[PATCH v5 0/10] fstests: add test coverage for cloned filesystem ids

[Anand Jain <asj@kernel.org>]

v5:
  XFS supports metadata_uuid, I converted patch 10/10 to a generic
   test. To do this, I moved the in-test helper to common/rc as
   `pre_clone_tune_uuid()`.

  I also verified fanotifywait with SELinux in enforcing mode and
    fixed patch 4/10.

v4:
  https://lore.kernel.org/fstests/cover.1777357320.git.asj@kernel.org

v3:
  https://lore.kernel.org/fstests/cover.1777281778.git.asj@kernel.org

v2:
  https://lore.kernel.org/fstests/cover.1774090817.git.asj@kernel.org

v1:
  https://lore.kernel.org/fstests/cover.1772095513.git.asj@kernel.org

This series adds fstests infrastructure and test cases to verify correct
filesystem identity when a filesystem is cloned (block-level copy).
Test covers inotify, fanotify, f_fsid, libblkid, IMA, exportfs file handles
and libblkid tools verify with metadata_uuid.
  New helpers:
  - _mkfs_scratch_sized_clone() helper to create a cloned filesystem
  - _clone_mount_option() helper to apply per-filesystem clone mount options
  - pre_clone_tune_uuid() changes the UUID before the clone

  New tests:
  - inotify and fanotify events are isolated between cloned filesystems
  - f_fsid is unique across cloned filesystem instances
  - libblkid correctly resolves duplicate UUIDs to distinct devices
    with and without metadata_uuid
  - IMA distinct identity for each cloned filesystem
  - exportfs file handles resolve correctly on cloned filesystems

Kernel Patches:
  Requires Btrfs kernel patches for all tests to pass.
   [1] https://lore.kernel.org/linux-btrfs/cover.1777281686.git.asj@kernel.org

Anand Jain (10):
  fstests: add _loop_image_create_clone() helper
  fstests: add _clone_mount_option() helper
  fstests: add test for inotify isolation on cloned devices
  fstests: verify fanotify isolation on cloned filesystems
  fstests: verify f_fsid for cloned filesystems
  fstests: verify libblkid resolution of duplicate UUIDs
  fstests: verify IMA isolation on cloned filesystems
  fstests: verify exportfs file handles on cloned filesystems
  fstests: add pre_clone_tune_uuid() healper
  fstests: test UUID consistency for clones with metadata_uuid

 common/config         |   2 +
 common/rc             |  84 ++++++++++++++++++++++++++++
 tests/generic/800     |  89 ++++++++++++++++++++++++++++++
 tests/generic/800.out |   7 +++
 tests/generic/801     | 125 ++++++++++++++++++++++++++++++++++++++++++
 tests/generic/801.out |   7 +++
 tests/generic/802     |  62 +++++++++++++++++++++
 tests/generic/802.out |   7 +++
 tests/generic/803     |  76 +++++++++++++++++++++++++
 tests/generic/803.out |  19 +++++++
 tests/generic/804     | 103 ++++++++++++++++++++++++++++++++++
 tests/generic/804.out |  10 ++++
 tests/generic/805     |  73 ++++++++++++++++++++++++
 tests/generic/805.out |   2 +
 tests/generic/806     |  78 ++++++++++++++++++++++++++
 tests/generic/806.out |  19 +++++++
 16 files changed, 763 insertions(+)
 create mode 100644 tests/generic/800
 create mode 100644 tests/generic/800.out
 create mode 100644 tests/generic/801
 create mode 100644 tests/generic/801.out
 create mode 100644 tests/generic/802
 create mode 100644 tests/generic/802.out
 create mode 100644 tests/generic/803
 create mode 100644 tests/generic/803.out
 create mode 100644 tests/generic/804
 create mode 100644 tests/generic/804.out
 create mode 100644 tests/generic/805
 create mode 100644 tests/generic/805.out
 create mode 100644 tests/generic/806
 create mode 100644 tests/generic/806.out

-- 
2.43.0