Maximum number of directories under XFS
 

Hi Guys,

First post!

I have already had look around and cannot find a definitive answer.

What is the upper on the number of subdirectories any directory can hold under XFS.

I know there is a limit of 32000 under Ext3, but I cannot find a figure for XFS.

Any pointers would be appreciated.

Cheers

Trevor

Sigh. I don't know either, but the data sheet is here: http://oss.sgi.com/projects/xfs/datasheet.pdf
and it goes on about performance not degrading with large numbers of files, but doesn't, as far as I can see, directly answer your question.

Yes I saw that doc.

Did some more research and found 2 links, which while not giving anywhere near a definitive answer points to something significantly above 32K:

http://oss.sgi.com/archives/xfs/2004-03/msg00085.html

http://lists.centos.org/pipermail/ce...er/072129.html

Gonna keep looking...

Just an update for anyone interested.

I have been playing with a Buffalo Terastation and decided to create some sub-directories under a single directory.

Thus far I have created 1.7 million sub-dirs, so it is pretty safe to assume that xfs will pretty much cover my needs :)

A very helpful post! I was looking for an answer to the exact same question. If anyone can provide an exact maximum subdirectory number for XFS, please post.

Bah! I don't have that either, but I do have (or, more precisely, Wikpedia has) http://en.wikipedia.org/wiki/Comparison_of_file_systems which seems to be just about anything else that you'd like to know.

XFS max sub-directories
 

I too was wondering this. I did not hit a hard limit but reached 16,395,845 --well beyond any abuse I could envision.

:hattip: