Date: Tue, 23 Jan 2007 11:14:21 -0700 From: "Steve Franks" <stevefranks@ieee.org> To: "Damian Wiest" <dwiest@vailsys.com> Cc: FreeBSD Users Questions <freebsd-questions@freebsd.org> Subject: Re: hardware mirrors recognized as individual disks in fbsd Message-ID: <539c60b90701231014k5d8fb5d3s605fe764adc1ee5f@mail.gmail.com> In-Reply-To: <20070123011659.GD22569@dfwdamian.vail> References: <539c60b90701161033v5e316ef4m19332bd6e86ab67b@mail.gmail.com> <20070123011659.GD22569@dfwdamian.vail>
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dmesg gives me: atapci1: <AcerLabs M5287 SATA150 controller> port 0xec00-0xec0f,0xe880-0xe887,0xe800-0xe80f,0xe480-0xe487,0xe400-0xe41f mem 0xdffff800-0xdffffbff irq 21 at device 31.1 on pci0 Two pairs of drives are identical in terms of partitions, and no ar0 devices found, So I'd guess I have one of those "crappy software raid's:" that you mention. Guess I'll buy 2 new disks, format to 165's, build a BSD-software raid, take the two of the origonals over to the neighbor's for an off-site backup. Thanks all, Steve On 1/22/07, Damian Wiest <dwiest@vailsys.com> wrote: > On Tue, Jan 16, 2007 at 11:33:47AM -0700, Steve Franks wrote: > > I'm tired of win2k crashing, and we won't even go into my opinion of vista's > > strongarm marketing tactics (read: changing my hardware means I have to pay > > again? they can keep their OS). > > > > Problem is, I've got 320GB of accumulated detrius on ntfs volumes to > > migrate. I see there is some good r/w ports for ntfs, so I'm willing to > > evaluate that to see if it's stable (shoestring budget here obviously - this > > is my personal stuff only). > > > > Forging ahead, I get ready to start playing the mounting game, but > > lo-and-behold, suddenly I have 4 disks whereas in windows I had two. Now I > > praise FreeBSD for it's superior intellect here, but now I have a problem. > > I want two 160GB mirrored volumes, not 4 unmirrored ones. The RAID is an > > ASUS P5DR1-VM motherboard with a ULI raid chipset onboard. Very nice setup > > for the money. > > > > Is this normal? Am I going to break my mirror if I mount a single disk? If > > so, how do I mount a mirror? > > > > Thanks, > > Steve > > > > -- > > Steve Franks, KE7BTE > > Staff Engineer > > La Palma Devices, LLC > > http://www.lapalmadevices.com > > (520) 312-0089 > > It sounds like your onboard RAID chip is either not supported, or the > appropriate driver is not being loaded. Can you post the output of > dmesg? > > Also, be aware that you may not really have a hardware RAID chip. > Many (most?) times the onboard chips simply make multiple disks look > like a single LUN to the operating system; they also require driver > support. Real hardware RAID chips/cards tend to be expensive, > proprietary, don't require an OS driver and include a battery backup > system for data in the RAID cache should the system lose power. > > You may want to read up on gmirror. > > -Damian > > ps. I've got at least a half-dozen different x86 system boards that > include these crappy RAID chips from vendors like nVidia, Intel, > Adaptec, LSI, etc. Typically you get closed-source, Windows-only > driver support. > > pps. If you do want real hardware RAID support under FreeBSD, I've had > great experiences with the Promise arrays (m500 and m300) and > one of the PCI cards (I'd have to check on the exact model). > -- Steve Franks, KE7BTE Staff Engineer La Palma Devices, LLC http://www.lapalmadevices.com (520) 312-0089
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