On 20.12.2007 10:36, Alan Stern wrote: > On Thu, 20 Dec 2007, Matthias Schniedermeyer wrote: > > > Attached are the syslog-dumps of the 3G test and a fresh 8G test. > > > > For the 8G test the HDD went AWOL (again). > > You know, it's possible that the problem lies outside your computer. > Maybe the hub/keyboard/mouse/whatever you have attached to the other > port isn't working right. That could cause the events you are > experiencing.
You are on to something. I'm down to - snip - Bus 007 Device 002: ID 059b:0277 Iomega Corp. Bus 007 Device 001: ID 0000:0000 Bus 006 Device 001: ID 0000:0000 Bus 005 Device 001: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 002 Device 001: ID 0000:0000 Bus 001 Device 001: ID 0000:0000 - snip - And 2 minutes went OK with 1GiB so i rebooted to 8GB and i could copy 40GB of files with no incident. This is interesting, i pluged the (High-Speed-)HUB with the Low-Speed peripherals into another root-port. How can it be that this brings down the WHOLE usb subsystem, the computer that i replaced with this machine only had an USB-OHCI controller onboard, so i plugged the HDD into an add-on USB-controller and the same(!) low-speed devices where driven by the OHCI-driver? About a year ago i had a whole tree of Hubs, HDDs and Gembird power-switches (4 switchable ports per device), after my tree reached about 40 HDDs(*) the whole tree went unstable and i tought that it maybe just didn't scale so i abandoned the idea. There should also be a mail-thread from me from that time around! *: 40 HDD, means 8 gembird devices = 48 "leaf" USB ports = 9x 7-Ports hubs, connected to 2x 4-Port-Hubs connected to a 4 Port-Hub connected to the Root-Port. The tree was designed to reach 88 HDDs with 112 leaf-usb-ports (2 unused) Bis denn -- Real Programmers consider "what you see is what you get" to be just as bad a concept in Text Editors as it is in women. No, the Real Programmer wants a "you asked for it, you got it" text editor -- complicated, cryptic, powerful, unforgiving, dangerous. - To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
