Calibre Library corrupt

mitch13 · 09-23-2018, 09:59 PM

Hi,
My very large calibre library consisting of 11 sub-libraries has been running for a very long time. Now it is corrupted twice within a couple of days. The first time I used the rebuild option which finished OK. Later that day I ran the database check and after the first run it was great. The second run (authors/Title etc also ran OK with a few books to correct - nothing major.
Just an hour ago as I tried to load Calibre the attached message came up offering to rebuild the library but could strike problems or to create a new blank library (by this I assume that the 'corrupt' library is left in place).
At this stage I do not know which option to take. The rebuild may work but take forever before finding out and the second option I do not really want as I have a very large number of books in my library accumulated over many many years.
Any suggestions how I can recover my library. I usually back up my library regularly but Murphy's Law tells me I have not done this for a couple of weeks! I am current backing up what I have library by library.

mitch13

theducks · 09-23-2018, 10:41 PM

Possibilities:
Hard drive trying to fail, CPUor case fan going bd (or just clogged fins), failing power supply
Anti Virus is interfering
You have the library folder on an ACTIVE cloud NAS sync

mitch13 · 09-24-2018, 08:17 AM

Thanks TheDucks,
This is on a 1Tb USB drive and has been no problem up until now. I will run checks on the drive which is running Calibre Portable (latest version) on the 1Tb drive plugged into a laptop. The laptop is only a few months old (HP).
Cloud NAS sync does not apply.

A strange problem I have now in trying to backup my whole Calibre library. I have copied all sub libraries and settings - everything except the main Calibre book library. I have tried Windows Explorer copy and Xplorer2 program and neither will copy the main library!
Any ideas?

Cheers
mitch13

PeterT · 09-24-2018, 08:31 AM

Try checking the Windows event log for hardware error messages

Sent from my Nexus 7 using Tapatalk

BetterRed · 09-24-2018, 09:25 AM

Quote:

Originally Posted by mitch13

I have tried Windows Explorer copy and Xplorer2 program and neither will copy the main library!

Do they give any indication as to why they won't copy the main library folder, such as - Access denied, Permission error, Folder is locked by another process ... etc.

Try unlocking the folder with Unlocker or something similar, you might have to reboot for it to take effect

BR

09-23-2018, 09:59 PM	#1
mitch13 Groupie Posts: 184 Karma: 10 Join Date: Jul 2008 Location: Queensland, Australia Device: Appraising the market	Calibre Library corrupt Hi, My very large calibre library consisting of 11 sub-libraries has been running for a very long time. Now it is corrupted twice within a couple of days. The first time I used the rebuild option which finished OK. Later that day I ran the database check and after the first run it was great. The second run (authors/Title etc also ran OK with a few books to correct - nothing major. Just an hour ago as I tried to load Calibre the attached message came up offering to rebuild the library but could strike problems or to create a new blank library (by this I assume that the 'corrupt' library is left in place). At this stage I do not know which option to take. The rebuild may work but take forever before finding out and the second option I do not really want as I have a very large number of books in my library accumulated over many many years. Any suggestions how I can recover my library. I usually back up my library regularly but Murphy's Law tells me I have not done this for a couple of weeks! I am current backing up what I have library by library. mitch13

09-24-2018, 08:17 AM	#3
mitch13 Groupie Posts: 184 Karma: 10 Join Date: Jul 2008 Location: Queensland, Australia Device: Appraising the market	Calibre corrupt library Thanks TheDucks, This is on a 1Tb USB drive and has been no problem up until now. I will run checks on the drive which is running Calibre Portable (latest version) on the 1Tb drive plugged into a laptop. The laptop is only a few months old (HP). Cloud NAS sync does not apply. A strange problem I have now in trying to backup my whole Calibre library. I have copied all sub libraries and settings - everything except the main Calibre book library. I have tried Windows Explorer copy and Xplorer2 program and neither will copy the main library! Any ideas? Cheers mitch13

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09-23-2018, 10:41 PM	#2
theducks Well trained by Cats Posts: 29,779 Karma: 54830978 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	Possibilities: Hard drive trying to fail, CPUor case fan going bd (or just clogged fins), failing power supply Anti Virus is interfering You have the library folder on an ACTIVE cloud NAS sync

09-24-2018, 08:31 AM	#4
PeterT Grand Sorcerer Posts: 12,155 Karma: 73448616 Join Date: Nov 2007 Location: Toronto Device: Nexus 7, Clara, Touch, Tolino EPOS	Try checking the Windows event log for hardware error messages Sent from my Nexus 7 using Tapatalk

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