|  | # Block device testing | 
|  |  | 
|  | Warning: All of the following tests are destructive, and they may not | 
|  | ask for confirmation before executing. Run at your own risk. | 
|  |  | 
|  | ## Protocol testing | 
|  |  | 
|  | `blktest` is an integration which may be used to check adherence to the block protocol. | 
|  |  | 
|  | ```shell | 
|  | $ 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 kernel command line option "zircon.system.disable-automount=true". | 
|  |  | 
|  | ```shell | 
|  | $ /boot/test/fs/fs-test -d /dev/class/block/000 -f minfs | 
|  | ``` | 
|  |  | 
|  | ## Correctness testing | 
|  |  | 
|  | `iochk` is a tool which pseudorandomly reads and writes to a block device to check for errors. | 
|  |  | 
|  | ```shell | 
|  | $ iochk -bs 32k -t 8 /dev/class/block/000 | 
|  | ``` | 
|  |  | 
|  | ## Performance testing | 
|  |  | 
|  | `iotime` is a benchmarking tool which tests the read and write performance of block devices. | 
|  |  | 
|  | ```shell | 
|  | $ iotime read fifo /dev/class/block/000 64m 4k | 
|  | ``` | 
|  |  | 
|  |  |