Audience: anyone working on cephfs, general testing interest.
The tests in ceph-qa-suite/tasks/cephfs are growing in number, but kind
of inconvenient to run because they require teuthology (and therefore
require built packages, locked nodes, etc). Most of them don't actually
require anything beyond what you already have in a vstart cluster, so
I've adapted them to optionally run that way.
The idea is that we can iterate a lot faster when writing new tests (one
less excuse not to write them) and get better use out of the tests when
debugging things and testing fixes. teuthology is fine for mass-running
the nightlies etc, but it's overkill for testing individual bits of
MDS/client functionality.
The code is currently on the wip-vstart-runner ceph-qa-suite branch, and
the two magic commands are:
1. Start a vstart cluster with a couple of MDSs, as your normal user:
$ make -j4 rados ceph-fuse ceph-mds ceph-mon ceph-osd cephfs-data-scan
cephfs-journal-tool cephfs-table-tool && ./stop.sh ; rm -rf out dev ;
MDS=2 OSD=3 MON=1 ./vstart.sh -d -n
2. Invoke the test runner, as root (replace paths, test name as
appropriate. Leave of test name to run everything):
#
PYTHONPATH=/home/jspray/git/teuthology/:/home/jspray/git/ceph-qa-suite/
python /home/jspray/git/ceph-qa-suite/tasks/cephfs/vstart_runner.py
tasks.cephfs.test_strays.TestStrays.test_migration_on_shutdown
test_migration_on_shutdown (tasks.cephfs.test_strays.TestStrays) ... ok
----------------------------------------------------------------------
Ran 1 test in 121.982s
OK
^^^ see! two minutes, and no waiting for gitbuilders!
The main caveat here is that it needs to run as root in order to
mount/unmount things, which is a little scary. My plan is to split it
out into a little root service for doing mount operations, and then let
the main test part run as a normal user and call out to the mounter
service when needed.
Cheers,
John
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