Date: Sun, 3 Feb 2008 09:40:53 -0600 From: Matt <datahead4@gmail.com> To: "Christian Baer" <christian.baer@uni-dortmund.de> Cc: freebsd-questions@freebsd.org Subject: Re: Strange HDD order Message-ID: <cd6b4a5b0802030740p71bc3748p1b1a57c9829dfd79@mail.gmail.com> In-Reply-To: <fo4b5e$1phk$5@nermal.rz1.convenimus.net> References: <fo4b5e$1phk$5@nermal.rz1.convenimus.net>
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On Feb 3, 2008 6:13 AM, Christian Baer <christian.baer@uni-dortmund.de> wrote: > Greetings programs! > > I have a computer here with 10 HDDs. Four of them are connected to the > southbridge of the mainboard. The other 6 are connected to two Promise > SATAII 300 TX4. Four of the drives are connected to the first controller > (making it 'full') the other two connected to the second. > > To make the device names predictable I was very careful how I connected > them. The four drives connected to the southbridge are in the right order > (this also means they have the device names ad0 to ad3). The drives > connected to the other controllers are a different story. > > The two controllers cooperate well and identify themselves as one > controller only. So I get only one message showing all the drives. The > drives are in this order in the BIOS message: > > D 0 WDC WD3200SD-01KNB0 08.05J08 (ad4) > D 1 WDC WD3200SD-01KNB0 08.05J08 (ad6) > D 2 SAMSUNG HD501LJ CR100-11 (ad8) > D 3 SAMSUNG HD501LJ CR100-11 (ad10) > D 4 Seagate ST3500320AS SD04 (ad12) > D 5 Seagate ST3500320AS SD04 (ad14) > > The device in brackets is the one I'd expect to get. Instead, I get this: > > ad4: 476940MB <SAMSUNG HD501LJ CR100-11> at ata2-master SATA300 > ad6: 305245MB <WDC WD3200SD-01KNB0 08.05J08> at ata3-master SATA150 > ad8: 476940MB <SAMSUNG HD501LJ CR100-11> at ata4-master SATA300 > ad10: 305245MB <WDC WD3200SD-01KNB0 08.05J08> at ata5-master SATA150 > ad14: 476940MB <Seagate ST3500320AS SD04> at ata7-master SATA150 > ad18: 476940MB <Seagate ST3500320AS SD04> at ata9-master SATA150 > > Where did I go wrong? > > Regards, > Chris Is the concern with the apparent out-of-order numbering based on how you want to access these devices in areas like fstab? If so, I suggest using glabel(8) to label the drives and then address them by their labels elsewhere in the system. I think there may be cases where glabel won't be able to help, but it should work for many usage scenarios. Matthelp
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