Hi all, This is a small patch set against the reflink/dedupe test cases in xfstests. The first patch is a rewrite of the tools to find the lowest vacant ID number and to move a test case. These two programs are useful for staging a lot of new tests at a high number and moving them to lower numbers when the maintainer wants to accept the new tests. The second patch fixes some reflink tests that didn't clean up after themselves. Patch 3 updates the golden output for the test that examines the results of feeding bad inputs to the two ioctls. The new error values are based on a discussion of how to react to bad file types on the mailing lists and the ongoing work to hoist the ioctls to the VFS level. Patches 4-5 fix some minor errors found while testing with different kernel config and block size options. Patch 6 introduces new tests to check the behavior of unaligned CoW, punch-while-CoWd, and ensures that passing len == 0 to reflink actually runs to EOF. Patch 7 introduces some XFS-specific ENOSPC testing, wherein we try to crash the filesystem by allocating all the blocks in an AG and then expanding the refcount and rmap btrees until the AG runs out of space. Patch 8 introduces checks that CoW works with a variety of different neighbor blocks -- delalloc, unwritten, hole, and regular. Patch 9 introduces checks for CoW when blocksize < pagesize. Patch 10 tries some large CoW operations to ensure that it works correctly. Patch 11 creates a 'dedupe' group for testing specifically dedupe functionality. If you're going to start using this mess, you probably ought to just pull from my github trees for kernel[1], xfsprogs[2], xfstests[3], xfs-docs[4], and man-pages[5]. They should just work with the btrfs that's in 4.4... and somewhat buggily with the 4.4 XFS patched with [1]. The relevant xfs_io support will be in xfsprogs 4.3 though it still needs a patch to fix len == 0 support. Probably easier just to grab [2] and build that. Comments and questions are, as always, welcome. --D [1] https://github.com/djwong/linux/tree/for-dave [2] https://github.com/djwong/xfsprogs/tree/for-dave [3] https://github.com/djwong/xfstests/tree/for-dave [4] https://github.com/djwong/xfs-documentation/tree/for-dave [5] https://github.com/djwong/man-pages/commits/for-mtk -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
