Dar throwing errors, Too many open files

akya · 06-30-2016, 08:53 AM

I use dar in shell scripts to backup my stuff but recently I have started getting errors when backing up large folders. For ex:

Code:

Cannot read directory contents: /media/Data/Router ASUS RT-N12 LX : Error opening directory: /media/Data/Router ASUS RT-N12 LX : Too many open files
Cannot read directory contents: /media/Data/Textfiles : Error opening directory: /media/Data/Textfiles : Too many open files
Cannot read directory contents: /media/Data/Video_conversion : Error opening directory: /media/Data/Video_conversion : Too many open files
Cannot read directory contents: /media/Data/Website : Error opening directory: /media/Data/Website : Too many open files

Code:

Error while saving /media/Data/Design/Icons/IcoMoon/cc-zero.png: Cannot open file : Too many open files
Error while saving /media/Data/Design/Icons/IcoMoon/cc.png: Cannot open file : Too many open files
Error while saving /media/Data/Design/Icons/IcoMoon/ccw.png: Cannot open file : Too many open files

I am using Fedora 24, and dar 2.5.2

Guttorm · 06-30-2016, 08:59 AM

Hi

That error message is not really from dar, but from the kernel. But of course, it could be dar is having too many files open at once. You can increase the limit:

http://www.cyberciti.biz/faq/linux-i...of-open-files/

akya · 06-30-2016, 10:05 AM

Quote:

Originally Posted by Guttorm

Hi

That error message is not really from dar, but from the kernel. But of course, it could be dar is having too many files open at once. You can increase the limit:

http://www.cyberciti.biz/faq/linux-i...of-open-files/

Thanks, I had tried looking about the limit, but
cat /proc/sys/fs/file-maxc

shows my limit is at 2097152, which is already high enough?

akya · 06-30-2016, 11:16 PM

Ok I added this to limits.conf
* soft nofile 409600
* hard nofile 1024000
root soft nofile 409600
root hard nofile 1024000

Now If I backup with dar under root, the backup completes as it should. If I check limits using su, the new limits are in place. But limits for my current user are the old ones. Unable to set limits using terminal either.