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Message-ID: <47EE3CFA.2000707@gmail.com> Date: Sat, 29 Mar 2008 21:58:34 +0900 From: Tejun Heo <htejun@...il.com> To: Andrew Morton <akpm@...ux-foundation.org> CC: Hans-Peter Jansen <hpj@...la.net>, linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org Subject: Re: 2.6.24.3: regular sata drive resets - worrisome? Hello, Hans. Andrew Morton wrote: >> since I upgraded to 2.6.24.3 on one of my production systems, I see >> regular device resets like these: >> >> Mar 20 14:33:03 lisa5 kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen >> Mar 20 14:33:03 lisa5 kernel: ata2.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0 >> Mar 20 14:33:03 lisa5 kernel: res 40/00:00:01:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout) Ouch, timeout on FLUSH_EXT. Are all errors on cmd ea? >> Should I be worried? smartd doesn't show anything suspicious on those. Can you please post the result of "smartctl -a /dev/sdX"? >> It's been 4 samsung drives at all hanging on a sata sil 3124: FLUSH_EXT timing out usually indicates that the drive is having problem writing out what it has in its cache to the media. There was one case where FLUSH_EXT timeout was caused by the driver failing to switch controller back from NCQ mode before issuing FLUSH_EXT but that was on sata_nv. There hasn't been any similar problem on sata_sil24. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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