Package: manpages-dev
Version: 3.13-2
Severity: wishlist
File: /usr/share/man/man2/sync.2.gz
According to the standard specification (e.g., POSIX.1-2001), sync()
schedules the writes, but may return before the actual writing is done.
However, since version 1.3.20 Linux does actually wait. (This still
does not guarantee data integrity: modern disks have large caches.)
Also mention 'even some tiny 256 MB USB "disk on a key chain" are
still blinking, indicating writing is still going on, several seconds
after the command returns!'
What do people have to do these days to not worry about when to remove
devices or shutdown? alias sync='/bin/sync; sleep 10'?
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