On 04/15/15 08:39, Eugene M. Zheganin wrote:
I'm using the cardreader sometimes. The bad thing is that it's plugged
in the server. Yesterday someone replugged it, now the usb bus, as
camcontrol sees it, always shows an error:
[root@moscow-alpha:~]# camcontrol rescan all
Re-scan of bus 0 was successful
Re-scan of bus 1 was successful
Re-scan of bus 2 was successful
Re-scan of bus 3 was successful
Re-scan of bus 4 was successful
Re-scan of bus 5 was successful
Re-scan of bus 6 returned error 0xa
and the usbconfig just hangs.
Is there something I can do besides rebooting the server ?
Looks like a bug to me.
If you use KGDB and dump all threads, and look for usb_ or usbd_ , then
probably you'll see who is waiting for what. Typically most of these
problems reside in the CAM / SCSI layer, which does not release all
reference counts when the device is going away.
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