08-01-2014, 03:59 PM | #16 | |
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Having lost my electronic library in the past (back when it was text, html or pdb) due to drive failure and unreadable backup when my zip drives were not reliable and failed I became compulsive about backups. The problem with anything other than a full backup is the ability to restore quickly if there is a complete system failure and I like to rar it rather than just have a copy of the library because it is the library at that time so if a book turns up corrupted at a later date or if I somehow delete something in error I will be able to find it. It's purely a personal quirk. For me it is a case of thanking the gods of technology for cheap usb drives . |
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08-01-2014, 04:02 PM | #17 |
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Be careful about hardlinks. They do not make a copy. Instead the same physical file now has two names. If you open one name and change the file then the other sees the changes. If instead one name is deleted and then readded then the link is broken and you now have two copies.
The issue here is metadata.db. Hardlinks won't be broken when calibre opens and writes one of the names. If I misunderstood what you are saying, sorry about the spam. |
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08-01-2014, 05:07 PM | #18 | |
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08-01-2014, 07:07 PM | #19 |
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Wow, I appreciate the input here, but most of this is over my head. I have over 1000 books in my library. I plan to use the method described here to manage them: http://manual.calibre-ebook.com/sub_groups.html
So to back up both the books and the tag structure are you all saying I just have to backup the Calibre library in the My documents folder on my computer? The tags and such will just go along with that? I just plan to periodically put it on an external harddrive. |
08-01-2014, 07:15 PM | #20 | |
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08-01-2014, 08:01 PM | #21 | |
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OTOH How it looks, plugins and some non-library specific rules are in Preferences (the configuration folder) Backing Both allows a quick transfer to another system with only minor 'switch library' to take in account of user path changes. |
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08-01-2014, 09:11 PM | #22 |
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You'd probably use a DeLorean Copy. There are shell and command line utilities available
BR Last edited by BetterRed; 08-01-2014 at 09:14 PM. |
08-01-2014, 09:35 PM | #23 | |
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A folder that contains author folders, the author folders contain book folders.
And there maybe a file called metadata_db_prefs_backup.json. Together with the metadata.opf files in book folders this provides the means via which the database can be rebuilt if something goes wrong - which is a very rare event. You should backup the library folder in its entirety and restore it in its entirety. If you 'lose' an individual book then you have to import it back into the calibre via the Add process - which could be from a backup location. If you already have backup/restore processes and tools in place for other data - eg documents, photos, software, source code etc - then you should probably just include the calibre libraries into those processes. As I previously mention there's also the configuration data, which should also be backed up. BR Last edited by BetterRed; 08-01-2014 at 09:40 PM. |
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08-02-2014, 05:13 PM | #24 | |
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08-02-2014, 06:13 PM | #25 | |||
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BR |
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08-21-2014, 07:09 AM | #26 | |
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08-21-2014, 08:49 AM | #27 | |
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Last edited by cvlowe; 08-21-2014 at 08:56 AM. |
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08-21-2014, 09:43 AM | #28 | |
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I am smart enough to infer: General ??? Fiction < used when 'I' have not assigned a root topic tag (usually because I have so few in that area as to make that a necessity) I care less where (country/state) the Author lives or a raft of other 'garbage' tags. Do they write well , is how I choose books |
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08-26-2014, 08:00 PM | #29 | |
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08-26-2014, 08:14 PM | #30 | |
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I'm not sure about e..z's suggested usage of hardlinks and rsynch, maybe he can tell us if there are circumstances that the scripts do delete all the hard links for a given datastream. BR |
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