Date: Sun, 20 Feb 2005 11:39:10 +1000 From: "Spades" <spades@galaxynet.org> To: "Chad Leigh -- Shire.Net LLC" <chad@shire.net>, "Sandy Rutherford" <sandy@krvarr.bc.ca> Cc: freebsd-questions@freebsd.org Subject: Re: raid1 Message-ID: <008201c516f4$d9e78ff0$0a01a8c0@astral> References: <421467C0.9060801@ant.uni-bremen.de><d9175cad05021715128228c00@mail.gmail.com><42159B2C.3000000@ant.uni-bremen.de> <200502181015.44103.karelj@kayjay.nl><00b301c5164e$ae86b0d0$162dc2cb@astral><5895876136a642eb60e73d6ebe87729c@shire.net><16918.60595.297759.953364@szamoca.krvarr.bc.ca> <6463233752496ef9dc7301fd33c035c9@shire.net>
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How do we check if FreeBSD recorgnises it as individual drives or Hardware RAID array. ----- Original Message ----- From: "Chad Leigh -- Shire.Net LLC" <chad@shire.net> To: "Sandy Rutherford" <sandy@krvarr.bc.ca> Cc: <freebsd-questions@freebsd.org>; "Spades" <spades@galaxynet.org> Sent: Saturday, February 19, 2005 5:46 PM Subject: Re: raid1 On Feb 19, 2005, at 12:37 AM, Sandy Rutherford wrote: >>>>>> On Fri, 18 Feb 2005 23:51:53 -0700, >>>>>> "Chad Leigh -- Shire.Net LLC" <chad@shire.net> said: > >> On Feb 18, 2005, at 11:39 PM, Spades wrote: > >>> hi, my server hardware supports hardware raid, i installed it >>> as per normal freebsd 5.3, however i see no difference >>> in df. its using 2 x 160GB, what do i do during the installation >>> to enable the raid? >>> >>> mobo: >>> http://www.supermicro.com/products/motherboard/Xeon800/E7320/X6DVL- >>> EG.cfm >>> >>> -bash-2.05b$ 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 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 Intel 6300ESB (part of a more general IO chip) " • 6300ESB (Hance Rapids) SATA Controller (2x Drive support) • 2x SATA Ports • RAID 0, 1, JBOD support" I don't see any specific mention of this in any of the HW notes for 5.3. I would be interested to see the dmesg output at boot time to see what the system sees for devices and controllers. If it is an ATA raid (pseudo HW RAID) then it would show as arX devices and not adX according to the handbook. Chad _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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