bcache_function_tests

Basic function tests for bcache

1. Install the required packages for bcache tests: (for different OS release, you may need add required package repository) bcache-tools - Basic CLI for bcache fio - Load i/o stress tool python3 - "bcache-status" command needs python environment axel - Downloads a file from a FTP or HTTP server through multiple connection

You can also use the below command to install them

./bcache_main.bash -i

2. For more detail usage, please use the below manual page:

./bcache_main.bash -h

Usage: bcache_main.bash [OPTION]... -i Install the required packages: bcache-tools, python, fio etc -c Create/setup bcache environment -d Delete bcache devices and clean test environment -w Change writeback percent: 0-100 -p Replacement Policy "lru fifo random" -l Load fio stress, default fio config file "bcache.fio" -f fio configuration file, combind with "-l" option -g trigger gc -v flash volume -r Run the multi-threading i/o test -h Show this help

3. Adjustable parameters (examples as below, you should modify them based on your tests) att_det_loop" in "loop_detach_attach.bash"**

   • The loop number of bcache devices detach/attach

   Others are in "bcache_main.bash"

• File download target direcotory target_dir=/tmp/pythonmp

• Threading for "axel" downloading num_thread=10

• Download url url=https://download.opensuse.org/distribution/leap/15.3/iso/openSUSE-Leap-15.3-DVD-x86_64-Current.iso

• Md5_sum value for downloaded file md5_sum=916073802c22fad15d819f6ecf015905

• Bcache device used for muti-threading i/o tests file_io_dev=/dev/bcache0