linux-kernel - Re: Strange ATA problems

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Date:	Fri, 14 Dec 2007 16:44:55 +0100
From:	Christoph Anton Mitterer <calestyo@...entia.net>
To:	Tejun Heo <htejun@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Strange ATA problems

Hi Tejun.


On Sat, 2007-12-15 at 00:16 +0900, Tejun Heo wrote:
> Do you have log with timestamp?  It's difficult to tell what's going on
> without knowing what happened when.
Ah sorry,... I've completely missed that... perhaps those two problems
were not related (at least there's so much time between).

Dec 13 17:05:51 fermat kernel: NVRM: loading NVIDIA UNIX x86_64 Kernel
Module  100.14.19  Wed Sep 12 14:08:38 PDT 2007
Dec 13 17:12:36 fermat kernel: usb 1-1: new high speed USB device using
ehci_hcd and address 5
Dec 13 17:12:36 fermat kernel: usb 1-1: configuration #1 chosen from 1
choice
Dec 13 17:12:36 fermat kernel: scsi6 : SCSI emulation for USB Mass
Storage devices
Dec 13 17:12:36 fermat kernel: usb-storage: device found at 5
Dec 13 17:12:36 fermat kernel: usb-storage: waiting for device to settle
before scanning
Dec 13 17:12:41 fermat kernel: scsi 6:0:0:0: CD-ROM            PLEXTOR
DVD-ROM PX-130A  1.03 PQ: 0 ANSI: 0 CCS
Dec 13 17:12:41 fermat kernel: sr0: scsi3-mmc drive: 0x/50x cd/rw
xa/form2 cdda tray
Dec 13 17:12:41 fermat kernel: sr 6:0:0:0: Attached scsi CD-ROM sr0
Dec 13 17:12:41 fermat kernel: sr 6:0:0:0: Attached scsi generic sg3
type 5
Dec 13 17:12:41 fermat kernel: usb-storage: device scan complete
Dec 13 17:13:33 fermat kernel: end_request: I/O error, dev sr0, sector
308688
Dec 13 17:13:33 fermat kernel: Buffer I/O error on device sr0, logical
block 77172
Dec 13 17:13:33 fermat kernel: Buffer I/O error on device sr0, logical
block 77173
Dec 13 17:13:33 fermat kernel: end_request: I/O error, dev sr0, sector
308688
Dec 13 17:13:33 fermat kernel: Buffer I/O error on device sr0, logical
block 77172
Dec 13 17:13:33 fermat kernel: Buffer I/O error on device sr0, logical
block 77173
Dec 13 17:13:33 fermat kernel: end_request: I/O error, dev sr0, sector
308816
Dec 13 17:13:33 fermat kernel: Buffer I/O error on device sr0, logical
block 77204
Dec 13 17:13:33 fermat kernel: Buffer I/O error on device sr0, logical
block 77205
Dec 13 17:13:33 fermat kernel: end_request: I/O error, dev sr0, sector
308816
Dec 13 17:13:33 fermat kernel: Buffer I/O error on device sr0, logical
block 77204
Dec 13 17:13:33 fermat kernel: Buffer I/O error on device sr0, logical
block 77205
Dec 13 17:18:32 fermat kernel: UDF-fs: No VRS found
Dec 13 18:09:43 fermat kernel: tun0: Disabled Privacy Extensions
Dec 14 01:06:33 fermat kernel: usb 1-1: USB disconnect, address 5
Dec 14 01:06:33 fermat kernel: ata1: EH in ADMA mode, notifier 0x0
notifier_error 0x0 gen_ctl 0x1501000 status 0x400 next cpb count 0x0
next
 cpb idx 0x0
Dec 14 01:06:33 fermat kernel: ata1: CPB 0: ctl_flags 0x1f, resp_flags
0x2
Dec 14 01:06:33 fermat kernel: ata1: CPB 1: ctl_flags 0x1f, resp_flags
0x2
Dec 14 01:06:33 fermat kernel: ata1: CPB 2: ctl_flags 0x1f, resp_flags
0x2
Dec 14 01:06:33 fermat kernel: ata1: CPB 3: ctl_flags 0x1f, resp_flags
0x2
Dec 14 01:06:33 fermat kernel: ata1: CPB 4: ctl_flags 0x1f, resp_flags
0x2
Dec 14 01:06:33 fermat kernel: ata1: CPB 5: ctl_flags 0x1f, resp_flags
0x2
Dec 14 01:06:33 fermat kernel: ata1: CPB 6: ctl_flags 0x1f, resp_flags
0x2
Dec 14 01:06:33 fermat kernel: ata1: CPB 7: ctl_flags 0x1f, resp_flags
0x2
Dec 14 01:06:33 fermat kernel: ata1: CPB 8: ctl_flags 0x1f, resp_flags
0x2
Dec 14 01:06:33 fermat kernel: ata1: CPB 9: ctl_flags 0x1f, resp_flags
0x2
Dec 14 01:06:33 fermat kernel: ata1: CPB 10: ctl_flags 0x1f, resp_flags
0x2
Dec 14 01:06:33 fermat kernel: ata1: timeout waiting for ADMA IDLE,
stat=0x400
Dec 14 01:06:33 fermat kernel: ata1.00: exception Emask 0x0 SAct 0x7ff
SErr 0x0 action 0x2 frozen
Dec 14 01:06:33 fermat kernel: ata1.00: cmd
61/10:00:2e:07:a8/01:00:0b:00:00/40 tag 0 cdb 0x0 data 139264 out
Dec 14 01:06:33 fermat kernel:          res
40/00:01:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
Dec 14 01:06:33 fermat kernel: ata1.00: cmd
61/18:08:07:3f:02/00:00:00:00:00/40 tag 1 cdb 0x0 data 12288 out
Dec 14 01:06:33 fermat kernel:          res
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Dec 14 01:06:33 fermat kernel: ata1.00: cmd
61/08:10:b6:a8:23/00:00:0d:00:00/40 tag 2 cdb 0x0 data 4096 out
Dec 14 01:06:33 fermat kernel:          res
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Dec 14 01:06:33 fermat kernel: ata1.00: cmd
61/08:18:f6:37:68/00:00:0d:00:00/40 tag 3 cdb 0x0 data 4096 out
Dec 14 01:06:33 fermat kernel:          res
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Dec 14 01:06:33 fermat kernel: ata1.00: cmd
61/08:20:9e:32:a1/00:00:0d:00:00/40 tag 4 cdb 0x0 data 4096 out
Dec 14 01:06:33 fermat kernel:          res
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Dec 14 01:06:33 fermat kernel: ata1.00: cmd
61/08:28:4f:00:dc/00:00:02:00:00/40 tag 5 cdb 0x0 data 4096 out
Dec 14 01:06:33 fermat kernel:          res
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Dec 14 01:06:33 fermat kernel: ata1.00: cmd
61/08:30:6f:00:dc/00:00:02:00:00/40 tag 6 cdb 0x0 data 4096 out
Dec 14 01:06:33 fermat kernel:          res
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Dec 14 01:06:33 fermat kernel: ata1.00: cmd
61/08:38:3f:03:2c/00:00:05:00:00/40 tag 7 cdb 0x0 data 4096 out
Dec 14 01:06:33 fermat kernel:          res
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Dec 14 01:06:33 fermat kernel: ata1.00: cmd
61/08:40:36:ea:72/00:00:0d:00:00/40 tag 8 cdb 0x0 data 4096 out
Dec 14 01:06:33 fermat kernel:          res
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Dec 14 01:06:33 fermat kernel: ata1.00: cmd
61/08:48:7f:00:c4/00:00:05:00:00/40 tag 9 cdb 0x0 data 4096 out
Dec 14 01:06:33 fermat kernel:          res
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Dec 14 01:06:33 fermat kernel: ata1.00: cmd
61/08:50:47:02:d8/00:00:05:00:00/40 tag 10 cdb 0x0 data 4096 out
Dec 14 01:06:33 fermat kernel:          res
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Dec 14 01:06:33 fermat kernel: ata1: soft resetting port
Dec 14 01:06:33 fermat kernel: ata1: SATA link up 3.0 Gbps (SStatus 123
SControl 300)
Dec 14 01:06:33 fermat kernel: ata1.00: configured for UDMA/133
Dec 14 01:06:33 fermat kernel: ata1: EH complete
Dec 14 01:06:33 fermat kernel: sd 0:0:0:0: [sda] 488397168 512-byte
hardware sectors (250059 MB)
Dec 14 01:06:33 fermat kernel: sd 0:0:0:0: [sda] Write Protect is off
Dec 14 01:06:33 fermat kernel: sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
Dec 14 01:06:33 fermat kernel: sd 0:0:0:0: [sda] Write cache: enabled,
read cache: enabled, doesn't support DPO or FUA
Dec 14 01:27:45 fermat kernel: Kernel logging (proc) stopped.



> Also, please post the result of
> 'cat /proc/interrupts'.
           CPU0       CPU1       CPU2       CPU3       
  0:        393       1181      82962    4513047   IO-APIC-edge
timer
  1:          0          0          0          2   IO-APIC-edge
i8042
  6:          0          0          0          5   IO-APIC-edge
floppy
  8:          0          0          0          0   IO-APIC-edge      rtc
  9:          0          0          0          0   IO-APIC-fasteoi
acpi
 12:          0         84       1376     210883   IO-APIC-edge
i8042
 14:          0          3         17       1220   IO-APIC-edge
ide0
 18:          0         64       4964     300769   IO-APIC-fasteoi
nvidia
 19:          0          0          0          3   IO-APIC-fasteoi
ohci1394
 20:          0          0          0          4   IO-APIC-fasteoi
ehci_hcd:usb1
 21:          0          0          1        165   IO-APIC-fasteoi
sata_nv
 22:          0         44       1856     165693   IO-APIC-fasteoi
sata_nv, NVidia CK804
 23:          0        117       8565     452639   IO-APIC-fasteoi
ohci_hcd:usb3, eth1
 24:          0         37       3710     185125   IO-APIC-fasteoi
ICE1724
 30:          3       1833      52841   18139903   IO-APIC-fasteoi
ioc0, ehci_hcd:usb2
 31:          0          0          0         45   IO-APIC-fasteoi
ioc1
 55:        129     530948          1         81   IO-APIC-fasteoi
eth2
NMI:          0          0          0          0 
LOC:    4597004    4596930    4596860    4596786 
ERR:          0


> If your USB cdrom is bus powered and you yanked it, it could have caused
> fluctuation in power which in turn can cause disruption on serial ATA
> bus leading to transmission error and timeouts.  There are other
> possibilities but this kind of thing does happen often with SATA.  Those
> highspeed low-voltage serial links are very susceptible to interferences.
Well,.. it actually "worked" again when I unplugged it, but the errors
from the cdrom above are probably unrelated..


> As long as EH recovered it properly, there's nothing to worry about.
What does that mean?

Thanks and regards,
Chris.

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