Date: Sat, 19 Feb 2005 21:47:24 -0700 From: Chad Leigh -- Shire.Net LLC <chad@shire.net> To: "Spades" <spades@galaxynet.org> Cc: List Free Bsd <freebsd-questions@freebsd.org> Subject: Re: raid1 Message-ID: <7aa7839bec01936ea3c064a84ad69178@shire.net> In-Reply-To: <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$162dc2cb@astral><5895876136a642eb60e73d6ebe87729c@shire.net><16918.60595.297759.953364@szamoca.krvarr.bc.ca> <6463233752496ef9dc7301fd33c035c9@shire.net> <008201c516f4$d9e78ff0$0a01a8c0@astral>
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On Feb 19, 2005, at 6:39 PM, Spades wrote: > How do we check if FreeBSD recorgnises it as individual drives or=20 > Hardware RAID array. Your raid chip appears to be a software ATA raid. man ata The raid appears as arN according to man ata look in the dmesg to see what happened at boot -- this will tell you=20= how the controller and drives were found by FreeBSD /var/run/dmesg.boot Chad > > ----- Original Message ----- From: "Chad Leigh -- Shire.Net LLC"=20 > <chad@shire.net> > To: "Sandy Rutherford" <sandy@krvarr.bc.ca> > Cc: <freebsd-questions@freebsd.org>; "Spades" <spades@galaxynet.org> > Sent: Saturday, February 19, 2005 5:46 PM > Subject: Re: raid1 > > > > On Feb 19, 2005, at 12:37 AM, Sandy Rutherford wrote: > >>>>>>> On Fri, 18 Feb 2005 23:51:53 -0700, >>>>>>> "Chad Leigh -- Shire.Net LLC" <chad@shire.net> said: >> >>> On Feb 18, 2005, at 11:39 PM, Spades wrote: >> >>>> hi, my server hardware supports hardware raid, i installed it >>>> as per normal freebsd 5.3, however i see no difference >>>> in df. its using 2 x 160GB, what do i do during the installation >>>> to enable the raid? >>>> >>>> mobo: >>>> http://www.supermicro.com/products/motherboard/Xeon800/E7320/X6DVL- >>>> EG.cfm >>>> >>>> -bash-2.05b$ 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=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 > 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 > 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=20 > "freebsd-questions-unsubscribe@freebsd.org"
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