Date: Thu, 06 Aug 2009 22:56:44 +0300 From: Alexander Motin <mav@FreeBSD.org> To: Juergen Lock <nox@jelal.kn-bremen.de> Cc: freebsd-current@FreeBSD.org Subject: Re: (es)ata drives may need an explicit spinup command? Message-ID: <4A7B357C.5010203@FreeBSD.org> In-Reply-To: <20090806191848.GA14171@triton.kn-bremen.de> References: <20090806191848.GA14171@triton.kn-bremen.de>
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Juergen Lock wrote: > So I tested esata on a siis pcie card with a 750G Seagate Freeagent Pro > drive and it does work - until the drive falls into powersave mode > after being idle for a little while. :( (I had the drive on 1394 > before on another box where it was able to recover from this condition, > but not on usb or esata - and the drive's 1394 interface died a while > ago and also esata is faster anyway...) > > And now I came across this patch for the linux ata driver: > http://git.kernel.org/?p=linux/kernel/git/jgarzik/libata-dev.git;a=commitdiff;h=169439c2e35f01e7832a9b4fc8a7446980c3d593;hp=1e999736cafdffc374f22eed37b291129ef82e4e > > So my question is, could the same be done in our ata code? > I have a slight :) hope it would help this drive too at least as it > does seem to work on Linux... I am not sure it is related to your case, as you said your drive works for some time after plug. If drive spun-down automatically due to inactivity, it should spin-up automatically also, as OS unable to track that transition. 30 seconds of ATA command timeout should be sufficient for drive to do this. Do you have any other symptoms? -- Alexander Motin
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