From: Jeff Garzik <jeff@garzik.org>
To: "Sumanth J.V" <sumanth@cse.unl.edu>
Cc: Andrew Morton <akpm@linux-foundation.org>, linux-ide@vger.kernel.org
Subject: Re: Fw: Spurious completions during NCQ
Date: Sat, 15 Sep 2007 19:57:13 -0400 [thread overview]
Message-ID: <46EC7159.6000904@garzik.org> (raw)
In-Reply-To: <20070915005751.353d0c69.akpm@linux-foundation.org>
Andrew Morton wrote:
>
> Begin forwarded message:
>
> Date: Fri, 07 Sep 2007 12:57:14 -0500
> From: "Sumanth J.V" <sumanth@cse.unl.edu>
> To: linux-kernel@vger.kernel.org
> Subject: Spurious completions during NCQ
>
>
> I keep seeing this message a few times a day on my box.
>
> ata1.00: exception Emask 0x2 SAct 0x18 SErr 0x0 action 0x2 frozen
> ata1.00: (spurious completions during NCQ issue=0x0 SAct=0x18
> FIS=004040a1:00000004)
> ata1.00: cmd 60/08:18:bf:04:df/00:00:23:00:00/40 tag 3 cdb 0x0 data 4096 in
> res 40/00:24:c7:04:df/00:00:23:00:00/40 Emask 0x2 (HSM violation)
> ata1.00: cmd 60/78:20:c7:04:df/00:00:23:00:00/40 tag 4 cdb 0x0 data 61440 in
> res 40/00:24:c7:04:df/00:00:23:00:00/40 Emask 0x2 (HSM violation)
> ata1: soft resetting port
> ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> ata1.00: configured for UDMA/133
> ata1: EH complete
> sd 0:0:0:0: [sda] 976773168 512-byte hardware sectors (500108 MB)
> sd 0:0:0:0: [sda] Write Protect is off
> sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
> sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't
> support DPO or FUA
>
>
>
> Can I assume that my data integrity is not compromised? Any idea what is
> happening to the pending writes during the soft reset? How can I verify
> that all the pending writes were committed?
>
> I have attached the output of my dmesg, lspci, sdparm and mdadm. Do let
> me know if you need any other info?
If the error handler can detect the condition (it did), then there is no
data integrity problem. We just "down-shift".
Jeff
next prev parent reply other threads:[~2007-09-15 23:57 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-15 7:57 Fw: Spurious completions during NCQ Andrew Morton
2007-09-15 23:57 ` Jeff Garzik [this message]
2007-09-16 12:47 ` Tejun Heo
2007-09-17 13:18 ` Sumanth J.V
-- strict thread matches above, loose matches on Subject: below --
2007-10-19 23:46 Andrew Morton
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=46EC7159.6000904@garzik.org \
--to=jeff@garzik.org \
--cc=akpm@linux-foundation.org \
--cc=linux-ide@vger.kernel.org \
--cc=sumanth@cse.unl.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).