Re: 2.6.38: XFS/USB/HW issue, or failing USB stick?

[Justin Piszcz <jpiszcz@lucidpixels.com>]

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On Fri, 18 Mar 2011, Alan Stern wrote:

> On Fri, 18 Mar 2011, Justin Piszcz wrote:
>
>> Hi,
>>
>> I can write to just about the entire USB stick, with no errors:
>>
>> atom:~# df -h
>> Filesystem            Size  Used Avail Use% Mounted on
>> /dev/sda2             5.8G  1.5G  4.3G  26% /
>> tmpfs                 2.0G     0  2.0G   0% /lib/init/rw
>> udev                   10M  140K  9.9M   2% /dev
>> tmpfs                 2.0G     0  2.0G   0% /dev/shm
>> atom:~# cd /
>> atom:/# ls
>> bin   cdrom  etc   lib    media  nfs  proc  sbin     srv  tmp  var
>> boot  dev    home  lib64  mnt    opt  root  selinux  sys  usr
>> atom:/# dd if=/dev/zero of=bigfile bs=1M count=4000
>> 4000+0 records in
>> 4000+0 records out
>> 4194304000 bytes (4.2 GB) copied, 135.536 s, 30.9 MB/s
>> atom:/# df -h
>> Filesystem            Size  Used Avail Use% Mounted on
>> /dev/sda2             5.8G  5.4G  350M  95% /
>> tmpfs                 2.0G     0  2.0G   0% /lib/init/rw
>> udev                   10M  140K  9.9M   2% /dev
>> tmpfs                 2.0G     0  2.0G   0% /dev/shm
>> atom:/# rm bigfile
>>
>> However, after some amount of time, the errors occur below, is this USB
>> stick failing?  Since it has no SMART, is there any other way to verify
>> the 'health' of a USB stick?
>
> None that I know of.
>
>> Mar 18 07:55:12 atom [   10.034310] e1000e 0000:03:00.0: eth1: 10/100 speed: disabling TSO
>>
>> [ .. no errors .. ]
>>
>> Mar 18 08:32:44 atom [ 2261.883848] usb 1-1: USB disconnect, address 2
>> Mar 18 08:32:44 atom [ 2261.884465] Buffer I/O error on device sda2, logical block 1317256
>
> The stick didn't "fail" in any obvious way, but for some reason it was
> disconnected from the USB bus.  (If it initiated that disconnect by
> itself, I guess you could consider that a failure.)  Maybe it was
> something as simple as overheating causing a loss of electrical contact
> between the connector and the pins in the USB port.

It is possible, but the box is kept cool:

w83627dhg-isa-0ca0
Adapter: ISA adapter
Vcore:       +1.16 V  (min =  +0.72 V, max =  +1.39 V) 
in1:         +1.04 V  (min =  +0.94 V, max =  +1.16 V) 
AVCC:        +3.34 V  (min =  +2.96 V, max =  +3.63 V) 
+3.3V:       +3.34 V  (min =  +2.98 V, max =  +3.63 V) 
in4:         +1.84 V  (min =  +1.62 V, max =  +1.98 V) 
in5:         +1.26 V  (min =  +1.13 V, max =  +1.38 V) 
in6:         +0.75 V  (min =  +0.67 V, max =  +0.83 V) 
3VSB:        +3.30 V  (min =  +2.96 V, max =  +3.63 V) 
Vbat:        +3.07 V  (min =  +2.96 V, max =  +3.63 V) 
fan1:          0 RPM  (min =  727 RPM, div = 64)  ALARM
fan2:          0 RPM  (min =  727 RPM, div = 64)  ALARM
fan3:          0 RPM  (min =  727 RPM, div = 64)  ALARM
fan4:       1240 RPM  (min =  712 RPM, div = 8)
fan5:          0 RPM  (min =  727 RPM, div = 64)  ALARM
temp1:       +36.0°C  (high = +75.0°C, hyst = +70.0°C)  sensor = thermistor
temp2:       +35.5°C  (high = +90.0°C, hyst = +87.0°C)  sensor = diode
temp3:       +19.0°C  (high = +80.0°C, hyst = +75.0°C)  sensor = diode
cpu0_vid:   +0.000 V

coretemp-isa-0000
Adapter: ISA adapter
Core 0:      +12.0°C  (crit = +100.0°C)

coretemp-isa-0001
Adapter: ISA adapter
Core 1:      +16.0°C  (crit = +100.0°C)

>
> ...
>> Mar 18 08:33:06 atom [ 2283.963059] usb 1-1: new high speed USB device using ehci_hcd and address 4
>> Mar 18 08:33:06 atom [ 2284.080647] usb 1-1: New USB device found, idVendor=0325, idProduct=ac02
>> Mar 18 08:33:06 atom [ 2284.080707] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
>> Mar 18 08:33:06 atom [ 2284.080752] usb 1-1: Product: R2_TURBO
>> Mar 18 08:33:06 atom [ 2284.080794] usb 1-1: Manufacturer: OCZ Technology
>> Mar 18 08:33:06 atom [ 2284.080831] usb 1-1: SerialNumber: (removed)
>
> And then 22 seconds later it reconnected.
>
> Alan Stern
>

Very strange, could some USB option cause this?  I guess next step is use
ext2 and a different stick in the same port to see if I can get it to recur.
Then if it happens again, try a different port.

Justin.