tentacle: bluestore/BlueFS: fix bytes_written_slow counter with aio_write#66355
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NitzanMordhai merged 1 commit intoceph:tentaclefrom Feb 8, 2026
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tentacle: bluestore/BlueFS: fix bytes_written_slow counter with aio_write#66355NitzanMordhai merged 1 commit intoceph:tentaclefrom
NitzanMordhai merged 1 commit intoceph:tentaclefrom
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The bytes_written_slow performance counter was incorrectly reporting 0 when using async I/O. When aio_write() is called with a bufferlist, it uses claim_append() to transfer ownership of the buffer to the aio structure, leaving the source bufferlist empty. Using t.length() after aio_write() returns 0 instead of the actual bytes written. Fix by using the pre-calculated x_len value which contains the actual write size and is not affected by the buffer ownership transfer. Fixes: https://tracker.ceph.com/issues/73735 Signed-off-by: chungfengz <chungfengz@synology.com> (cherry picked from commit 5aa5b03)
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ifed01
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Nov 21, 2025
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backport tracker: https://tracker.ceph.com/issues/73741
backport of #66147
parent tracker: https://tracker.ceph.com/issues/73735
this backport was staged using ceph-backport.sh version 16.0.0.6848
find the latest version at https://github.com/ceph/ceph/blob/main/src/script/ceph-backport.sh