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I think filesystems in kernel have automated tests, I know xfstests [1] exist, at least. And they exist exactly because filesystems bugs generally are critical:

by m45t3r 8y ago

I think filesystems in kernel have automated tests, I know xfstests [1] exist, at least. And they exist exactly because filesystems bugs generally are critical: a filesystems bug generally means that someone will lose data. [1]: different from what the name may suggest, xfstests is run in other filesystems too. Here is an example of xfstests ported to ZoL (ZFS on Linux): https://github.com/zfsonlinux/xfstests https://github.com/zfsonlinux/xfstests

notacoward 8y ago
Yes, xfstests exists. I've used it myself and it's actually pretty good for a suite that doesn't include error injection. But part of today's story is that xfstests wasn't being updated to cover the last several features that were added to XFS. The result is exactly the kind of brittleness that is characteristic of poorly tested software. Something else changed, and previously latent bugs started popping out of the rotten woodwork.