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Tags: kvm* + tips*

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1. How to auto-hotplug usb devices to libvirt VMs (Update 1) | Roland's Blog

   'udevadm info -a -n /dev/ttyACM0' to find the real udev "names"
   
   ACTION=="add",
   SUBSYSTEM=="usb",
   ENV{ID_VENDOR_ID}=="03f0",
   ENV{ID_MODEL_ID}=="4217",
   RUN+="/usr/bin/virsh attach-device GUESTNAME /path/to/hostdev-03f0:4217.xml"
   ACTION=="remove",
   SUBSYSTEM=="usb",
   ENV{ID_VENDOR_ID}=="03f0",
   ENV{ID_MODEL_ID}=="4217",
   RUN+="/usr/bin/virsh detach-device GUESTNAME /path/to/hostdev-03f0:4217.xml"

   http://rolandtapken.de/blog/2011-04/h...plug-usb-devices-libvirt-vms-update-1

   Tags: kvm, tips by Visti Andresen (2020-11-30)

   Voting 0
2. Quad-Core CPU Only Shows As 1 Core? - [Solved] - CPUs

   what is your system OS ? Turbo mode enabled and the system is idling it may use minimum cores
   Press Windows Key and R and Type Msconfig, Goto Boot.ini Tab and Then click advanced --- Set /NUMPROC= to the maximum , Ok and restart the system --- Open Task manager when back in windows
   
   Note unchecking the selection seems to have done the trick here

   http://www.tomshardware.co.uk/forum/311323-28-quad-core-shows-core

   Tags: kvm, windows, tips, cpu, cores by Visti Andresen (2017-03-28)

   Voting 0
3. #652660 - udev: 70-persistent-net.rules is not generated - Debian Bug report logs

   /lib/udev/rules.d/75-persistent-net-generator.rules
   contains exceptions for KVM anf other VM netcards
   
   nano /etc/udev/rules.d/60-my-persistent-net.rules
   SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="b8:ac:6f:65:31:e5", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="wan0"

   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=652660

   Tags: tips, kvm, udev, network by Visti Andresen (2015-07-13)

   Voting 0
4. mounting-raw-and-qcow2-vm-disk-images.html

   modprobe nbd max_part=63
   qemu-nbd -c /dev/nbd0 image.img
   mount /dev/nbd0p1 /mnt/image

   http://alexeytorkhov.blogspot.dk/2009...ing-raw-and-qcow2-vm-disk-images.html

   Tags: tips, kvm, qemu, qcow2 by Visti Andresen (2014-03-05)

   Voting 0

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