[gentoo-user] How to trim logs?

[Peter Humphrey]

Hello list,

I use a KVM switch to connect my mouse and keyboard to any of three boxes on
the LAN. Every time I switch to, say, the LAN server, I get spammed with a
bunch of messages like this (trimming out the first few fields):

kernel: usb 1-1: new high-speed USB device number 14 using ehci-pci
kernel: usb 1-1: New USB device found, idVendor=05e3, idProduct=0608
kernel: usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
kernel: usb 1-1: Product: USB2.0 Hub
kernel: hub 1-1:1.0: USB hub found
kernel: hub 1-1:1.0: 4 ports detected
kernel: usb 1-1.1: new low-speed USB device number 15 using ehci-pci
kernel: usb 1-1.1: New USB device found, idVendor=046a, idProduct=0011
kernel: usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
kernel: input: HID 046a:0011 as /devices/pci0000:00/0000:00:1d.7/usb1/1-1/1-1.1/1-1.1:1.0/0003:046A:0011.0009/input/input14
kernel: hid-generic 0003:046A:0011.0009: input,hidraw0: USB HID v1.10 Keyboard [HID 046a:0011] on usb-0000:00:1d.7-1.1/input0
kernel: usb 1-1.2: new low-speed USB device number 16 using ehci-pci
kernel: usb 1-1.2: New USB device found, idVendor=046d, idProduct=c050
kernel: usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
kernel: usb 1-1.2: Product: USB-PS/2 Optical Mouse
kernel: usb 1-1.2: Manufacturer: Logitech
kernel: input: Logitech USB-PS/2 Optical Mouse as /devices/pci0000:00/0000:00:1d.7/usb1/1-1/1-1.2/1-1.2:1.0/0003:046D:C050.000A/input/input15
kernel: hid-generic 0003:046D:C050.000A: input,hidraw1: USB HID v1.10 Mouse [Logitech USB-PS/2 Optical Mouse] on usb-0000:00:1d.7-1.2/input0

Also, every time I connect an external disk I get this lot:

kernel: usb 1-4: new high-speed USB device number 17 using ehci-pci
kernel: usb 1-4: New USB device found, idVendor=0bc2, idProduct=331a
kernel: usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
kernel: usb 1-4: Product: Expansion Desk
kernel: usb 1-4: Manufacturer: Seagate
kernel: usb 1-4: SerialNumber: NA8EAGTY
kernel: usb-storage 1-4:1.0: USB Mass Storage device detected
kernel: scsi host6: usb-storage 1-4:1.0
kernel: usbcore: registered new interface driver usb-storage
kernel: scsi 6:0:0:0: Direct-Access     Seagate  Expansion Desk   0909 PQ: 0 ANSI: 6
kernel: sd 6:0:0:0: [sdb] 3907029167 512-byte logical blocks: (2.00 TB/1.82 TiB)
kernel: sd 6:0:0:0: [sdb] Write Protect is off
kernel: sd 6:0:0:0: [sdb] Mode Sense: 47 00 00 08
kernel: sd 6:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
kernel:  sdb: sdb1 sdb2 < sdb5 >
kernel: sd 6:0:0:0: [sdb] Attached SCSI disk
kernel: EXT4-fs (sdb5): mounted filesystem with ordered data mode. Opts: (null)

In each case I'd like to omit the inessential lines from the VT-12 display;
I really don't need all that detail of the USB setup and it gets in the way
of what I do want to see, which is just the lines telling me which /dev/sdX
has been allocated to the disk, and probably nothing at all about the
mouse and keyboard.

I'm using syslog-ng. I've already modified syslog-ng.conf thus, to log cron
separately for the same reason:

[...]
source src { system(); internal(); };
filter f_cron { facility (cron); };
filter f_ncron { not facility (cron); };
destination d_cron { file("/var/log/cron"); };
destination messages { file("/var/log/messages"); };
destination console_all { file("/dev/tty12"); };
log { source(src); destination(messages); };
log { source(src); filter(f_cron); destination(d_cron); };
log { source(src); filter(f_ncron); destination(console_all); };

Is there a USB "facility" I can treat similarly? I haven't been able to find
where the facilities are defined.

-- 
Regards
Peter