On Wed, Jul 09, 2014 at 12:13:28AM +0530, AYAN KUMAR HALDER wrote:
Hi All,
When a usb mass-storage is attached for the first time, it gets a device (/dev/sda).
When it is mounted and the device is manually removed and then when it is attached again, it gets a different name ie /dev/sdb.
Really? Not on my system, what kernel are you using?
This is because earlier the mass-storage device was removed (manually) when it was mounted, so scsi_disk_release() did not get called as the device (sda) had a reference count > 1.
It should have...
So, if my understanding is correct, I would like to know if the above mentioned behaviour is a bug or a limitation of the kernel?
What is wrong with the device node showing back up as /dev/sdb? You shouldn't be relying on a device node name for doing anything "real" anyway, that's what /dev/disk/ is there for, the persistent links are designed for you to mount with. thanks, greg k-h