Bug #61442: rgw_d3n_datacache: Asynchronous IO writes are not tracked for failure - rgw - Ceph

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Bug #61442

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rgw_d3n_datacache: Asynchronous IO writes are not tracked for failure

Added by Vedansh Bhartia 12 months ago. Updated 12 months ago.

Status:

New

Priority:

Normal

Assignee:

Mark Kogan

Target version:

% Done:

Source:

Tags:

d3n

Backport:

pacific quincy reef

Regression:

Severity:

3 - minor

Reviewed:

Affected Versions:

ceph-qa-suite:

Pull request ID:

Crash signature (v1):

Crash signature (v2):

Description

D3nDataCache::put invokes an aio_write, and expects to get a callback to D3nDataCache::d3n_libaio_write_completion_cb when the write completes. However, according to the man page (https://www.man7.org/linux/man-pages/man3/aio_write.3.html), this callback is only invoked when the write succeeds. If the write fails, D3nDataCache never gets to know about it.
Additionally, when the write does complete, we do not check whether the number of bytes written was correct.