Re: long tests automatically get interrupted

On 06/14/2014 12:24 PM, Christian Franke wrote:
> Andrew Engelbrecht wrote:
>> when i run long tests in debian sid, they usually get interrupted:
>>
>> dmesg shows the following line near the interruption time for test #2:
>>
>>> [153384.901218] usb 1-1.1: reset high-speed USB device number 6 using ehci-pci

> Running captive tests via SAT may not work because smartctl does not
> pass a long command timeout to the SCSI pass-through ioctl. And even
> then it would require that the SAT layer in the USB bridge firmware
> supports such long (several hours) timeouts.
> 
> 
> Non-captive tests may be interrupted by a standby command sent to the
> drive after some time of I/O inactivity. Many USB bridges do this.
> 
> Try to run some script which accesses the drive during the test. This
> may work or not:
> 
> while true; do
>   dd if=/dev/sdX iflag=direct count=1 of=/dev/null
>   sleep 60
> done

i ran some tests for you. the results table is printed below. test #3
was done without -C and without your script. it was interrupted by the host.

i ran tests #1 and #2 without -C and with your script. they both
completed without error.

so it looks like your script idea worked, unless i got lucky. :-)

i tried to edit the FAQ, but it's restricted. perhaps other people will
find your script useful.

thanks,
-andrew


test results:

> SMART Self-test log structure revision number 1
> Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
> # 1  Extended offline    Completed without error       00%        88         -
> # 2  Extended offline    Completed without error       00%        84         -
> # 3  Extended offline    Interrupted (host reset)      80%        81         -
> # 4  Extended offline    Completed without error       00%        77         -
> # 5  Short offline       Completed without error       00%        74         -
> # 6  Extended captive    Interrupted (host reset)      90%        73         -
> # 7  Extended captive    Interrupted (host reset)      90%         3         -
> # 8  Extended offline    Interrupted (host reset)      40%         3         -
> # 9  Conveyance offline  Completed without error       00%         0         -
> #10  Short offline       Completed without error       00%         0         -



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