Andrew Morton wrote:
Begin forwarded message:
Date: Fri, 07 Sep 2007 12:57:14 -0500
From: "Sumanth J.V" <sumanth@xxxxxxxxxxx>
To: linux-kernel@xxxxxxxxxxxxxxx
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
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