+cc Patrick for reftable
On Tue, Mar 12, 2024 at 11:10:29AM -0400, Chuck Lever wrote:
> Unit test t0032 fails when run on an NFS mount:
>
> [vagrant@cel t]$ ./t0032-reftable-unittest.sh
> not ok 1 - unittests
> #
> # TMPDIR=$(pwd) && export TMPDIR &&
> # test-tool reftable
> #
> # failed 1 among 1 test(s)
> 1..1
The output for this test script is particularly unhelpful because it's
not using our test harness at all, but just running a bunch of internal
tests using a single program.
Running with "-v" should give more details about what's failing.
I set up a basic loopback server like:
mkdir /mnt/{server,client}
exportfs -o rw,sync 127.0.0.1:/mnt/server
mount -t nfs 127.0.0.1:/mnt/server /mnt/client
and then ran:
./t0032-reftable-unittest.sh --root=/mnt/client -v
Looks like it fails at:
running test_reftable_stack_compaction_concurrent_clean
reftable/stack_test.c: 1063: failed assertion count_dir_entries(dir) == 2
Aborted
> v2.43.2 seems to work OK.
For me, too. Bisecting shows the problem appearing in 4f36b8597c
(reftable/stack: fix race in up-to-date check, 2024-01-18).
-Peff
PS That test seems to run ~20x slower on NFS versus directly on ext4.
I'd expect a little overhead, but that's quite a bit.
