restore(8) to USB key: terrible slow

[Matthias Apitz]

El día Wednesday, November 17, 2010 a las 01:14:19PM +0100, Hans Petter Selasky escribió:

> > after around 90 minutes of restore the taget file system says 19 MByte
> > used (i.e restored):
> > 
> > $ df -kh /mnt
> > Filesystem     Size    Used   Avail Capacity  Mounted on
> > /dev/da0s1a    3.6G     19M    3.3G     1%    /mnt
> > 
> > What is wrong with this? If this does matter: 8-CURRENT.
> > 
> > Thanks
> > 
> > 	matthias
> 
> Hi,
> 
> Maybe you get some answers from:
> 
> sysctl hw.usb.umass.debug=-1
> 
> Kernel needs to be compiled with:
> 
> options USB_DEBUG

Thanks; I have to build a kernel for this ...

When I write the key just with dd(1) it performs normal with big blocks:

# dd if=/home/guru/usb9root.dmp of=/dev/da0 bs=1m count=100
100+0 records in
100+0 records out
104857600 bytes transferred in 16.650550 secs (6297546 bytes/sec)

and slow with 512 byte blocks:

# dd if=/home/guru/usb9root.dmp of=/dev/da0 count=100
100+0 records in
100+0 records out
51200 bytes transferred in 1.997130 secs (25637 bytes/sec)

any idea or do we need the debug output?

	matthias
-- 
Matthias Apitz
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