Fajun Chen wrote:
Hi Tejun, Below are the tests I performed: Test1: a) Power off the drive b) echo "scsi remove-single-device h b t l" > /proc/scsi/scsi or delete using sysfs c) Power on the drive d) echo "scsi add-single-device h b t l" > /proc/scsi/scsi or scan using sysfs The kernel error in my first email is induced in this test but not consistently reproducible. In most of the case, no kernel error but sg was not reattached when adding device. Test2: Ignore step c) in test1. Basically, try to add device while the device is still powered off. Hope this helps.
Was the drive loaded with commands issued via /dev/sgX when you did above operation?
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