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PendingReleaseNotes: add rbd compare-and-write notes

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Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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Ilya Dryomov 2022-08-12 13:55:01 +02:00
parent af96e6dae3
commit 4ddcb7ff92
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PendingReleaseNotes
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@ -46,6 +46,15 @@
* RGW: The beast frontend's HTTP access log line uses a new debug_rgw_access
configurable. This has the same defaults as debug_rgw, but can now be controlled
independently.
* RBD: The semantics of compare-and-write C++ API (`Image::compare_and_write`
and `Image::aio_compare_and_write` methods) now match those of C API. Both
compare and write steps operate only on `len` bytes even if the respective
buffers are larger. The previous behavior of comparing up to the size of
the compare buffer was prone to subtle breakage upon straddling a stripe
unit boundary.
* RBD: compare-and-write operation is no longer limited to 512-byte sectors.
Assuming proper alignment, it now allows operating on stripe units (4M by
default).
>=17.2.1