Move QCOW2 format implementation into a structured directory layout:
qcow/ -> formats/qcow/internal/ (filenames unchanged)
qcow_disk.rs -> formats/qcow/mod.rs (QcowDisk)
qcow_sync.rs -> formats/qcow/worker/sync.rs (QcowSync)
qcow_async.rs -> formats/qcow/worker/async_uring.rs (QcowAsync)
qcow_common.rs -> formats/qcow/common.rs
All internal cross references continue to resolve through
re-exports in lib.rs: formats::qcow::internal as qcow,
formats::qcow as qcow_disk, and
formats::qcow::common as qcow_common.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Move VHDX format implementation into a structured directory layout:
vhdx/mod.rs -> formats/vhdx/internal/mod.rs (Vhdx)
vhdx/vhdx_bat.rs -> formats/vhdx/internal/bat.rs
vhdx/vhdx_header.rs -> formats/vhdx/internal/header.rs
vhdx/vhdx_io.rs -> formats/vhdx/internal/io.rs
vhdx/vhdx_metadata.rs -> formats/vhdx/internal/metadata.rs
vhdx_sync.rs -> formats/vhdx/mod.rs (VhdxDisk)
Extract VhdxSync from vhdx_sync.rs into formats/vhdx/worker/sync.rs.
Drop the vhdx_ prefix from internal file names since the parent
directory already provides the namespace. Update all internal cross
references to use the new module paths. Re-export formats::vhdx as
vhdx_sync in lib.rs for backward compatibility.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Move VHD format implementation into a structured directory layout:
fixed_vhd.rs -> formats/vhd/internal/fixed.rs (FixedVhd)
fixed_vhd_disk.rs -> formats/vhd/mod.rs (VhdDisk)
vhd.rs -> formats/vhd/internal/footer.rs (VhdFooter)
fixed_vhd_sync.rs -> formats/vhd/worker/sync.rs (FixedVhdSync)
fixed_vhd_async.rs -> formats/vhd/worker/async_uring.rs (FixedVhdAsync)
Add #[allow(dead_code)] to VhdFooter struct and impl because the
module is now pub(crate) and the compiler can see that several
fields and getters are only exercised by unit tests. Re-export
formats::vhd as fixed_vhd_disk in lib.rs for backward
compatibility with external consumers.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Move raw format implementation into a structured directory layout:
raw_disk.rs -> formats/raw/mod.rs (RawDisk)
raw_sync.rs -> formats/raw/worker/sync.rs (RawSync)
raw_async.rs -> formats/raw/worker/async_uring.rs (RawAsync)
raw_async_aio.rs -> formats/raw/worker/async_aio.rs (RawAio)
raw_async_io_tests.rs -> formats/raw/worker/tests.rs
Update imports in fixed_vhd_sync.rs and fixed_vhd_async.rs to use
the new paths. Re-export formats::raw as raw_disk in lib.rs to
preserve the external API.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
FixedVhdDisk is the format level DiskFile wrapper for VHD images.
Rename it to VhdDisk to match the <Format>Disk convention used by
RawDisk, QcowDisk, and VhdxDisk. The Fixed prefix remains on the
workers (FixedVhdSync, FixedVhdAsync) since those are specific to
the fixed subformat.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Align with the <Format>Disk wrapper naming convention. VHDx
has a single on disk format so no variant suffix is needed.
The async backend will be added to VhdxDisk.
No functional change.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Update open_qcow2 to construct QcowDisk instead of choosing
between QcowDiskAsync and QcowDiskSync. The backend decision
is now made inside QcowDisk::create_async_io.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Update open_fixed_vhd to construct FixedVhdDisk instead of choosing
between FixedVhdDiskAsync and FixedVhdDiskSync. The io_uring decision
is now made inside FixedVhdDisk::create_async_io().
Remove FixedVhdDiskSync and FixedVhdDiskAsync DiskFile wrapper structs
from fixed_vhd_sync.rs and fixed_vhd_async.rs. Only the FixedVhdSync
and FixedVhdAsync AsyncIo worker structs remain in those files.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Update open_raw to construct RawDisk instead of choosing between
RawFileDisk, RawFileDiskSync and RawFileDiskAio. The backend decision
is now made inside RawDisk::create_async_io.
Remove the DiskFile wrapper structs from raw_sync.rs, raw_async.rs
and raw_async_aio.rs. Only the AsyncIo worker structs remain in those
files. Reduce their module visibility to pub(crate).
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Verify that open_disk() falls back to synchronous backend when both
io_uring and AIO are disabled, and that the returned disk reports
the correct logical size.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Create a minimal QCOW2 temp file via QcowFile::new() and verify
that open_disk() detects it as ImageType::Qcow2.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Verify that open_disk() detects a plain temporary file as RAW and
returns a working backend with synchronous fallback.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Verify that open_disk() returns BlockErrorKind::Io when the disk
image file does not exist.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Introduce block::factory with open_disk() as the single entry point
for opening disk images. It handles file opening, format detection,
async I/O probing, and backend construction.
Per format helpers (open_fixed_vhd, open_raw, open_qcow2, open_vhdx)
prefer io_uring over AIO over synchronous fallback. Warnings only
fire when a backend was eligible but its runtime probe failed, not
when the user intentionally disabled it.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
