test.md

Test

There are three kind of tests: utest, itest and stest.

Unit tests (utest)

> make utest DEBUG=1
> make utest_all

Integration tests (itest)

wlog test

This test will use /dev/loop0 and /dev/loop1. The user must have disk group permission. Build walb-tools before.

> cd itest/wlog
> make

wdiff test

Build walb-tools before.

> cd itest/wdiff
> make

crash test

This test will check error handling code and crash recoery code are valid.

You need crashblk to run this test, which is available at crashblk repository.

Before running the test, load crashblk-mod.ko and walb-mod.ko modules.

Then create two crashblk devices. The size 100MB is enough.

> sudo crashblkc create 100M
0
> sudo crashblkc create 100M
1
> cat /proc/partitions |grep crashblk
251        0     102400 crashblk0
251        1     102400 crashblk1

Before you run the test, check variables crash-test.py script.

Finally, run the test:

> cd itest/crash
> python2 crash-test.py

Scenario tests (stest)

See stest/scenario0.py.

Prepare to run scenario test.

• load walb kernel driver.
• build walb-tools.
• prepare lvm volume groups vg0, vg1, vg2.
• prepare lvm volumes /dev/test/data, /dev/test/data2, /dev/test/data3, /dev/test/log, /dev/test/log2, /dev/test/log3. Device sizes are all 12MiB.

A sample command:

cd walb
git checkout -b 3.10 origin/for-3.10 # for ubuntu 14.0
cd module
make
sudo insmod walb-mod.ko
sudo apt-get install pylint # for pylint
# make lvm volumes
dd if=/dev/zero of=disk0 bs=1m count=300
dd if=/dev/zero of=disk1 bs=1m count=300
dd if=/dev/zero of=disk2 bs=1m count=300
dd if=/dev/zero of=disk3 bs=1m count=300

sudo losetup /dev/loop0 disk0
sudo losetup /dev/loop1 disk1
sudo losetup /dev/loop2 disk2
sudo losetup /dev/loop3 disk3

sudo pvcreate test /dev/loop0
sudo pvcreate vg0 /dev/loop1
sudo pvcreate vg1 /dev/loop2
sudo pvcreate vg2 /dev/loop3

sudo vgcreate test /dev/loop0
sudo vgcreate vg0 /dev/loop1
sudo vgcreate vg1 /dev/loop2
sudo vgcreate vg2 /dev/loop3

sudo lvcreate -L 12M -n data test
sudo lvcreate -L 12M -n data2 test
sudo lvcreate -L 12M -n data3 test
sudo lvcreate -L 12M -n log test
sudo lvcreate -L 12M -n log2 test
sudo lvcreate -L 12M -n log3 test

This test will use several ports in 10000-30300. See parameters defined in stest/scenario0.py.

Run all tests just one time.

> sudo python stest/scenario0.py

Run all tests 10 times.

> sudo python stest/scenario0.py 10

Run the tests n1, e1, e2, e3 only 10 times.

> sudo python stest/scenario0.py 10 n1 e1 e2 e3

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