What is the maximum number of subdirectories allowed in Ext4?

linux filesystems ext4
meawoppl picture meawoppl · Apr 1, 2014 · Viewed 7.4k times · Source

I am considering moving my ext3 partition to ext4 in order to overcome the 32000 subdirectory limit. I have seen two different numbers thrown around about the limits of ext4, both from reputable sources:

Limit of 64,000:

Unlimited:

What is the correct answer, and how can I determine the correct answer from the ext4 source?

Answer

JerryJJ picture JerryJJ · Apr 1, 2014

The limit is 64000. Until you enable the file system feature flag dir_nlink

http://man7.org/linux/man-pages/man5/ext4.5.html

http://www.ispexperts.com.np/?p=797

Related questions

How to shrink an ext4 partition without formatting it?

Recently i installed Ubuntu 13.04 and allocated 20 GB for it. The system got installed space less than 10 GB. Now, can i shrink it to 10 GB without formatting it? Thats to say, i don't want to have large empty space in the …

Read More
Why does Python give "OSError: [Errno 36] File name too long" for filename shorter than filesystem's limit?

The following code yields an unexpected exception: open("52bbe674cdc81d4140099b84fa69eea4249bcceee75bcbe4838d911ab076547cfdad3c1c5197752a98e5525fe76613dbe52dcdb1a9a397669babce0f101d010142cffa000000.csv", "w") OSError: [Errno 36] File name too long: …

Read More
Exploring Docker container's file system

I've noticed with docker that I need to understand what's happening inside a container or what files exist in there. One example is downloading images from the docker index - you don't have a clue what the image contains so …

Read More