Calle Wilund b48255a4cd db::commitlog: Only zero disk blocks not already allocated in segment ...

Fixes #5891
Refs #5899

When creating segments with the o_dsync option active, we write max_size
zeros to disk, to ensure actual disk blocks are allocated.

However, if we recycle a segment, we should, when not actually creating
a new file, check the existing size on disk, and only zero any blocks
not already allocated (i.e. if recycled file was smaller than max_size,
due to segement truncation on close).

test: unit
Message-Id: <20200226121601.15347-1-calle@scylladb.com>

2020-03-05 13:27:08 +01:00

87 KiB

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