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
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