Date: Sat, 27 Oct 2012 10:22:01 +0200 From: Gerhard Schmidt <schmidt@ze.tum.de> To: Jeremy Chadwick <jdc@koitsu.org> Cc: freebsd@edvax.de, freebsd-questions@freebsd.org Subject: Re: ata controller problem Message-ID: <508B99A9.6000906@ze.tum.de> In-Reply-To: <20121026163338.GA32286@icarus.home.lan> References: <20121026163338.GA32286@icarus.home.lan>
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This is a multi-part message in MIME format. --------------020802060106010500090600 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Am 26.10.2012 18:33, schrieb Jeremy Chadwick: > Regarding this: > > http://lists.freebsd.org/pipermail/freebsd-questions/2012-October/245862.html > > No no NO *NO*! > > I wish people would stop recommending this utter garbage. There is > absolutely no justification behind using the highly convoluted labelling > mechanisms at multiple layers within FreeBSD. There are 3 (possibly 4) > different "label" mechanisms which do nothing but confuse the user, or > cause other oddities/complexities. Good grief, there is so much hard > evidence on the mailing lists over the past 5 (maybe even 7?) years > talking about the utter mess that is filesystem/device/geom/blahblah > labels that to recommend this is borderline insane. > > The proper way to solve this problem is to user /boot/loader.conf > tie-downs to assign each disk to each individual controllers' device > number (e.g. ada0 --> scbus0 --> ahcich0, or whatever you want). Please > note I said ahcichX, not ahciX. Different things. > > I have helped others in the past do this; Randy Bush is one such person. > > Taken directly from my /boot/loader.conf with a single SATA controller, > but obviously this can be adjusted to whatever you want. > > # "Wire down" device names (ada[0-5]) to each individual port > # on the SATA/AHCI controller. This ensures that if we reboot > # with a disk missing, the device names stay the same, and stay > # attached to the same SATA/AHCI controller. > # http://lists.freebsd.org/pipermail/freebsd-fs/2011-March/011036.html > # > hint.scbus.0.at="ahcich0" > hint.scbus.1.at="ahcich1" > hint.scbus.2.at="ahcich2" > hint.scbus.3.at="ahcich3" > hint.scbus.4.at="ahcich4" > hint.scbus.5.at="ahcich5" > hint.ada.0.at="scbus0" > hint.ada.1.at="scbus1" > hint.ada.2.at="scbus2" > hint.ada.3.at="scbus3" > hint.ada.4.at="scbus4" > hint.ada.5.at="scbus5" > > See CAM(4) man page (read it, don't skim!) for full details. Just > please for the love of god do not use labels to solve this. > Sorry this doesn't work because the numbering of the ahci change with the occupancy of the Hot-Swap Bays. And that is my Problem. This i have tried first. Any idea how i can fix which controller gets which number. Regard Estartu -- ------------------------------------------------- Gerhard Schmidt | E-Mail und JabberID: TU-München | schmidt@ze.tum.de WWW & Online Services | Tel: 089/289-25270 | Fax: 089/289-25257 | PGP-Publickey auf Anfrage --------------020802060106010500090600--
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