插入u盘的udev事件：

udevadm monitor

5/target5:0:0/5:0:0:0/block/sdc (block)
KERNEL[11353.629010] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host5/target5:0:0/5:0:0:0 (scsi)
UDEV  [11353.693878] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host5/target5:0:0/5:0:0:0/block/sdc (block)
UDEV  [11353.696039] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host5/target5:0:0/5:0:0:0 (scsi)

插入带盘的光驱
KERNEL[71906.312315] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
KERNEL[71906.322178] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
KERNEL[71906.322381] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4 (scsi)
KERNEL[71906.322455] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/scsi_host/host4 (scsi_host)
KERNEL[71906.322522] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
KERNEL[71906.322620] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
UDEV  [71906.327652] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
UDEV  [71906.330802] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
UDEV  [71906.332712] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4 (scsi)
UDEV  [71906.334567] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/scsi_host/host4 (scsi_host)
UDEV  [71906.336713] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
UDEV  [71906.341876] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
KERNEL[71907.331644] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0 (scsi)
KERNEL[71907.331737] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [71907.333973] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0 (scsi)
UDEV  [71907.336119] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
KERNEL[71907.339654] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [71907.341250] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
KERNEL[71907.384132] add      /devices/virtual/bdi/11:0 (bdi)
KERNEL[71907.384283] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
KERNEL[71907.384597] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
KERNEL[71907.384631] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_device/4:0:0:0 (scsi_device)
KERNEL[71907.384735] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_generic/sg2 (scsi_generic)
KERNEL[71907.384812] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/bsg/4:0:0:0 (bsg)
UDEV  [71907.385290] add      /devices/virtual/bdi/11:0 (bdi)
KERNEL[71907.390689] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
KERNEL[71907.488869] add      /devices/virtual/bdi/251:0 (bdi)
KERNEL[71907.488984] add      /devices/virtual/block/pktcdvd0 (block)
KERNEL[71907.489439] add      /devices/virtual/pktcdvd/pktcdvd0 (pktcdvd)
UDEV  [71907.489857] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
UDEV  [71907.490250] add      /devices/virtual/bdi/251:0 (bdi)
UDEV  [71907.492445] add      /devices/virtual/pktcdvd/pktcdvd0 (pktcdvd)
UDEV  [71907.492481] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [71907.495196] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_device/4:0:0:0 (scsi_device)
UDEV  [71907.495336] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/bsg/4:0:0:0 (bsg)
UDEV  [71907.496312] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV  [71907.556758] add      /devices/virtual/block/pktcdvd0 (block)
UDEV  [71907.639662] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
KERNEL[71915.709858] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
UDEV  [71917.136616] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)

取出光盘
KERNEL[72100.606733] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
UDEV  [72101.747875] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
KERNEL[72101.751739] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
UDEV  [72101.792423] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)

插入光盘
KERNEL[72160.477896] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
UDEV  [72161.896294] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)

拔出带盘的光驱
KERNEL[72275.763849] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/bsg/4:0:0:0 (bsg)
KERNEL[72275.763966] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_generic/sg2 (scsi_generic)
KERNEL[72275.764031] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_device/4:0:0:0 (scsi_device)
KERNEL[72275.765322] remove   /devices/virtual/bdi/11:0 (bdi)
KERNEL[72275.765509] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
KERNEL[72275.765551] unbind   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
KERNEL[72275.765584] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [72275.767920] remove   /devices/virtual/bdi/11:0 (bdi)
KERNEL[72275.792348] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0 (scsi)
KERNEL[72275.792418] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/scsi_host/host4 (scsi_host)
KERNEL[72275.792493] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4 (scsi)
KERNEL[72275.792574] unbind   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
KERNEL[72275.792640] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
KERNEL[72275.794333] unbind   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
KERNEL[72275.794384] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
UDEV  [72275.936888] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV  [72275.936978] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/scsi_host/host4 (scsi_host)
UDEV  [72275.937006] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_device/4:0:0:0 (scsi_device)
UDEV  [72275.937033] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/bsg/4:0:0:0 (bsg)
KERNEL[72275.938575] remove   /devices/virtual/pktcdvd/pktcdvd0 (pktcdvd)
UDEV  [72275.939295] remove   /devices/virtual/pktcdvd/pktcdvd0 (pktcdvd)
KERNEL[72275.964373] remove   /devices/virtual/bdi/251:0 (bdi)
KERNEL[72275.964552] remove   /devices/virtual/block/pktcdvd0 (block)
UDEV  [72275.965132] remove   /devices/virtual/bdi/251:0 (bdi)
UDEV  [72275.965632] remove   /devices/virtual/block/pktcdvd0 (block)
UDEV  [72275.988646] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
UDEV  [72275.990205] unbind   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [72275.991415] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [72275.992492] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0 (scsi)
UDEV  [72275.993416] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4 (scsi)
UDEV  [72275.995181] unbind   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
UDEV  [72275.996714] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
UDEV  [72275.998765] unbind   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
UDEV  [72276.000625] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)

插入无光盘的光驱

KERNEL[72325.748585] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
KERNEL[72325.757114] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
KERNEL[72325.757322] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4 (scsi)
KERNEL[72325.757385] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/scsi_host/host4 (scsi_host)
KERNEL[72325.757447] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
KERNEL[72325.757530] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
UDEV  [72325.762525] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
UDEV  [72325.765725] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
UDEV  [72325.767480] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4 (scsi)
UDEV  [72325.769302] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/scsi_host/host4 (scsi_host)
UDEV  [72325.771484] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
UDEV  [72325.776554] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
KERNEL[72326.785737] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0 (scsi)
KERNEL[72326.785827] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [72326.788093] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0 (scsi)
KERNEL[72326.789230] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [72326.790131] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [72326.791676] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
KERNEL[72326.820095] add      /devices/virtual/bdi/11:0 (bdi)
KERNEL[72326.820251] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
KERNEL[72326.820590] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
KERNEL[72326.820623] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_device/4:0:0:0 (scsi_device)
KERNEL[72326.820757] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_generic/sg2 (scsi_generic)
KERNEL[72326.820834] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/bsg/4:0:0:0 (bsg)
UDEV  [72326.821386] add      /devices/virtual/bdi/11:0 (bdi)
KERNEL[72326.827175] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
KERNEL[72326.881811] add      /devices/virtual/bdi/251:0 (bdi)
KERNEL[72326.881932] add      /devices/virtual/block/pktcdvd0 (block)
KERNEL[72326.882037] add      /devices/virtual/pktcdvd/pktcdvd0 (pktcdvd)
UDEV  [72326.882417] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
UDEV  [72326.883189] add      /devices/virtual/bdi/251:0 (bdi)
UDEV  [72326.885867] bind     /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [72326.885904] add      /devices/virtual/pktcdvd/pktcdvd0 (pktcdvd)
UDEV  [72326.888554] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_device/4:0:0:0 (scsi_device)
UDEV  [72326.888961] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/bsg/4:0:0:0 (bsg)
UDEV  [72326.889986] add      /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV  [72326.901737] add      /devices/virtual/block/pktcdvd0 (block)
UDEV  [72326.941180] change   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)

拔出无光盘光驱

KERNEL[72378.960189] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/bsg/4:0:0:0 (bsg)
KERNEL[72378.960323] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_generic/sg2 (scsi_generic)
KERNEL[72378.960367] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_device/4:0:0:0 (scsi_device)
KERNEL[72378.960568] remove   /devices/virtual/bdi/11:0 (bdi)
KERNEL[72378.960736] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
KERNEL[72378.960772] unbind   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
KERNEL[72378.960812] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [72378.964547] remove   /devices/virtual/bdi/11:0 (bdi)
KERNEL[72378.996368] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0 (scsi)
KERNEL[72378.996444] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/scsi_host/host4 (scsi_host)
KERNEL[72378.996508] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4 (scsi)
KERNEL[72378.996582] unbind   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
KERNEL[72378.996639] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
KERNEL[72378.998283] unbind   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
KERNEL[72378.998331] remove   /devices/pci0000:00/0000:00:05./0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
UDEV  [72379.140884] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/scsi_host/host4 (scsi_host)
UDEV  [72379.140925] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_device/4:0:0:0 (scsi_device)
UDEV  [72379.140955] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/bsg/4:0:0:0 (bsg)
UDEV  [72379.140991] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/scsi_generic/sg2 (scsi_generic)
KERNEL[72379.142645] remove   /devices/virtual/pktcdvd/pktcdvd0 (pktcdvd)
UDEV  [72379.143432] remove   /devices/virtual/pktcdvd/pktcdvd0 (pktcdvd)
KERNEL[72379.172344] remove   /devices/virtual/bdi/251:0 (bdi)
KERNEL[72379.172483] remove   /devices/virtual/block/pktcdvd0 (block)
UDEV  [72379.173093] remove   /devices/virtual/bdi/251:0 (bdi)
UDEV  [72379.173504] remove   /devices/virtual/block/pktcdvd0 (block)
UDEV  [72379.196545] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0/block/sr0 (block)
UDEV  [72379.198220] unbind   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [72379.199479] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0/4:0:0:0 (scsi)
UDEV  [72379.200690] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4/target4:0:0 (scsi)
UDEV  [72379.201835] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0/host4 (scsi)
UDEV  [72379.203783] unbind   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
UDEV  [72379.205466] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1/1-4.1:1.0 (usb)
UDEV  [72379.207392] unbind   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)
UDEV  [72379.208864] remove   /devices/pci0000:00/0000:00:05.0/0000:06:00.0/usb1/1-4/1-4.1 (usb)