Alan Stern wrote: > On Wed, 31 Aug 2005, MAL wrote: > >>I have been using Linux with USB 2 for ~3 years, mostly as a means of >>imaging hard disks (reading and writing via usb-storage and sd-mod), but >>also to run ATAPI CD/DVD writers. I have had no problem with the latter >>(apart from throughput speed), but the former has given me no end of grief. >> ... >> >>Before I get the details and post them here, I wanted to make sure this >>isn't a common problem and that I wouldn't be flogging a dead horse by >>posting a load more error logs. >> >>Is USB 2 known to be stable in Linux on a large portion of host >>controller hardware? > > Before you start posting all sorts of debugging information and error > logs, try using the recently-released 2.6.13 kernel. It includes a change > to the error-recovery procedure in the usb-storage driver, which now will > work more or less the same as error-recovery in Windows.
ok, I've been using 2.6.13 for a while now and while the error recovery does now work (I can power cycle the device after it has a fit and it reconnects as a new USB device), the problem with random SCSI errors to USB2 hard disks continues, making them frustratingly unreliable. I have uploaded a kernel log here: http://dmesg:[EMAIL PROTECTED]/dmesg-20051025/dmesg.log I fresh booted the PC, (x86) with the USB-IDE caddy connected (shows up as sdb with 4 partitions), made ext3 filesystems on sdb1, 3 and 4, and made a swap filesystem on sdb2, then mounted the partitions and unpacked a tarball system image onto the partitions (~500MB of data). Part way through the unpacking, the device offlines and the tar fails horribly. This happens regularily for me, but NOT every time. Here is the lsusb -v output for the HDD caddy and the lspci -vv output for the host controller: http://dmesg:[EMAIL PROTECTED]/dmesg-20051025/lsusb.log http://dmesg:[EMAIL PROTECTED]/dmesg-20051025/lspci.log I'd be happy to provide more info if needed. Thanks all, MAL ------------------------------------------------------- This SF.Net email is sponsored by the JBoss Inc. Get Certified Today * Register for a JBoss Training Course Free Certification Exam for All Training Attendees Through End of 2005 Visit http://www.jboss.com/services/certification for more information _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
