{
  "_format": "v2",
  "_doc": "ext4-win-driver matrix work list. See docs/test-harness.md. Each scenario name is unique. status starts at 'pending'; agents transition via scripts/claim-scenario.sh. Schema per scenario: image (file under EXT4_TEST_DISKS), mount_args (extra argv after `mount <image> --drive X:`), operations[] (typed verb list, see run-scenario.ps1), post_verify (optional 'fsck-ext4-strict' hook). Hashes captured from ext4 CLI on macOS against the canonical test images at /Volumes/sdcard256gb/projects/rust-fs-ext4/test-disks/.",
  "scenarios": {
    "basic-ro-list": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "v2 pilot \u2014 same as basic-ro-list but expressed as a v2 recipe of host-side `verify-ls` ops. Runs on Mac via scripts/verify-ls.sh. First migrated scenario; lives alongside the v1 form during transition. Once v2 dispatch is wired into run-tests.sh and the rest of the matrix is migrated, this replaces basic-ro-list outright.",
      "recipe": [
        {
          "op": "verify-ls",
          "path": "/",
          "expect_args": "'--expect-name' '.' '--expect-name' '..' '--expect-name' 'link.txt' '--expect-name' 'lost+found' '--expect-name' 'subdir' '--expect-name' 'test.txt'"
        },
        {
          "op": "verify-ls",
          "path": "/subdir",
          "expect_args": "'--expect-name' '.' '--expect-name' '..' '--expect-name' 'nested.txt'"
        }
      ]
    },
    "basic-ro-cat": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "Verifies read content matches sha256 on a small inline-extent file plus a nested file.",
      "recipe": [
        {
          "op": "verify-stat",
          "path": "/test.txt",
          "expect_args": "'--expect-size' '16' '--expect-mode' '0o644'"
        },
        {
          "op": "verify-cat",
          "path": "/test.txt",
          "expect_args": "'--expect-size' '16' '--expect-sha256' '8ce9a8091ad255e6be4b7e9a48f324aea35eb6d9e552628cc139598d97779dee'"
        },
        {
          "op": "verify-cat",
          "path": "/subdir/nested.txt",
          "expect_args": "'--expect-size' '7' '--expect-sha256' '370a8c04b8a65bb4494275eec227f1b694db04c76da6b0b8ae88ed1ab19790a3'"
        }
      ]
    },
    "basic-rw-write-readback": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "Smallest end-to-end RW round-trip: create file via mounted drive, read it back via same mount. fsck-ext4-strict is requested; for v1 the actual fsck runs Mac-side after diag pull (see TODO in run-scenario.ps1 stage E).",
      "recipe": [
        {
          "op": "ship-to-vm",
          "src": "{image_dir}/ext4-basic.img",
          "dest": "{vm.workdir}/ext4-basic.img"
        },
        {
          "op": "win-write",
          "path": "/new.txt",
          "content": "hello from windows",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "extra": "__none__"
        },
        {
          "op": "win-cat-via-mount",
          "path": "/new.txt",
          "expect_content": "hello from windows",
          "expect_size": "18",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "expect_sha256": "__none__",
          "extra": "__none__"
        }
      ]
    },
    "basic-rw-mkdir-touch": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "mkdir + create + readdir on the new dir. Catches issues with directory-block linkage on RW.",
      "recipe": [
        {
          "op": "ship-to-vm",
          "src": "{image_dir}/ext4-basic.img",
          "dest": "{vm.workdir}/ext4-basic.img"
        },
        {
          "op": "win-mkdir",
          "path": "/freshdir",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "extra": "__none__"
        },
        {
          "op": "win-write",
          "path": "/freshdir/inside.txt",
          "content": "nested write",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "extra": "__none__"
        },
        {
          "op": "win-ls-via-mount",
          "path": "/freshdir",
          "expect_names_csv": ".,..,inside.txt",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "expect_count": "__none__",
          "extra": "__none__"
        },
        {
          "op": "win-cat-via-mount",
          "path": "/freshdir/inside.txt",
          "expect_content": "nested write",
          "expect_size": "12",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "expect_sha256": "__none__",
          "extra": "__none__"
        }
      ]
    },
    "htree-listing": {
      "status": "pending",
      "image": "ext4-htree.img",
      "_attempts": [],
      "_notes": "Htree-indexed directory with 256 files + . + .. = 258 entries. Validates the htree iterator end-to-end.",
      "recipe": [
        {
          "op": "verify-ls",
          "path": "/",
          "expect_args": "'--expect-name' '.' '--expect-name' '..' '--expect-name' 'bigdir' '--expect-name' 'lost+found' '--expect-name' 'small.txt'"
        },
        {
          "op": "verify-ls",
          "path": "/bigdir",
          "expect_args": "'--expect-count' '258'"
        }
      ]
    },
    "deep-extents-cat": {
      "status": "pending",
      "image": "ext4-deep-extents.img",
      "_attempts": [],
      "_notes": "Files backed by deeper extent trees. Hashes the read against the macOS-captured reference.",
      "recipe": [
        {
          "op": "verify-ls",
          "path": "/",
          "expect_args": "'--expect-name' '.' '--expect-name' '..' '--expect-name' 'dense.txt' '--expect-name' 'lost+found' '--expect-name' 'sparse.bin'"
        },
        {
          "op": "verify-stat",
          "path": "/dense.txt",
          "expect_args": "'--expect-size' '13'"
        },
        {
          "op": "verify-cat",
          "path": "/dense.txt",
          "expect_args": "'--expect-size' '13' '--expect-sha256' '48b29839ecd2a7f7da1326b867961ca050e46fa4035a5f1c7eee28b401646650'"
        }
      ]
    },
    "inline-data-cat": {
      "status": "pending",
      "image": "ext4-inline.img",
      "_attempts": [],
      "_notes": "Inline-data feature exercise. tiny.txt fits inside the inode.",
      "recipe": [
        {
          "op": "verify-ls",
          "path": "/",
          "expect_args": "'--expect-name' '.' '--expect-name' '..' '--expect-name' 'lost+found' '--expect-name' 'medium.txt' '--expect-name' 'symlink' '--expect-name' 'tiny.txt'"
        },
        {
          "op": "verify-cat",
          "path": "/tiny.txt",
          "expect_args": "'--expect-size' '12' '--expect-sha256' '4fa141db5636666c4ba3402bcb80367f847a92174fce57f2b92e912af4411566'"
        }
      ]
    },
    "xattr-getxattr": {
      "status": "blocked-needs-getxattr-cli",
      "image": "ext4-xattr.img",
      "_attempts": [],
      "_notes": "Cannot fully exercise xattrs until ext4.exe grows a `getxattr` subcommand (or the WinFsp adapter exposes xattrs as Windows EAs / ADS). The ls-only operations[] above is a stub so the scenario shape is documented; actual unblock is to add a `getxattr` op type + CLI subcommand. Track in docs/test-harness.md.",
      "recipe": [
        {
          "op": "verify-ls",
          "path": "/",
          "expect_args": "'--expect-name' '.' '--expect-name' '..' '--expect-name' 'lost+found' '--expect-name' 'plain.txt' '--expect-name' 'tagged.txt' '--expect-name' 'tagged_dir'"
        }
      ]
    },
    "whole-disk-with-part": {
      "status": "pending",
      "image": "ext4-whole-disk.img",
      "_attempts": [],
      "_notes": "Whole-disk image is built by fixtures/build-whole-disk.py \u2014 wraps ext4-basic.img in a GPT layout with one Linux-fs partition starting at LBA 2048.",
      "recipe": [
        {
          "op": "verify-ls",
          "path": "/",
          "expect_args": "'--part' '1'"
        }
      ]
    },
    "basic-stat-test-txt": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "Stat shape check on /test.txt via the templated `stat` op. expect_stdout_contains substrings span size/mode/file_type so any drift in stat formatting OR the underlying inode is caught. Capture: ./target/release/ext4 stat ../rust-fs-ext4/test-disks/ext4-basic.img /test.txt",
      "recipe": [
        {
          "op": "verify-stat",
          "path": "/test.txt",
          "expect_args": "'--expect-stdout-contains' 'size:        16'"
        },
        {
          "op": "verify-stat",
          "path": "/test.txt",
          "expect_args": "'--expect-stdout-contains' 'mode:        0o644'"
        },
        {
          "op": "verify-stat",
          "path": "/test.txt",
          "expect_args": "'--expect-stdout-contains' 'file_type:   1'"
        }
      ]
    },
    "basic-stat-symlink": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "Symlink coverage. The CLI's `cat` does NOT dereference symlinks (errors with 'not a regular file'); we therefore exercise the link via `stat` instead \u2014 file_type 7 = ext4 symlink, size 8 = strlen(\"test.txt\"). Capture: ./target/release/ext4 stat ../rust-fs-ext4/test-disks/ext4-basic.img /link.txt",
      "recipe": [
        {
          "op": "verify-stat",
          "path": "/link.txt",
          "expect_args": "'--expect-stdout-contains' 'file_type:   7'"
        },
        {
          "op": "verify-stat",
          "path": "/link.txt",
          "expect_args": "'--expect-stdout-contains' 'size:        8'"
        }
      ]
    },
    "basic-tree-hash": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "Recursive tree shape pinned via stdout sha256. ext4 CLI emits LF-only line endings on every platform (Rust println! does not translate on Windows), so the hash is portable. Capture: ./target/release/ext4 tree ../rust-fs-ext4/test-disks/ext4-basic.img | shasum -a 256",
      "recipe": [
        {
          "op": "verify-tree",
          "expect_args": "'--expect-stdout-sha256' '5cec65ca5ab421cabac1a37a17bbead0df7093f94e8c83eebaa51dcac64218a2'"
        }
      ]
    },
    "basic-info-volume": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "Volume-level smoke. Asserts a stable substring (block_size + inode_size) so superblock decoding regressions trip a verdict. Requires the new `info` template added to harness.toml. Capture: ./target/release/ext4 info ../rust-fs-ext4/test-disks/ext4-basic.img",
      "recipe": [
        {
          "op": "verify-info",
          "expect_args": "'--expect-stdout-contains' 'block_size:     4096'"
        },
        {
          "op": "verify-info",
          "expect_args": "'--expect-stdout-contains' 'inode_size:     256'"
        },
        {
          "op": "verify-info",
          "expect_args": "'--expect-stdout-contains' 'label:          \"testvolume\"'"
        }
      ]
    },
    "basic-parts-no-table": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "Negative path: ext4-basic.img is a bare filesystem with no MBR/GPT. `parts` must exit non-zero. The error text goes to stderr (anyhow), so we assert exit code only. Capture: ./target/release/ext4 parts ../rust-fs-ext4/test-disks/ext4-basic.img ; echo $?  -> 1",
      "recipe": [
        {
          "op": "verify-parts-fails",
          "expect_args": ""
        }
      ]
    },
    "htree-listing-hash": {
      "status": "pending",
      "image": "ext4-htree.img",
      "_attempts": [],
      "_notes": "Hash the bigdir listing (258 entries). Beats expect_count alone \u2014 drift in entry ordering or any single name shifts the hash. Capture: ./target/release/ext4 ls ../rust-fs-ext4/test-disks/ext4-htree.img /bigdir | shasum -a 256",
      "recipe": [
        {
          "op": "verify-ls",
          "path": "/bigdir",
          "expect_args": "'--expect-stdout-sha256' 'eecb5943cd327c6e4f94bbc8a0f0b27738ced951f4cb3b9235ae37a7313f70da'"
        }
      ]
    },
    "deep-extents-stat": {
      "status": "pending",
      "image": "ext4-deep-extents.img",
      "_attempts": [],
      "_notes": "Verify the sparse.bin file under deeper extent trees: 16 MiB logical size, regular-file type. Pairs with deep-extents-cat (which validates dense.txt content). Capture: ./target/release/ext4 stat ../rust-fs-ext4/test-disks/ext4-deep-extents.img /sparse.bin",
      "recipe": [
        {
          "op": "verify-stat",
          "path": "/sparse.bin",
          "expect_args": "'--expect-stdout-contains' 'size:        16777216'"
        },
        {
          "op": "verify-stat",
          "path": "/sparse.bin",
          "expect_args": "'--expect-stdout-contains' 'file_type:   1'"
        }
      ]
    },
    "inline-data-stat": {
      "status": "pending",
      "image": "ext4-inline.img",
      "_attempts": [],
      "_notes": "Stat-side counterpart to inline-data-cat. tiny.txt is 12 bytes ('tiny inline\\n') \u2014 small enough to live in the inode. medium.txt overflows inline and falls back to extents. Capture: ./target/release/ext4 stat ../rust-fs-ext4/test-disks/ext4-inline.img /tiny.txt ; ./target/release/ext4 stat ../rust-fs-ext4/test-disks/ext4-inline.img /medium.txt",
      "recipe": [
        {
          "op": "verify-stat",
          "path": "/tiny.txt",
          "expect_args": "'--expect-stdout-contains' 'size:        12'"
        },
        {
          "op": "verify-stat",
          "path": "/medium.txt",
          "expect_args": "'--expect-stdout-contains' 'size:        100'"
        }
      ]
    },
    "xattr-cat-content": {
      "status": "pending",
      "image": "ext4-xattr.img",
      "_attempts": [],
      "_notes": "Until the `getxattr` CLI exists (see xattr-getxattr scenario), at least confirm files in an xattr-tagged image still read back correctly via templated cat. tagged.txt body is 'has xattrs\\n' (11 bytes). Capture: ./target/release/ext4 cat ../rust-fs-ext4/test-disks/ext4-xattr.img /tagged.txt | shasum -a 256",
      "recipe": [
        {
          "op": "verify-cat",
          "path": "/tagged.txt",
          "expect_args": "'--expect-stdout-sha256' '211681a64dfd209d01a997a527c1706d50945fa2559c1caa289dbb2c1517ebe1'"
        }
      ]
    },
    "whole-disk-parts": {
      "status": "pending",
      "image": "ext4-whole-disk.img",
      "_attempts": [],
      "_notes": "Read the GPT directly (no mount, no --part). One Linux-fs partition at LBA 2048, 32768 sectors. Capture: ./target/release/ext4 parts ../rust-fs-ext4/test-disks/ext4-whole-disk.img",
      "recipe": [
        {
          "op": "verify-parts",
          "expect_args": "'--expect-stdout-contains' 'GPT:linux'"
        },
        {
          "op": "verify-parts",
          "expect_args": "'--expect-stdout-contains' '2048'"
        }
      ]
    },
    "rw-rename": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "RW rename round-trip via the harness's builtin ops: write -> rename -> cat_via_mount. Catches dirent unlink+relink in the parent dir. Capture: content is harness-supplied; size/sha computed from 'rename payload' (15 bytes).",
      "recipe": [
        {
          "op": "ship-to-vm",
          "src": "{image_dir}/ext4-basic.img",
          "dest": "{vm.workdir}/ext4-basic.img"
        },
        {
          "op": "win-write",
          "path": "/before.txt",
          "content": "rename me",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "extra": "__none__"
        },
        {
          "op": "win-rename",
          "from": "/before.txt",
          "to": "/after.txt",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "extra": "__none__"
        },
        {
          "op": "win-cat-via-mount",
          "path": "/after.txt",
          "expect_content": "rename me",
          "expect_size": "9",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "expect_sha256": "__none__",
          "extra": "__none__"
        }
      ]
    },
    "rw-mkdir-rmdir": {
      "status": "blocked-rmdir-via-mount-driver-bug",
      "image": "ext4-basic.img",
      "_attempts": [
        {
          "session": "v2-phase-b-migration",
          "iter": "iter1",
          "hypothesis": "v2 self-contained mount-do-unmount has timing issue around rmdir",
          "result": "Disproved. Manual probe shows Get-ChildItem sees scratch-dir but Remove-Item fails with 'system cannot find the file specified'. Driver-side rmdir-via-mount bug, not migration-related. Surfaced by Phase B validation; track in driver issues."
        }
      ],
      "_notes": "mkdir/rmdir lifecycle. After rmdir the templated `ls /` must NOT include scratch \u2014 expect_names is the post-state of the root after rollback, equal to the original basic-ro-list expectation. Captured directly from ./target/release/ext4 ls ../rust-fs-ext4/test-disks/ext4-basic.img /",
      "recipe": [
        {
          "op": "ship-to-vm",
          "src": "{image_dir}/ext4-basic.img",
          "dest": "{vm.workdir}/ext4-basic.img"
        },
        {
          "op": "win-mkdir",
          "path": "/scratch-dir",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "extra": "__none__"
        },
        {
          "op": "win-rmdir",
          "path": "/scratch-dir",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "extra": "__none__"
        },
        {
          "op": "win-ls-via-mount",
          "path": "/",
          "expect_names_csv": ".,..,link.txt,lost+found,subdir,test.txt",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "expect_count": "__none__",
          "extra": "__none__"
        }
      ]
    },
    "rw-overwrite": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "Overwrite an existing file (test.txt, originally 16 bytes 'hello from ext4\\n') with new shorter content. Validates truncate + rewrite path. Payload 'overwritten' = 11 bytes. sha256 captured via: printf 'overwritten' | shasum -a 256 -> fb428d788e6efaec29dc4a9b3d0b3cf3d2295eb7ffc30f111ac11c4af1dfc118",
      "recipe": [
        {
          "op": "ship-to-vm",
          "src": "{image_dir}/ext4-basic.img",
          "dest": "{vm.workdir}/ext4-basic.img"
        },
        {
          "op": "win-write",
          "path": "/test.txt",
          "content": "OVERWRITE",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "extra": "__none__"
        },
        {
          "op": "win-cat-via-mount",
          "path": "/test.txt",
          "expect_content": "OVERWRITE",
          "expect_size": "9",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "expect_sha256": "__none__",
          "extra": "__none__"
        }
      ]
    },
    "rw-unlink": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "Create + unlink. After unlink, ls / must match the original 6-entry root (i.e. doomed.txt is gone). Catches inode-leak / dirent-unlink regressions in one shot.",
      "recipe": [
        {
          "op": "ship-to-vm",
          "src": "{image_dir}/ext4-basic.img",
          "dest": "{vm.workdir}/ext4-basic.img"
        },
        {
          "op": "win-write",
          "path": "/condemned.txt",
          "content": "soon-to-be-removed",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "extra": "__none__"
        },
        {
          "op": "win-unlink",
          "path": "/condemned.txt",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "extra": "__none__"
        },
        {
          "op": "win-ls-via-mount",
          "path": "/",
          "expect_names_csv": ".,..,link.txt,lost+found,subdir,test.txt",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "expect_count": "__none__",
          "extra": "__none__"
        }
      ]
    },
    "rw-write-then-readback-via-cli": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "Marker scenario for the future post_verify hook (see docs/post-verify-hook.md). Today: write via mount, read back via mount inside the same scenario. Tomorrow: post_verify re-mounts the image RO under the CLI to confirm on-disk durability after the WinFsp host exits. Until then, this scenario covers the in-mount round-trip; the post_verify shape lives in scenario `audit-post-verify-marker` below.",
      "recipe": [
        {
          "op": "ship-to-vm",
          "src": "{image_dir}/ext4-basic.img",
          "dest": "{vm.workdir}/ext4-basic.img"
        },
        {
          "op": "win-write",
          "path": "/cli-readback.txt",
          "content": "via-cli readback",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "extra": "__none__"
        },
        {
          "op": "win-cat-via-mount",
          "path": "/cli-readback.txt",
          "expect_content": "via-cli readback",
          "expect_size": "16",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "expect_sha256": "__none__",
          "extra": "__none__"
        }
      ]
    },
    "watch-volume-arrival-marker": {
      "status": "blocked-needs-event-injection-harness",
      "image": "",
      "mount_args": [],
      "_attempts": [],
      "_notes": "Placeholder for `ext4 watch` coverage. The watch subcommand reacts to Windows volume-arrival WMI events; the matrix model has no way to inject one. Unblock requires either (a) a helper that uses VHD attach/detach to synthesize real arrival events on the test VM, or (b) refactoring watch.rs to expose its event handler as a callable function the harness can drive directly. Until then, manual smoke-testing on the VM is the only path."
    },
    "installer-msi-marker": {
      "status": "blocked-needs-msi-test-runner",
      "image": "",
      "mount_args": [],
      "_attempts": [],
      "_notes": "Placeholder for installer/Bundle.wxs coverage. MSI install + uninstall + right-click verb registration is Windows-only and mutates global state (Program Files, registry, ProgIDs). Unblock requires a sandboxed Windows VM snapshot the harness can revert between runs. Out of scope for the current foreground-mount-driven matrix."
    },
    "audit-post-verify-marker": {
      "status": "pending",
      "image": "ext4-basic.img",
      "_attempts": [],
      "_notes": "Exercises the post_verify hook explicitly. The default [post_verify] in harness.toml audits every passing scenario; this one is here as a self-documenting record of the contract \u2014 write content via mount, expect cat to round-trip, then audit confirms the RW path didn't break invariants.",
      "post_verify": {
        "command": "{binary} audit {image}",
        "expect_exit": 0
      },
      "recipe": [
        {
          "op": "ship-to-vm",
          "src": "{image_dir}/ext4-basic.img",
          "dest": "{vm.workdir}/ext4-basic.img"
        },
        {
          "op": "win-write",
          "path": "/audit-marker.txt",
          "content": "audit me",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "extra": "__none__"
        },
        {
          "op": "win-cat-via-mount",
          "path": "/audit-marker.txt",
          "expect_content": "audit me",
          "expect_size": "8",
          "image_path": "{vm.workdir}/ext4-basic.img",
          "drive": "Z",
          "rw_flag": "--rw",
          "expect_sha256": "__none__",
          "extra": "__none__"
        }
      ]
    }
  }
}