Date: Mon, 30 Mar 2009 14:57:43 +0300 From: Andriy Gapon <avg@icyb.net.ua> To: Alexander Motin <mav@FreeBSD.org> Cc: freebsd-hackers@FreeBSD.org Subject: Re: hot-attach SATA drive Message-ID: <49D0B3B7.60400@icyb.net.ua> In-Reply-To: <49D0A99B.4030908@FreeBSD.org> References: <49D0A46B.3000306@icyb.net.ua> <49D0A99B.4030908@FreeBSD.org>
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on 30/03/2009 14:14 Alexander Motin said the following: > Andriy Gapon wrote: >> Recently I tried to hot-attach a SATA drive to a running system. >> Controller is ICH9 in AHCI mode. Physically/electronically everything went >> smoothly, the drive spun-up. Then I tried to detach and re-attach all channels >> with no devices on them using atacontrol. I did it 3 times to be sure, but no new >> disk showed up. Then I finally rebooted, the disk showed up OK. >> >> Question: was hot-attach expected to work? Is there a limitation in hardware or in >> our driver? >> >> Note: I attached the drive to a regular SATA port, not eSATA. > > Which system version do you use? With recent CURRENT I have successfully > tested insert/remove SATA drives with ICH8, ICH8M and JMB363 AHCI > controllers channel attach/detach. Theoretically it is possible to > insert/remove SATA drives even without channel attach/detach. Remove > works fine, but such really hot insertion functionality is not > implemented properly now and so blocked. It was stable/7, amd64. Maybe there is a small subset of the changes in current that I could try in stable/7? -- Andriy Gapon
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