[CentOS] rescan usb hd

Wed Sep 23 09:00:32 UTC 2009
Stewart Williams <lists at pinkyboots.co.uk>

Quoting Yves Bellefeuille <yan at storm.ca>:

> On Tuesday 22 September 2009 18:59, William L. Maltby wrote:
>
>> On Tue, 2009-09-22 at 22:16 +0100, Stewart Williams wrote:
>
>> > What does 'sdparm -a /dev/sdc' yield? And what make/model is the
>> > disk?
>>
>> On 5.3 # sdparm -a /dev/sdc
>> -bash: sdparm: command not found
>
> He meant "hdparm", I think.
>
> --
> Yves Bellefeuille <yan at storm.ca>
> "Yves Bellefeuille: Eterna malvenkanto en UEA" -- Heroldo Komunikas,
> n-ro 389

No I definitely mean't "sdparm", it's available from RPMForge and it's  
different from "hdparm".

[stewart@##### ~]$ whatis sdparm
sdparm               (8)  - access SCSI modes pages; read VPD pages;  
send simple SCSI commands
sdparm              (rpm) - List or change SCSI disk parameters
[stewart@##### ~]$ whatis hdparm
hdparm               (8)  - get/set hard disk parameters
hdparm              (rpm) - A utility for displaying and/or setting  
hard disk parameters.

[stewart@##### ~]$ sudo yum whatprovides "*/sdparm"

...

sdparm-1.03-1.el5.rf.x86_64 : List or change SCSI disk parameters
Matched from:
Filename    : /usr/bin/sdparm

...

[stewart@##### ~]$ sudo /usr/bin/sdparm -a /dev/sde
Password:
     /dev/sde: Maxtor    OneTouch          0125
Power condition mode page:
   IDLE        0  [cha: n, def:  0, sav:  0]
   STANDBY     0  [cha: y, def:  1, sav:  0]
   ICT         0  [cha: n, def:  0, sav:  0]
   SCT       4294967286  [cha: y, def:9000, sav:4294967286]

The 'STANDBY' condition is what were interested in.