teuthology-describe-tests --combinations

gistfile1.txt

$ teuthology-describe-tests -c --subset 3/10 ~/ceph-qa-suite/suites/rbd/basic 
+------------------+---------+-----------+----------+-------+---------------+---------------+---------------------------------------------+
| subsuite depth 0 | base    | cachepool | clusters | fs    | msgr-failures | tasks         | desc                                        |
+------------------+---------+-----------+----------+-------+---------------+---------------+---------------------------------------------+
| basic            | install | none      | fixed-1  | btrfs | few           | rbd_cli_tests | install ceph                                |
|                  |         |           |          |       |               |               | default replicated pool                     |
|                  |         |           |          |       |               |               | infrequent network fault injection          |
|                  |         |           |          |       |               |               | basic rbd cli tool tests                    |
+------------------+---------+-----------+----------+-------+---------------+---------------+---------------------------------------------+
| basic            | install | small     | fixed-1  | btrfs | many          | rbd_cls_tests | install ceph                                |
|                  |         |           |          |       |               |               | writeback replicated cache pool for rbd     |
|                  |         |           |          |       |               |               | frequent network fault injection            |
|                  |         |           |          |       |               |               | low-level object class tests for cls_rbd.so |
+------------------+---------+-----------+----------+-------+---------------+---------------+---------------------------------------------+

$ teuthology-describe-tests -c --subset 3/10 --format json ~/ceph-qa-suite/suites/rbd/basic | json_reformat 
{
    "headers": [
        "subsuite depth 0",
        "base",
        "cachepool",
        "clusters",
        "fs",
        "msgr-failures",
        "tasks",
        "desc"
    ],
    "data": [
        {
            "cachepool": "none",
            "fs": "btrfs",
            "msgr-failures": "few",
            "subsuite depth 0": "basic",
            "tasks": "rbd_cli_tests",
            "base": "install",
            "clusters": "fixed-1",
            "desc": "install ceph\ndefault replicated pool\ninfrequent network fault injection\nbasic rbd cli tool tests"
        },
        {
            "cachepool": "small",
            "fs": "btrfs",
            "msgr-failures": "many",
            "subsuite depth 0": "basic",
            "tasks": "rbd_cls_tests",
            "base": "install",
            "clusters": "fixed-1",
            "desc": "install ceph\nwriteback replicated cache pool for rbd\nfrequent network fault injection\nlow-level object class tests for cls_rbd.so"
        }
    ]
}

$ teuthology-describe-tests -c --subset 3/10 --format csv ~/ceph-qa-suite/suites/rbd/basic
subsuite depth 0,base,cachepool,clusters,fs,msgr-failures,tasks,desc
basic,install,none,fixed-1,btrfs,few,rbd_cli_tests,"install ceph
default replicated pool
infrequent network fault injection
basic rbd cli tool tests"
basic,install,small,fixed-1,btrfs,many,rbd_cls_tests,"install ceph
writeback replicated cache pool for rbd
frequent network fault injection
low-level object class tests for cls_rbd.so"