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From: Tejun Heo <>
To: Andrew Morton <>
Cc: Hans-Peter Jansen <>,,
Subject: Re: regular sata drive resets - worrisome?
Date: Sat, 29 Mar 2008 21:58:34 +0900	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Hello, Hans.

Andrew Morton wrote:
>> since I upgraded to 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.



  parent reply	other threads:[~2008-03-29 12:58 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-20 14:18 Hans-Peter Jansen
2008-03-21  4:48 ` Andrew Morton
2008-03-21 18:32   ` Roger Heflin
2008-03-21 23:06     ` Hans-Peter Jansen
2008-03-29 12:58   ` Tejun Heo [this message]
2008-03-30  0:14     ` Hans-Peter Jansen
2008-03-30  0:54       ` Tejun Heo
2008-03-30 12:00         ` Hans-Peter Jansen
2008-03-30 12:41           ` Roger Heflin
2008-03-31  4:33             ` Tejun Heo
2008-04-01 19:27               ` Roger Heflin

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