PresSTORE and the ctime file attribute on Windows
Posted by Sven Koester, Last modified by Andre Kuehnemund on 13 December 2012 12:38
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Unix systems and Macs use the ctime, also called the inode change time, to store the time a file's attributes were last changed. That ctime stamp is updated each time when for instance the owner or the posix access rights of a file change. PresSTORE Backup always honors a change to the file attributes. Sync Plan -> Additional Options -> Expert Settings the flag Compare source and target files by examining: ... Owner and/or protection changes ... is set. PresSTORE honors the archive bit and unsets it on the source and sets a time stamp on the same file in an alternate data stream (ADS). This has been done for two reasons:
This may cause as side effect that a changed file on Windows is saved twice in case PresSTORE cannot safely decide whether the file has been changed before or after being read (remember that file reading takes a time interval, during which the archive bit might be set again).
Please also see this very good blog article on this topic by Florian Bogner: | |
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