Moving virtual and cache to elsewhere on Ubuntu

devtech8 · 12-09-2018, 01:37 AM

Am using Ubuntu 18 and was trying to use Calibre, but had a space issue once uploading some of my ebooks. Seems even though my actual files are on another folder in a different drive, the virtual library info gets put on my Linux boot drive and I am not finding a way to revise that. My boot drive is only 120gb and I need to be able to have this cache and virtual info such as metadata elsewhere. Can anyone assist please?

Thanks much.

theducks · 12-09-2018, 02:23 AM

A VL is in RAM. It is a subset image of the real library.
So the question is where your TMP and swap is.

kovidgoyal · 12-09-2018, 03:10 AM

Use CALIBRE_TEMP_DIR, as described here: https://manual.calibre-ebook.com/cus...ment-variables

Adoby · 12-09-2018, 05:11 AM

You should put the temp dir on the fastest HDD or even SSD if available. Also the swap partition or a swap file should be on the fastest drive.

You can also put the ~/.cache folder on the SSD if your home folder is on a slower drive. Read up on the use of links in Linux. It is even possible to put the calibre database and/or the format files on the SSD using links.

If your computer has plenty of RAM (>16GB) then you can even place the temp folder in RAM for the ultimate in fast drive. Linux has great support for this using tmpfs.

https://www.linux.com/learn/intro-to...ng-linux-links

12-09-2018, 01:37 AM	#1
devtech8 Enthusiast Posts: 30 Karma: 10 Join Date: Dec 2018 Device: Fire HD, phone, laptop	Moving virtual and cache to elsewhere on Ubuntu Am using Ubuntu 18 and was trying to use Calibre, but had a space issue once uploading some of my ebooks. Seems even though my actual files are on another folder in a different drive, the virtual library info gets put on my Linux boot drive and I am not finding a way to revise that. My boot drive is only 120gb and I need to be able to have this cache and virtual info such as metadata elsewhere. Can anyone assist please? Thanks much.

12-09-2018, 05:11 AM	#4
Adoby Handy Elephant Posts: 1,736 Karma: 26785668 Join Date: Dec 2009 Location: Southern Sweden, far out in the quiet woods Device: Thinkpad E595, Ubuntu Mate, Huawei Mediapad 5, Bouye Likebook Plus	You should put the temp dir on the fastest HDD or even SSD if available. Also the swap partition or a swap file should be on the fastest drive. You can also put the ~/.cache folder on the SSD if your home folder is on a slower drive. Read up on the use of links in Linux. It is even possible to put the calibre database and/or the format files on the SSD using links. If your computer has plenty of RAM (>16GB) then you can even place the temp folder in RAM for the ultimate in fast drive. Linux has great support for this using tmpfs. https://www.linux.com/learn/intro-to...ng-linux-links Last edited by Adoby; 12-09-2018 at 05:15 AM.

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12-09-2018, 02:23 AM	#2
theducks Well trained by Cats Posts: 29,778 Karma: 54830978 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	A VL is in RAM. It is a subset image of the real library. So the question is where your TMP and swap is.

12-09-2018, 03:10 AM	#3
kovidgoyal creator of calibre Posts: 43,839 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Use CALIBRE_TEMP_DIR, as described here: https://manual.calibre-ebook.com/cus...ment-variables