[ltp] scsi vs ata ?

Fri, 20 Jun 2008 18:17:18 -0700

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Thanks for the reply,

I am using the scripts at:

http://www.thinkwiki.org/wiki/How_to_hotswap_UltraBay_devices

The eject gets to the beep at the end of the script. No files have been 
loaded so the only relevant steps are 4 and 5. Are they part of the scrip?

Thanks - Dan

Dmitry E. Mikhailov wrote:
> On Friday 20 June 2008 08:17:10 am Dan Sawyer wrote:
>   
>> Yes, the motivation was ultra bay hot swap. This works on DVD and CD
>> drives. Hard drive installs work. However hard drive removal result in a
>> hard kernel hang. The script gets to the beep successfully but then the
>> hard hang. Unfortunately there are no log entries. (the latest kernel
>> patches are installed)
>>
>> Is there a way to debug this?
>>     
>
> Hot remove isn't just hardware. It's software too.
>
> 1) close files on this drive
> 2)unmount filesystems
> 3)flush caches
> 4)instruct kernel to remove SCSI device
> 5)do hardware steps to remove
>
> If you don't do any of steps 1-4, kernel would wait for HDD forever and HDD 
> wouldn't respond because it is just not there.
>
> As you wrote, there's some sort of script. Please let me see it. Post here as 
> an attachment or provide a link.
>
>
> Best regards, Dmitry
>   

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Thanks for the reply,<br>
<br>
I am using the scripts at:<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.thinkwiki.org/wiki/How_to_hotswap_UltraBay_devices">http://www.thinkwiki.org/wiki/How_to_hotswap_UltraBay_devices</a><br>
<br>
The eject gets to the beep at the end of the script. No files have been
loaded so the only relevant steps are 4 and 5. Are they part of the
scrip?<br>
<br>
Thanks - Dan <br>
<br>
Dmitry E. Mikhailov wrote:
<blockquote cite="mid:200806201442.39911.sexandvodka@gmail.com"
 type="cite">
  <pre wrap="">On Friday 20 June 2008 08:17:10 am Dan Sawyer wrote:
  </pre>
  <blockquote type="cite">
    <pre wrap="">Yes, the motivation was ultra bay hot swap. This works on DVD and CD
drives. Hard drive installs work. However hard drive removal result in a
hard kernel hang. The script gets to the beep successfully but then the
hard hang. Unfortunately there are no log entries. (the latest kernel
patches are installed)

Is there a way to debug this?
    </pre>
  </blockquote>
  <pre wrap=""><!---->
Hot remove isn't just hardware. It's software too.

1) close files on this drive
2)unmount filesystems
3)flush caches
4)instruct kernel to remove SCSI device
5)do hardware steps to remove

If you don't do any of steps 1-4, kernel would wait for HDD forever and HDD 
wouldn't respond because it is just not there.

As you wrote, there's some sort of script. Please let me see it. Post here as 
an attachment or provide a link.

Best regards, Dmitry
  </pre>
</blockquote>
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