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Originally Posted by tomsem
The manual section you reference concerns issues with 'networked drives', in contrast to file syncing tool 'like DropBox' (OneDrive in this case). I'm not doing 'simultaneous access' scenario here, which calibre does not support. I use calibre on a single computer.
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1. OneDrive and other "cloud" solutions are a special (more dangerous/ less reliable than LAN shares) case of a networked drive.
2. It's not just about simultaneous access by two Calibre programs.
Calibre and many other programs only work reliably with "really" local drives (USB Mass Storage (but not MTP or USB Network) and SCSI and eSATA count as local drives).
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File presence should be transparent to calibre: it's the only way something like OneDrive can be at all functional.
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It's not actually really a local file. OneDrive is an even bigger illusion of a file than Windows Share mapped to a drive letter.
Only use "Cloud" storage explicitly with a file manager. Anything else is going to give grief eventually.
Quote:
Originally Posted by DNSB
Perhaps calibre expects it's files to be available where they are supposed to be stored and not removed at the whim of a cloud storage solution?
As you may have noticed over the years from messages posted by others, using a one way sync to backup your library works quite well. What you are trying to use is a two way sync which is almost always a path to a corrupt library. If you really think there is no chance of corruption, you are kidding yourself.
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All true. I use rsync to backup to my remote server, and also it needs to happen when calibre is closed.
OneDrive is using MS opaque i/o to a server of unknown location and security belonging to MS. It (and other services like Dropbox) are best suited to sharing a copy with another person when you don't have your own hosting. It's advantage and disadvantage compared to SFTP is the OS integration.