees for devices and controllers. If it is an ATA raid=20= (pseudo HW RAID) then it would show as arX devices and not adX=20 according to the handbook. Chad
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