[Python-Dev] Ext4 data loss

[Toshio Kuratomi]

Antoine Pitrou wrote:
> Steven D'Aprano <steve <at> pearwood.info> writes:
>> It depends on what you mean by "temporary".
>>
>> Applications like OpenOffice can sometimes recover from an application 
>> crash or even a systems crash and give you the opportunity to restore 
>> the temporary files that were left lying around.
> 
> For such files, you want deterministic naming in order to find them again, so
> you won't use the tempfile module...
> 
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.

-Toshio

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