OL6 uname -a = Linux bigbox1 3.8.13-68.3.3.el6uek.x86_64 #2 SMP Tue Jun 23 23:43:15 PDT 2015 x86_64 x86_64 x86_64 GNU/Linux

I have four usb disks that I plug in via a hub. They are recognized in dmesg | less -N, just one example for plugging in:

1316 usb 2-1.2.4.4: new high-speed USB device number 25 using ehci-pci
1317 usb 2-1.2.4.4: New USB device found, idVendor=174c, idProduct=55aa
1318 usb 2-1.2.4.4: New USB device strings: Mfr=2, Product=3, SerialNumber=1
1319 usb 2-1.2.4.4: Product: External HDD
1320 usb 2-1.2.4.4: Manufacturer: 01234567890123456789012345678901234567890123
1321 usb 2-1.2.4.4: SerialNumber: 20120223126E
1322 scsi26 : usb-storage 2-1.2.4.4:1.0
1323 scsi 26:0:0:0: Direct-Access TOSHIBA MK3276GSX GS00 PQ: 0 ANSI: 5
1324 sd 26:0:0:0: Attached scsi generic sg2 type 0
1325 sd 26:0:0:0: [sdb] 625142448 512-byte logical blocks: (320 GB/298 GiB)
1326 sd 26:0:0:0: [sdb] Write Protect is off
1327 sd 26:0:0:0: [sdb] Mode Sense: 23 00 00 00
1328 sd 26:0:0:0: [sdb] No Caching mode page found
1329 sd 26:0:0:0: [sdb] Assuming drive cache: write through
1330 sd 26:0:0:0: [sdb] No Caching mode page found
1331 sd 26:0:0:0: [sdb] Assuming drive cache: write through
1332 sdb: sdb1
1333 sd 26:0:0:0: [sdb] No Caching mode page found
1334 sd 26:0:0:0: [sdb] Assuming drive cache: write through
1335 sd 26:0:0:0: [sdb] Attached SCSI disk

In particular, I try to create a rule in /etc/udev/rules.d/60-raw.rules that triggers on

SerialNumber: 20120223126E

udev sees the device:

[root@bigbox1 ~]# udevadm info --query=all -n /dev/sdb
P: /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4.4/2-1.2.4.4:1.0/host26/target26:0:0/26:0:0:0/block/sdb
N: sdb
W: 642
S: block/8:16
S: disk/by-id/usb-TOSHIBA_MK3276GSX_20120223126E-0:0
S: disk/by-path/pci-0000:00:1d.0-usb-0:1.2.4.4:1.0-scsi-0:0:0:0
E: UDEV_LOG=3
E: DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4.4/2-1.2.4.4:1.0/host26/target26:0:0/26:0:0:0/block/sdb
E: MAJOR=8
E: MINOR=16
E: DEVNAME=/dev/sdb
E: DEVTYPE=disk
E: SUBSYSTEM=block
E: ID_VENDOR=TOSHIBA
E: ID_VENDOR_ENC=TOSHIBA\x20
E: ID_VENDOR_ID=174c
E: ID_MODEL=MK3276GSX
E: ID_MODEL_ENC=MK3276GSX\x20\x20\x20\x20\x20\x20\x20
E: ID_MODEL_ID=55aa
E: ID_REVISION=GS00
E: ID_SERIAL=TOSHIBA_MK3276GSX_20120223126E-0:0
E: ID_SERIAL_SHORT=20120223126E
E: ID_TYPE=disk
E: ID_INSTANCE=0:0
E: ID_BUS=usb
E: ID_USB_INTERFACES=:080650:
E: ID_USB_INTERFACE_NUM=00
E: ID_USB_DRIVER=usb-storage
E: ID_PATH=pci-0000:00:1d.0-usb-0:1.2.4.4:1.0-scsi-0:0:0:0
E: ID_PART_TABLE_TYPE=dos
E: LVM_SBIN_PATH=/sbin
E: DEVLINKS=/dev/block/8:16 /dev/disk/by-id/usb-TOSHIBA_MK3276GSX_20120223126E-0:0 /dev/disk/by-path/pci-0000:00:1d.0-usb-0:1.2.4.4:1.0-scsi-0:0:0:0

All my attempts to write one "add" and one "remove" rule for achieving

/bin/raw /dev/raw/raw1 %N

when adding and

/bin/raw /dev/raw/raw1 0 0

when removing failed. I am pretty confident that I am doing something wrong. Maybe someone can show me the right rule?

Note: I have several usb disks, and several places where those can appear. Is there a more suitable tag than ID_SERIAL_SHORT or SerialNumber?

My attempts so far:

ACTION=="add",SUBSYSTEM=="usb",ENV{SerialNumber}=="20120223126E",RUN+="/bin/raw /dev/raw/raw1 %N"
ACTION=="remove",SUBSYSTEM=="usb",ENV{SerialNumber}=="20120223126E",RUN+="/bin/raw /dev/raw/raw1 0 0"

ACTION=="add",SUBSYSTEM=="usb",ATTR{SerialNumber}=="20120223126E",RUN+="/bin/raw /dev/raw/raw1 %N"
ACTION=="remove",SUBSYSTEM=="usb",ATTR{SerialNumber}=="20120223126E",RUN+="/bin/raw /dev/raw/raw1 0 0"

ACTION=="add",SUBSYSTEM=="usb",ENV{ID_SERIAL_SHORT}=="20120223126E",RUN+="/bin/raw /dev/raw/raw1 %N"
ACTION=="remove",SUBSYSTEM=="usb",ENV{ID_SERIAL_SHORT}=="20120223126E",RUN+="/bin/raw /dev/raw/raw1 0 0"

ACTION=="add",SUBSYSTEM=="usb",ATTR{ID_SERIAL_SHORT}=="20120223126E",RUN+="/bin/raw /dev/raw/raw1 %N"
ACTION=="remove",SUBSYSTEM=="usb",ATTR{ID_SERIAL_SHORT}=="20120223126E",RUN+="/bin/raw /dev/raw/raw1 0 0"

Between each of these attempts, I made sure I did

udevadm control --reload-rules
udevadm trigger
# unplug the disk
# plug in the disk

Note: of course the /bin/raw command line itself works. I even prepared an executable script /tmp/raw that just takes all argument, echoes them to /tmp/raw.out and passes them to /bin/raw. So I know for sure the RUN+= was *not* executed.