pearasys

pearasys is a command-line tool for easily binding and unbinding PCIe device drivers by writing to sysfs, primarily for use with switching a gpu between vfio-pci and an OEM driver.

systemd

pearasys supports using systemd to control your device's drivers through a service. To install a service for a device, use the service install command:

$ sudo pearasys -d 10de:1b80 service install nvidia
Service installed successfully. Start service with command: `systemctl start pearasys-0000:04:00.0@nvidia.service`

See the documentation for pearasys service for more information.

Examples

• Binding nvidia to a gpu and it's audio device:

pearasys \
  -d 10de:10f0 -d 10de:1b80 \
  pci \ # pci sub commands are chainable
    driver vfio-pci unbind \
    driver nvidia new-id

• Unbinding vfio-pci from a device:

pearasys \
  -d 10de:10f0 \
  pci \
    driver vfio-pci remove-id \
    device remove \
    rescan

Note: Attempting to unbind a driver from a device in use will result in a hung process. In the event this occurs, check to see if your display manager, nvidia-persistenced, or another process is running on your GPU.

Usage

See USAGE.md for more information.