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04.01.2018 12:06, Paul Neuwirth пишет:
KERNEL[487838.926954] add /devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc (block) KERNEL[487838.926986] change /devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc (block) KERNEL[487838.927021] change /devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc (block) KERNEL[487838.927054] change /devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc (block) KERNEL[487939.384425] change /devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc (block) KERNEL[488039.884765] change /devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc (block) KERNEL[488039.895676] change /devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc (block)
OK, this confirms that at the end it is kernel issue. You should really report it to kernel folks as true solution must be implemented in kernel driver. So there are two issues - (initial) spin up and permanent stream of "change" events. To workaround the latter - try disabling periodic device polling in kernel: echo 0 > /sys/block/sdc/events_poll_msecs and check with "udevadm monitor" whether events stop. For the former you can pass quirk parameter to scsi_mod; create /etc/modprobe.d/teac.conf (name is arbitrary) with: options scsi_mod dev_flags=TEAC:FC-5:4096 Check /sys/block/sdc/device/{vendor,model} for correct values. This flag suppresses initial spin up of device. You will need to reboot (and do not forget you also need to recreate initrd as scsi_mod is most likely loaded there).