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Old 04-01-2012, 10:02 PM   #1
chenxiongni
LQ Newbie
 
Registered: Apr 2012
Posts: 12

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Smile Redhat unable to detect ext HDD


Hi All,

Thank you for viewing my first post, and appreciate for any helps.

I have a ext 3T usb HDD with power supply connect to my server on board usb port. Server is running Red Hat SE 4 at the moment.

When i do "fdisk -l", i could not see that disk list in anywhere.

when i do: tail -f /var/log/message while i was connecting and disconnecting that disk. no usb log at all.

and then i issue: dmesg |grep -i "SCSI" which gives me following log:
------------
scsi3 : SCSI emulation for USB Mass Storage devices
Type: Direct-Access ANSI SCSI revision: 02
SCSI device sdau: 732566645 4096-byte hdwr sectors (3000593 MB)
SCSI device sdau: 732566645 4096-byte hdwr sectors (3000593 MB)
Attached scsi disk sdau at scsi3, channel 0, id 0, lun 0
Attached scsi generic sg50 at scsi3, channel 0, id 0, lun 0, type 0
scsi: Device offlined - not ready after error recovery: host 3 channel 0 id 0 lun 0
SCSI error : <3 0 0 0> return code = 0x10000
scsi3 (0:0): rejecting I/O to device being removed
scsi4 : SCSI emulation for USB Mass Storage devices
--------

So, looks like there is I/O issue which is causing OS reject USB HDD.

I also did some research and found out ppl is talking about change the usb delay time:
http://www.aigarius.com/blog/2008/01...rage-in-linux/

but i could not see that sys/module/usb_storage/parameters/delay_use folder in my server.

Any suggestion of this issue?

Thank you very much.

Andy
 
Old 04-02-2012, 04:27 AM   #2
druuna
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Registered: Sep 2003
Posts: 10,532
Blog Entries: 7

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Hi,

You don't mention this but did you see and try what was written in comment no. 1?
Quote:
Note: you might have to do this first:

modprobe usb_storage
Hope this helps.
 
Old 04-02-2012, 06:07 PM   #3
chenxiongni
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Registered: Apr 2012
Posts: 12

Original Poster
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Smile Thank you

Hi druuna,

Thank you for your valuable reply.

as soon as i applied your comment and tried again, it is working now.

Nice.

Thank you.

Andy
 
Old 04-03-2012, 02:01 AM   #4
druuna
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Registered: Sep 2003
Posts: 10,532
Blog Entries: 7

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You're welcome

BTW: Can you put up the [SOLVED] tag.
first post -> Thread Tools -> Mark this thread as solved
 
  


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