Re: [ANNOUNCE] sdparm 0.90

[folkert@vanheusden.com]

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oh wait, 2.6 yes?
then forget my bugreport (running 2.4.26-NANO)

On Mon, Apr 18, 2005 at 11:26:03PM +1000, Douglas Gilbert wrote:
> sdparm is a new command line utility designed to get and set
> SCSI disk parameters (cf hdparm for ATA disks). More generally
> it gets and sets mode page information on SCSI devices or devices
> that use a SCSI command set (e.g. CD/DVD drives (any transport)
> and SCSI tape drives).
> 
> The elements within mode pages are addressed via acronyms
> (e.g. "WCE" for "write cache enable" in the caching mode
> page). There is also numeric addressing of the form:
> <start_byte>:<start_bit>:<num_bits>
> This symbolic or numeric addressing should be more
> convenient for changing parameters than the techniques used
> by scsiinfo, sginfo and sg_wr_mode.
> 
> A GUI wrapping sdparm would be a useful extension.
> It could show the mode page as found in the standard or
> the vendor's product manual with attributes such as
> "changeable" represented by colour or shading.
> 
> I hope to add VPD pages in the future. sdparm shares some
> code with sg3_utils but is currently independent; they may
> share a library (libsgutils) in the future.
> 
> A tarball, rpms and a "deb" can be found on
> http://www.torque.net/sg .
> Currently, the most complete documentation is in the
> man page.
> 
> 
> Examples (taken from the man page):
> To list the common (mode) parameters of a disk:
> 
>     sdparm /dev/sda
> 
> To see all parameters for the caching control mode page:
> 
>     sdparm --page=ca /dev/sda
> 
> To get the WCE values (current changeable default and
> saved) in hex:
> 
>     sdparm -g WCE -H /dev/sda
>   0x01 0x00 0x01 0x01
> 
> To get the WCE current value in hex:
> 
>     sdparm -g WCE=1 -H /dev/sda
>   0x01
> 
> To set the "write cache enable" bit in the current page:
> 
>     sdparm --set=WCE /dev/sda
> 
> To set the "write cache enable" bit in the current and
> saved page:
> 
>     sdparm --set=WCE --save /dev/sda
> 
> To set the "write cache enable" and clear "read cache
> disable":
> 
>     sdparm --set=WCE --clear=RCD --save /dev/sda
> 
> The previous example can also by written as:
> 
>     sdparm -s WCE=1,RCD=0 -S /dev/sda
> 
> To re-establish the manufacturer?s defaults in the
> current and saved caching control mode page:
> 
>     sdparm --page=ca --defaults -save /dev/sda
> 
> If an ATAPI cd/dvd player is at /dev/hdc then its common
> (mode) parameters could be listed with:
> 
>           sdparm /dev/hdc
> 
> 
> Comments, suggestions and patches welcome.
> 
> 
> Doug Gilbert
> -
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Folkert van Heusden

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