Block device testing

Protocol testing

blktest is an integration that may be used to check adherence to the block protocol.

$ blktest -d /dev/class/block/000

Filesystem testing

fs-test is a filesystem integration test suite that can be used to verify Fuchsia filesystem correctness on a filesystem.

To avoid racing with the auto-mounter, it is recommended to run this test with the assembly override:

--assembly-override '//build/images/fuchsia/*=//local:disable_automount'

with a //local/BUILD.gn file as follows:

import("//build/assembly/developer_overrides.gni")

assembly_developer_overrides("disable_automount") {
  platform = {
    storage = {
      disable_automount = false
    }
  }
}

$ /boot/test/fs/fs-test -d /dev/class/block/000 -f minfs

Correctness testing

iochk is a tool that pseudorandomly reads and writes to a block device to check for errors.

$ iochk -bs 32k -t 8 /dev/class/block/000

Performance testing

iotime is a benchmarking tool that tests the read and write performance of block devices.

$ iotime read fifo /dev/class/block/000 64m 4k