Hello Alan > Could be. Or maybe your earlier problems were caused by lack of > power and > the newer problems are caused by something else.
Yes, you could be right. But let us assume there is only one problem at a time :-) > > By the way, the drive has Genesys logic IDE-USB controller, and as > I > > said > > works fine on my other Linux system (laptop) and does not work in > USB2 > > mode on my Linux desktop. > > Apparently a lot of USB device controllers are brittle -- they work > okay > on some computers but not on others. Or maybe it's the USB host > controllers in the computers, or maybe both; it's hard to tell > without a > USB analyzer. Genesys Logic's chips have been known to be > troublesome > in the past, although now they seem to be doing better. > > What are the symptoms of your current failures? What shows up in the > dmesg output? What version of the Linux kernel are you using? > The symptoms of the problem are: After long writes to the USB drive, an I/O error occures. Drive disappears and has to be both unplugged from power and from USB to reset. THis happens if USB2 module is loaded. If it is not loaded, the drive works perfectly in USB1.1 mode (after I connected the external power to the PCI USB controller) The kernel is 2.6.14. On a different computer (laptop), the kernel is 2.6.13 and the drive works perfectly in USB2.0. The output of dmesg is below. But I think that USB debug and USB storage debug are off in the kernel. I will recompile the kernel to have them on. Thanks for your kind help Lazar ----------------------------------- usb 6-6: new high speed USB device using ehci_hcd and address 3 scsi1 : SCSI emulation for USB Mass Storage devices usb-storage: device found at 3 usb-storage: waiting for device to settle before scanning Vendor: IC35L060 Model: AVVA07-0 Rev: 0811 Type: Direct-Access ANSI SCSI revision: 00 SCSI device sda: 120103200 512-byte hdwr sectors (61493 MB) sda: assuming drive cache: write through SCSI device sda: 120103200 512-byte hdwr sectors (61493 MB) sda: assuming drive cache: write through sda: sda1 sda2 Attached scsi disk sda at scsi1, channel 0, id 0, lun 0 usb-storage: device scan complete kjournald starting. Commit interval 5 seconds EXT3 FS on sda2, internal journal EXT3-fs: recovery complete. EXT3-fs: mounted filesystem with ordered data mode. being removed scsi0 (0:0): rejecting I/O to device being removed scsi0 (0:0): rejecting I/O to device being removed scsi0 (0:0): rejecting I/O to device being removed [message repeats many times] Aborting journal on device sda2. scsi0 (0:0): rejecting I/O to device being removed scsi0 (0:0): rejecting I/O to device being removed [message repeats many times] journal commit I/O error scsi0 (0:0): rejecting I/O to device being removed scsi0 (0:0): rejecting I/O to device being removed scsi0 (0:0): rejecting I/O to device being removed [message repeats many times] EXT3-fs error (device sda2) in ext3_ordered_writepage: IO failure scsi0 (0:0): rejecting I/O to device being removed ext3_abort called. EXT3-fs error (device sda2): ext3_journal_start_sb: Detected aborted journal Remounting filesystem read-only __journal_remove_journal_head: freeing b_committed_data scsi0 (0:0): rejecting I/O to dead device printk: 25611 messages suppressed. Buffer I/O error on device sda2, logical block 522 lost page write due to I/O error on sda2 __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
