On Mon, Nov 18, 2024 at 10:13:23PM -0800, Christoph Hellwig wrote: > On Tue, Nov 19, 2024 at 12:45:05PM +1100, Dave Chinner wrote: > > Question for you: Does your $here directory contain a .git subdir? > > > > One of the causes of long runtime for me has been that $here might > > only contain 30MB of files, but the .git subdir balloons to several > > hundred MB over time, resulting is really long runtimes because it's > > copying GBs of data from the .git subdir. > > Or the results/ directory when run in a persistent test VM like the > one for quick runs on my laptop. I currently need to persistently > purge that for just this test. > > > > > I have this patch in my tree: > > > > --- a/tests/generic/251 > > +++ b/tests/generic/251 > > @@ -175,9 +175,12 @@ nproc=20 > > # Copy $here to the scratch fs and make coipes of the replica. The fstests > > # output (and hence $seqres.full) could be in $here, so we need to snapshot > > # $here before computing file checksums. > > +# > > +# $here/* as the files to copy so we avoid any .git directory that might be > > +# much, much larger than the rest of the fstests source tree we are copying. > > content=$SCRATCH_MNT/orig > > mkdir -p $content > > -cp -axT $here/ $content/ > > +cp -ax $here/* $content/ > > Maybe we just need a way to generate more predictable file system > content? How about running fsstress for ~50000ops or so, to generate some test files and directory tree? --D
