Hi Michael,
So - what was the issue ? How was it solved ?
michael
On 10/30/07, Ralf Gross <[EMAIL PROTECTED]> wrote:
>
> Michael Galloway schrieb:
> > Wrote blk_block=3465000, dev_blk_num=9000 VolBytes=223,534,015,488 rate=
> 38171.8 KB/s
> > Wrote blk_block=3470000, dev_blk_num=14000 VolBytes=223,856,575,488
> rate=38194.3 KB/s
> > Wrote blk_block=3475000, dev_blk_num=3500 VolBytes=224,179,135,488 rate=
> 38184.1 KB/s
> >
> > 38MB/s is only around 140GB/hr. i'd expect a bit more from LTO-4.
>
> I get ~77 MB/s with a HP Ultrium LTP-4 drive during full backups and
> spooling (write speed to tape).
>
> > > > target5:0:15: Beginning Domain Validation
> > > > target5:0:15: Domain Validation skipping write tests
> > > > target5:0:15: Ending Domain Validation
> > > > target5:0:15: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 126)
> > > > target5:0:15: Beginning Domain Validation
> > > > target5:0:15: Domain Validation skipping write tests
> > > > target5:0:15: Ending Domain Validation
> > > > target5:0:15: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 126)
> > > > target5:0:15: Beginning Domain Validation
> > > > target5:0:15: Domain Validation skipping write tests
> > > > target5:0:15: Ending Domain Validation
> > > > target5:0:15: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 126)
> > > > target5:0:15: Beginning Domain Validation
> > > > target5:0:15: Domain Validation skipping write tests
> > > > target5:0:15: Ending Domain Validation
> > > > target5:0:15: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 126)
>
> I don't see the errors you get. But I also see "FAST-80 WIDE SCSI
> 160.0 MB/s" mesages in my kernel log. The HP tool ltt reports U160
> connections for both of my drives. Altough the scsi controller's bios
> claims during boot that the drives are connected with U320 and the
> drives are capable of U320.
>
> After boot I checked the scsi paramters and it looks like 6.25 would be
> the correct value for U320. But the HP tool still shows that the
> drives are connected with U160.
>
> /sys/class/spi_transport/target5\:0\:1/min_period
> 6.25
>
> Sorry for hijacking one half of your thread, but I would like to know
> if anyone has seen a FAST-160 message in the kernel log with tape
> drives. Not that I could saturate a U160 connection, but I would like
> to know why it's only connecting with U160 speed. An other LSI
> controller which is used for a RAID devices shows the propper U320
> (FAST-160) value during boot.
>
> Ralf
>
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--
Michael Lewinger
MBR Computers
http://mbrcomp.co.il
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