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Date:      Sat, 29 Jun 2013 11:07:42 +0430
From:      s m <sam.gh1986@gmail.com>
To:        freebsd-questions <freebsd-questions@freebsd.org>
Subject:   already active DMA on this device FAILURE at startup
Message-ID:  <CAA_1SgHjxEE=2KzDUXzXYRCX+te3v5O=RFvqgUMr=NyYBaR_hw@mail.gmail.com>

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hello all,

i have FreeBSD8.2 on my system. occasionally,  i see some strange errors in
startup and freebsd can not boot correctly. when i reset my system
everything is ok and freebsd boot successfully. these are errors which
appear in statrtup:

ata1: setting up DMA failed
ad3: WARNING - READ_DMA requeued due to channel reset LBA=25167888
ata1: FAILURE - already active DMA on this device

these errors repeat more and more.

i don't know what's wrong in my freebsd. i have used freebsd for several
years and have not seen these errors before.
last few days ago, i set a separate partition for etc. can separate etc
partition cause this problem? how can i solve it to never see these errors
again? (i need a separate partition for etc)

thanks in advance,
SAM



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