Date: Sun, 05 Jun 2011 22:50:31 +0000 From: "Dieter BSD" <dieterbsd@engineer.com> To: mav@freebsd.org Cc: freebsd-drivers@freebsd.org Subject: Re: ahci(4) doesn't work with Hitachi 3TB drive Message-ID: <20110605225033.198080@gmx.com>
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Testing the 3 TB disk with the 3132 controller went fine. Smartctl -a works. Reading and writing with dd work. Switched it back to the JMB363 controller. Smartctl -a does not work. Still says 150 MB/s rather than 300. It would be nice if hint.ahcich.1.sata_rev could be set with a sysctl to avoid the need for a reboot. Reads smaller than about 90KB appears to always work as expected. Reads larger than about 90KB sometimes works fine, sometimes are very slow and give timeout error: dd if=/dev/ada11 bs=1m count=1 > /dev/null 1048576 bytes transferred in 0.008948 secs (117184368 bytes/sec) 1048576 bytes transferred in 0.008901 secs (117802714 bytes/sec) 1048576 bytes transferred in 0.009025 secs (116184459 bytes/sec) 1048576 bytes transferred in 0.009055 secs (115802062 bytes/sec) 1048576 bytes transferred in 0.008970 secs (116897815 bytes/sec) 1048576 bytes transferred in 0.009054 secs (115814260 bytes/sec) 1048576 bytes transferred in 60.234137 secs (17408 bytes/sec) ahcich1: Timeout on slot 0 ahcich1: is 00000000 cs 00000000 ss 00000001 rs 00000001 tfd 50 serr 00000000 The larger the read the more likely it is to timeout. Behaviour is the same with hint.ahcich.1.sata_rev="1" or ="2"
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