Date: Mon, 11 Apr 2011 11:52:31 +0300 From: Alexander Motin <mav@FreeBSD.org> To: Alexander Best <arundel@freebsd.org> Cc: freebsd-scsi@freebsd.org, freebsd-current@freebsd.org Subject: Re: multiple issues with devstat_*(9) Message-ID: <4DA2C14F.60905@FreeBSD.org> In-Reply-To: <20110411083821.GA80320@freebsd.org> References: <20110331223339.GA13682@freebsd.org> <201104010843.47367.jhb@freebsd.org> <20110404204316.GA11367@freebsd.org> <4D9D9917.3030102@FreeBSD.org> <20110410115644.GA55815@freebsd.org> <4DA210D3.5090807@FreeBSD.org> <20110411025646.GA46088@freebsd.org> <4DA2A33B.8010807@FreeBSD.org> <20110411083821.GA80320@freebsd.org>
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Alexander Best wrote: > On Mon Apr 11 11, Alexander Motin wrote: >> Alexander Best wrote: >>> my cd0 is a pata atapi dvdrom drive and i have the following in my kernel conf: >>> >>> device atacore >>> device ahci >>> device atajmicron >>> device atapci >>> #device atapicd >>> device atapicam >>> >>> device umass >>> device scbus >>> device cd >>> device pass >>> device da >>> device random >>> device pty >>> device md >>> >>> the dmesg entries for cd0 are: >>> >>> cam_periph_alloc: attempt to re-allocate valid device cd0 rejected >>> cdasync: Unable to attach new device due to status 0x6 >>> cd0 at ata2 bus 0 scbus8 target 0 lun 0 >>> cd0: <HL-DT-ST DVDRAM GSA-H10N JL12> Removable CD-ROM SCSI-0 device >>> cd0: 3.300MB/s transfers >>> cd0: cd present [2149024 x 2048 byte records] >> Aha, that's it. It is atapicam's lie. atapicam is one of a things that >> will go away during migration to CAM ATA. If you remove `device >> atapicam`, but add `options ATA_CAM` instead, CAM will manage that bus >> directly and report it as ATA. > > thanks for the hint. i also read the following in the ahci(4) man page: > > " Driver features include support for Serial ATA and ATAPI devices, ..." > > ...does that mean that my DVD drive can also attach to the ahci driver? If it is SATA and you connect it to AHCI controller -- yes, it will work with ahci(4) controller driver. -- Alexander Motin
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