[ltp] Problems accessing USB 2.0 disk from T40

Jordan Benjamin linux-thinkpad@linux-thinkpad.org
Wed, 19 Nov 2003 03:17:39 -0800

I just got a 120GB 7200 RPM hard drive in a USB 2.0 enclosure for 
backup using partimage. When I connected it to my T40 and tried saving 
some partition images to it, I found that the transfers were quite 
slow, and would pause for long periods of time. hdparm -t /dev/sda 
showed something like 750K/s, under the SystemRescueCD 0.28 and Fedora 
Core 1. I then read somewhere that there were problems with USB access 
in earlier kernel version, but that they were fixed in 2.6.0, so I 
tried a Gentoo 2.6.0 live CD. Now hdparm -t reports ~25MB/s, but 
partimage still freezes (it'll transfer 100MB in a few seconds and then 
sit for 30-60sec).

Has anyone had any problems like this?