Solving the ext3 latency problem
Posted Apr 14, 2009 18:09 UTC (Tue) by corbet
In reply to: Solving the ext3 latency problem
Parent article: Solving the ext3 latency problem
data=guarded sounds rather interesting, but I'm not sure I understand how it differs from data=ordered. In what situations could the result be different?
data=ordered forces all data to go out before the metadata is written; in practice, that forces data to be written within five seconds. data=guarded, as I understand it, delays the writing of certain metadata (the file size in particular) until the data has been written. The timing is looser, but it still keeps random junk from showing up within a file after a crash.
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