Re: [PATCH RFC] fstests: use MOUNT_OPTIONS to populate TEST_FS_MOUNT_OPTS if possible

[Christoph Hellwig <hch@infradead.org>]

On Fri, Jun 05, 2026 at 12:46:13AM +0800, Zorro Lang wrote:
> Right now, the biggest inconsistent issue is probably with those feature-probing
> helpers. They often check TEST_DIR to determine behaviors for SCRATCH_MNT. While
> this works fine for features unaffected by mount options, but we might should
> handle mount options related features (for TEST_DEV or SCRATCH_DEV) separately.

Yes, I've run into a lot of issues when TEST_DIR has more feature than
SCRATCH_DEV.  The problem is just that feature testing for scratch is
a bit annoying because we have to create a file system for it first.

It might make sense to catch some of the results, but then again we have
tests that override options for the scratch side so that this won't
apply.

I've been wanting to look into splitting the scratch tests up into those
that "just" format the file systems, and those testing very specific
corners cases using special options.  Especially as we should not have
to run the latter multiple times for different configurations.