[gllug] iostat

[Russell Howe]

On Wed, May 04, 2005 at 03:37:30PM +0100, Steve Nelson wrote:
> A chap was asking about finding the serial number of a disk.
> 
> Any ideas how to do this?

# hdparm -i /dev/hde

/dev/hde:

 Model=IBM-DTLA-307045, FwRev=TX6OA5AA, SerialNo=YMDYMG95248
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=40
 BuffType=DualPortCache, BuffSize=1916kB, MaxMultSect=16, MultSect=16
 CurCHS=65535/1/63, CurSects=4128705, LBA=yes, LBAsects=90069840
 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4 
 DMA modes:  mdma0 mdma1 mdma2 
 UDMA modes: udma0 udma1 *udma2 
 AdvancedPM=yes: disabled (255) WriteCache=enabled
 Drive conforms to: ATA/ATAPI-5 T13 1321D revision 1: 

 * signifies the current active mode

or

# grep ^hd /var/log/dmesg 
hda: ST313640A, ATA DISK drive
hdc: ST380021A, ATA DISK drive
hdd: Maxtor 33073H4, ATA DISK drive
hde: IBM-DTLA-307045, ATA DISK drive
hda: max request size: 128KiB
hda: 26562500 sectors (13600 MB) w/512KiB Cache, CHS=26351/16/63, UDMA(33)
hda: cache flushes not supported
hdc: max request size: 128KiB
hdc: 156312576 sectors (80032 MB) w/2048KiB Cache, CHS=65535/16/63, UDMA(33)
hdc: cache flushes not supported
hdd: max request size: 128KiB
hdd: 60030432 sectors (30735 MB) w/512KiB Cache, CHS=59554/16/63, UDMA(33)
hdd: cache flushes not supported
hde: max request size: 128KiB
hde: 90069840 sectors (46115 MB) w/1916KiB Cache, CHS=65535/16/63, UDMA(33)
hde: cache flushes not supported

or

# hddtemp /dev/hdc
/dev/hdc: ST380021A: 32°C

or for SCSI:

cat /proc/scsi/scsi (might now be deprecated?)

There's a shell script in the Debian 'scsitools' package which will list
all SCSI devices and their IDENTIFY information (I think that's what
it's called) as well, I think.

hdparm is soon to be replaced by blktool, AFAIK. I guess the rework was
in order to make it works with the new libata IDE layer.

I would expect to be able to get this information out of sysfs on 2.6.x,
but I can't see where to get the information from.

The 'modern' way to do it would be to ask hald or something.

-- 
Russell Howe       | Why be just another cog in the machine,
rhowe at siksai.co.uk | when you can be the spanner in the works?
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