Date: Wed, 4 May 2011 09:03:05 -0700 From: Freddie Cash <fjwcash@gmail.com> To: krad <kraduk@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: I am very confused and would appreciate some help on device renameing or on renumbering on current fstab. Message-ID: <BANLkTi=Gb8fA6_ABE5GMTCKEvvXQkEd6KQ@mail.gmail.com> In-Reply-To: <BANLkTimp3gfShVbB7bHMiFVeyxQVP4tfng@mail.gmail.com> References: <BANLkTi=C9BZLn2J7=t1_dq1cwgcRa0JWNA@mail.gmail.com> <201105030759.09518.jhb@freebsd.org> <BANLkTinMWO5uhoiYOHYJ_1C8dnXFDbqL%2BQ@mail.gmail.com> <201105031002.36612.jhb@freebsd.org> <BANLkTin5UHkuEyQt7bFRNbrVwfebXvA7Cg@mail.gmail.com> <20110504031312.GA78390@DataIX.net> <BANLkTimp3gfShVbB7bHMiFVeyxQVP4tfng@mail.gmail.com>
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On Wed, May 4, 2011 at 8:16 AM, krad <kraduk@gmail.com> wrote: > On 4 May 2011 04:13, Jason Hellenthal <jhell@dataix.net> wrote: >> Edwin, >> >> >>> >> =C2=A0/dev/acd0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/= cdrom =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0cd9660 =C2=A0ro,noauto =C2=A0 =C2= =A0 =C2=A0 0 >> =C2=A0 =C2=A0 0 >> >>> >> =C2=A0/dev/acd1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/= cdrom1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 cd9660 =C2=A0ro,noauto =C2=A0 =C2=A0 =C2= =A0 0 >> =C2=A0 =C2=A0 0 >> >> As a side note. These are also now useless & can be sent to /dev/null fo= r >> extra padding ;) >> >> Shouldn't cause no harm being there but just for reference. >> > Just a sanity check here people, but if the machine was built with freebs= d > 6.x i would guess it machine is a few years old. If so i doubt the hardwa= re > would support ahci, and therefore wouldn't have the ada type devices, it > would have the old ad style ata ones and therefore noe fstab twiddling > should be necessary. > > Forgive me if im missing something here. If you enable "options ATA_CAM" in the kernel, which uses the old ata(4) driver via some cam(4) shims, then you also get the adaX device nodes. There's currently 4 ways to access PATA/SATA disks: - old-style ata(4) using adX device nodes - old-style ata(4) using ataahci(4) for ACHI-like access to PATA/SATA disks, I believe using adX - old-style ata(4) via ATA_CAM using adaX device nodes - new-style ahci(4)/siis(4)/another(4) using adaX device nodes I forget the name of the other AHCI-style driver. The first two options uses atacontrol to manage the disks. The last two options use camcontrol to manage the disks. I believe the plan in 9.0 is to have everything accessed via ATA_CAM/ahci(4) so all PATA/SATA drives show up the same, as adaX, with everything being managed via camcontrol, finally unifying all PATA/SATA/SCSI/SAS disk access via cam(4). --=20 Freddie Cash fjwcash@gmail.com
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