Timing file read/write over NFS

[Tom Buskey]

On Thu, Dec 18, 2008 at 2:25 PM, Mark Komarinski <mkomarinski at wayga.org>wrote:

> On 12/18/2008 11:29 AM, Tom Buskey wrote:
> >
>
> I'd expect hdparm to be tied closely to PCs with IDE or SATA(?)
> > drives.  I know it won't work with SCSI drives on PCs..
> Yes it does: SATA (and IDE I think) disks show up as /dev/sd? devices
> now.  But hdparm is more geared to work with block devices, so it
> doesn't really work with NFS mounts.
>

SATA and IDE show up as "emulated" SCSI drives.  They're not really SCSI.

Rereading the hdparm man page for Fedora 10, I stand corrected:

      Although this utility is intended primarily for use  with  (E)IDE
hard
       disk devices, several of the options are also valid (and permitted)
for
       use with SCSI hard disk devices and MFM/RLL hard disks with  XT
inter-
       faces.

I know there was work done on sdparm specifically for SCSI devices once upon
a time.

In any event, they work on block devices, not network file systems.  Hmm, I
wonder how iSCSI and ATOE mix in?
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