Add -R option to blktests (similar to -R opton in xfstests)

[schlad]

I'm working on this right now; I aim at having as little changes to the check file as possible, so that we could possibly have something working in blktests soon and then I/we could improve on this further.

I try to add following "formats" to begin with: text, xunit.

It should produce single file report under $OUTPUT/

for text:
"text report generated on Mon May 11 11:23:17 CEST 2020

nodev loop/001
status pass
description scan loop device partitions
runtime 0.489s
date 2020-05-11 11:23:17
exit_status 0

nodev loop/007
status pass
description update loop device capacity with filesystem
runtime 0.949s
date 2020-05-11 11:23:18
exit_status 0

..."

[schlad]

First trivial PR to get some comments: #62

For xunit I would wonder how to build the structure of tags. I'll propose something later on as I already run blktests in the CI and have working xunit examples.

[osandov]

Hi, sorry about the delay, I've been away for a few weeks. What's the use case for this feature? Is it too difficult to parse the existing format and translate it to another format after the fact?

[schlad]

Absolutely no problem. Thanks for checking this 'issue' and thanks for your comments.

The use case: I would like to be able to generate test run summary in a single file, so that any usage of blktests in CI-like systems would be easier.

Parsing/translating existing format into any other format is sure trivial, however I would hope having top file (let it be text) combining all test results could help, if one runs blktests against many TEST_DEVS.

I would also hope, maybe naively, that allowing to generate the test run summary could help realizing problems as the one fixed in:
commit ccf7dc4
Author: Klaus Jensen k.jensen@samsung.com
Date: Wed Apr 22 09:44:36 2020 +0200

Fix unintentional skipping of tests