Messages in this thread | | | Subject | Re: USB hangs | From | Lukas Postupa <> | Date | Sun, 11 Jan 2004 19:46:29 +0100 |
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Alan Cox wrote: > With the various fixes people had been posting USB storage > writing was still hanging repeatedly when doing a 20Gb rsync > to usb-storage disks with a low memory system. Doing things > like while(true) sync() made it hang even more often. > > After a bit of digging the following seems to fix it > > Not sure if 2.6 needs this as well.
I have similiar problems with kernel 2.6.0 on Intel architecture with 512 MB Ram.
My Abit IT7-MAX2 2.0 mainboard has two USB - EHCI controllers:
00:1d.7 USB Controller: Intel Corp. 82801DB USB EHCI Controller (rev 02)
02:06.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 51)
I'm using rsync to transfer my data to usb storage. Connecting usb storage to one of the 4 ports of VIA EHCI controller and then transferring data to it works good.
But connecting usb storage to one of the 6 ports of INTEL EHCI controller and then transferring data to it, will hang up usb storage:
Buffer I/O error on device sda1, logical block 121479 lost page write due to I/O error on sda1 Buffer I/O error on device sda1, logical block 121480 lost page write due to I/O error on sda1 ehci_hcd 0000:00:1d.7: GetStatus port 2 status 001002 POWER sig=se0 CSC hub 6-0:1.0: port 2, status 100, change 1, 12 Mb/s usb 6-2: USB disconnect, address 4 usb 6-2: usb_disable_device nuking all URBs usb 6-2: unregistering interface 6-2:1.0 usb-storage: storage_disconnect() called usb-storage: usb_stor_stop_transport called usb-storage: -- dissociate_dev usb-storage: -- sending exit command to thread usb-storage: *** thread awakened. usb-storage: -- exit command received usb-storage: -- usb_stor_release_resources finished usb 6-2: unregistering device
VIA EHCI controller uses interrupt 21. INTEL EHCI controller uses interrupt 23.
cat /proc/interrupts:
CPU0 0: 16675721 IO-APIC-edge timer 1: 6876 IO-APIC-edge i8042 2: 0 XT-PIC cascade 9: 5 IO-APIC-level acpi 12: 191706 IO-APIC-edge i8042 14: 251218 IO-APIC-edge ide0 15: 1 IO-APIC-edge ide1 16: 1446615 IO-APIC-level uhci_hcd, nvidia 18: 0 IO-APIC-level uhci_hcd, uhci_hcd 19: 278 IO-APIC-level uhci_hcd, uhci_hcd, EMU10K1 21: 257509 IO-APIC-level ehci_hcd 22: 7640 IO-APIC-level eth0 23: 322432 IO-APIC-level ehci_hcd NMI: 0 LOC: 16675149 ERR: 0 MIS: 0
Any ideas?
Lukas [unhandled content-type:application/pgp-signature] | |