Hi list,
new patches are including logpage 30 and power uptime on logpage c are
available on http://www.mesa.nl
-Marcel
On Wed, Aug 27, 2003 at 06:27:20PM +0200, Anthonijsz, Marcel M SITI-ITDGE13
wrote:
> Hurray,
>
> With the help of Marcel Mol (Thanks!)I managed to read the wanted info from
> LTO CM. Marcel provides a patch on his site for tapeutil (see below). The
> patched
> tapeutil displays the log page info in human readable format (again, see
> below).
> I added (read copied and altered) some code to display Log Page 30 "Tape
> Usage Log".
> Now tapeutil -f /dev/rmt1 logpage 30 says following:
>
> Enter page code in hex: 30
>
> Enter parameter pointer in hex or <enter> for all parameters:
> Issuing log sense for page 0x30...
> 1 - Thread Count: 112
> 2 - Total Data Sets Written: 3245519
> 3 - Total Write Retries: 1336616
> 4 - Total Unrecovered Write Errors: 0
> 5 - Total Suspended Writes: 28027
> 6 - Total Fatal Suspended Writes: 0
> 7 - Total Data Sets Read: 666434
> 8 - Total Read Retries: 88
> 9 - Total Unrecovered Read Errors: 0
> 10 - Total Suspended Reads: 0
> 11 - Total Fatal Suspended Reads: 0
>
> And the thread count is increased each time the cartridge is loaded into a
> drive.
> Now only I have to find out what the relevance of the other figures are...
> Help apriciated!
>
> And - yes - it's radio technology, you have to put the cartridge into a drive
> to get
> readings (bummer!), otherwise it's all zeroes.. Now I can get stats for all my
> 1000 cartridges...
>
> See "IBM TotalStorage LTO Ultrium Tape Drive SCSI Reference GA32-0450" for
> detailed
> info. http://www.ibm.com/Search?v=11&lang=en&cc=us&q=GA32-0450
>
> Marcel Anthonijsz
> Central Data Storage Manager (a.k.a. storman)
> Shell Information Technology International B.V.
> PO Box 1027, 2260 BA Leidschendam, The Netherlands
>
> Tel: +31-70 303 4984
> Email: Marcel.Anthonijsz.at.shell.com
> Internet: http://www.shell.com
>
>
>
> Date: Tue, 26 Aug 2003 19:48:26 +0200
> From: "Marcel J.E. Mol" <marcel AT MESA DOT NL>
> Subject: Re: How to read LTO cartridge memory (was Re: Media Fault)
>
> On Tue, Aug 26, 2003 at 01:14:21PM +0200, Anthonijsz, Marcel M SITI-ITDGE13
> wrote:
> > Hi *SM'ers,
> >
> > Does anybody know how to read the LTO Cartridge memory from the LTO
> > cartridge?
>
> Is this the output you would like to see?
>
> Issuing log sense for page 0x0C...
> 0 - Write Bytes Received before Compression: 0
> 1 - Write Bytes Received after Compression: 0
> 2 - Read Bytes Sent before Compression: 0
> 3 - Read Bytes Sent after Compression: 0
> 0100 - Cleaning Required: 0
> 8000 - Megabytes processed since last cleaning: 20598158
> 8001 - Lifetime Load Cycles: 1313
> 8002 - Lifetime Cleaning Cycles: 1
>
> I created this by patching the tapeutil command a bit. It decodes the
> data from logpages C, 31 and 32.
>
>
> See http://www.mesa.nl for the patches. Follwo the download section...
>
> -Marcel
>
>
> > The LTO specs/brochure show an expected life cycle of about 1 million
> > mounts and recommends replacement after about 5000 loads.
> > We want to know how close we are to this figure. TSM forgets about mounts
> > as soon as a volume gets scratched...
> >
> > Now did somebody perform the exercise Richards Sims describes below?
> > If not... I see an opportunity here.... I never did SCSI programming, so
> > there must a first time for everything :-/
> >
> > Thanks!
> >
> > Marcel Anthonijsz
> > Central Data Storage Manager (a.k.a. storman)
> > Shell Information Technology International B.V.
> > PO Box 1027, 2260 BA Leidschendam, The Netherlands
> >
> > Email: Marcel.Anthonijsz.-at-.shell.com
> > Internet: http://www.shell.com
> >
> > Date: Jul 01, 09:42
> > From: Richard Sims <rbs AT BU DOT EDU>
> >
> > >Question is: Do you possibly know any software capable of extracting info
> > >from LTO CM??
> > >(I mean of course a program that can be run against a suspected cartridge)
> > >
> > >Wieslaw
> >
> > Now, you know you weren't supposed to ask that question... :-)
> >
> > My research indicates that vendors don't consider that customers should need
> > to access the Medium Auxiliary Memory (MAM) - the industry generic name for
> > an in-cartridge non-volatile memory chip which tracks usage and other info.
> > The manual "IBM TotalStorage LTO Ultrium Tape Drive - SCSI Reference"
> > (GA32-4050) fully describes their MAM and how to read and write it via SCSI
> > commands. The device driver programming manual (in this case, "IBM Ultrium
> > Device Drivers - Programming Reference (GC35-0483)) provides many ioctl
> > functions which make it easier for a programmer to invoke what resolve to
> > SCSI
> > commands; but in this case I see no ready operation for getting MAM data.
> > Those ioctl operations are what the handy-dandy ntutil and tapeutil commands
> > invoke to acquire info, and I see nothing in their doc saying that they can
> > return it (though it might be implicitly returned from other operations).
> >
> > All this is to say that with some SCSI programming, the information could be
> > obtained and presented. We don't have LTO here, so I'm not in a position to
> > try this out. So this remains an exercise for some industrious systems
> > programmer out there having LTO on-site.
> >
> > Richard Sims, Sr. Systems Programmer, Boston University OIT
> > <http://people.bu.edu/rbs>
>
> --
> ======-------- Marcel J.E. Mol MESA Consulting
> B.V.
> =======--------- ph. +31-(0)6-54724868 P.O. Box 112
> =======--------- marcel AT mesa DOT nl 2630 AC
> Nootdorp
> __==== www.mesa.nl ---____U_n_i_x______I_n_t_e_r_n_e_t____ The Netherlands
> ____
> They couldn't think of a number, Linux user 1148 --
> counter.li.org
> so they gave me a name! -- Rupert Hine -- www.ruperthine.com
--
======-------- Marcel J.E. Mol MESA Consulting B.V.
=======--------- ph. +31-(0)6-54724868 P.O. Box 112
=======--------- marcel AT mesa DOT nl 2630 AC
Nootdorp
__==== www.mesa.nl ---____U_n_i_x______I_n_t_e_r_n_e_t____ The Netherlands ____
They couldn't think of a number, Linux user 1148 -- counter.li.org
so they gave me a name! -- Rupert Hine -- www.ruperthine.com
|
