[Python-Dev] Ext4 data loss

"Martin v. Löwis" martin at v.loewis.de
Thu Mar 12 20:15:15 CET 2009

> Something that doesn't require deterministicly named tempfiles was Ted
> T'so's explanation linked to earlier.
> read data from important file
> modify data
> create tempfile
> write data to tempfile
> *sync tempfile to disk*
> mv tempfile to filename of important file
> The sync is necessary to ensure that the data is written to the disk
> before the old file overwrites the new filename.

You still wouldn't use the tempfile module in that case. Instead, you
would create a regular file, with the name base on the name of the
important file.


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