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Date: Mon, 30 Mar 2009 13:52:27 +0300
From: Andriy Gapon <avg@icyb.net.ua>
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Cc: Alexander Motin <mav@FreeBSD.org>
Subject: hot-attach SATA drive
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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.

-- 
Andriy Gapon