[coLinux-devel] [ colinux-Bugs-2899010 ] scsi disk disconnects while creating an ext3 filesystem

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Bugs item #2899010, was opened at 2009-11-17 11:43
Message generated for change (Comment added) made by germansalvador
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: scsi disk disconnects while creating an ext3 filesystem

Initial Comment:
I'm trying to make a mkfs.ext3 /dev/sda1 , while sda is scsi0=\Device\Harddisk2\Partition0 , an 8 GB USB Flash Pen drive. 
Before mkfs ends, the linux console starts complaining with lots of lines like:

sd:0:0:0:0: rejecting I/O to offline device

and after stop, /sda is no longer visible.

Tried with the 20091115 snapshot.

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Comment By: German Salvador (germansalvador)
Date: 2009-11-19 09:02

Message:
As far as I know, \Device\HarddiskN\Partition0 refers to the whole device,
including MBR and all partitions. I'm, using it like that in other tool
without problems for a long time. I need access to the MBR because I need
to repartition the device.

About the other comment, I had a normal usage pattern while mkfs'ing the
disk, I opened other windows, change active focus, etc. I didn't did any
heavy task, but I was neither frozen while it worked. 

The Flash disk didn't had associated any drive letter, either.

German

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Comment By: Peter Kuznetsov (peter_kuznetsov)
Date: 2009-11-17 18:34

Message:
Just now I've noticed the error in your parameter:
scsi0=\Device\Harddisk2\Partition0 <== scsi0 is disk with Master Boot
Record, it is NOT partition.

When you run 'mkfs.ext3 /dev/sda1', you are trying to use  /dev/sda1 as
"the partition of of the partition", not as the partition of of the disk.
  
Your should use scsi0=\Device\Harddisk2 
(without '\Partition0)

Peter.


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Comment By: Peter Kuznetsov (peter_kuznetsov)
Date: 2009-11-17 17:02

Message:
Before 20091115 snapshot I've had the similar error. With 20091115
everything works. But you and me have different preconditions:

      My case                                            Your case 
        Image on hard drive                             USB pen drive 
        Only while switching NT processes    ???
 
When I've tested new SVN revision r1293, have tried only "simple" magic: 
  1. Open "Process Explorer" window.
  2. While 'mkfs' working, mouse clicked at "Process Explorer" and back at
"colinux-console-nt".

For previous revision with this two conditions the error was reproduced.
With last revision - not. 

If you want somebody to reproduce this error, please write, what have you
exactly did while 'mkfs.ext3' worked? I mean your activity with mouse,
keyboard, or other user interface input devices, which coLinux console was
used and so on. Some NT processes may block (lock) devices for it's
"individual use" and it is erroneus to work with  the drive or partition 
at this time from coLinux. So your "magic" may be much complicated than my.

Then I can check three USB Flash Drives of various vendors: 4, 8, and 32
Gb.

Peter.


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