[Lustre-discuss] Huge numbers of inodes

[Ben Evans]

I've created 1 billion files (or more) in my MD tests, and one major
thing that you do run into is the OST allocation issue I mentioned in my
presentation at LUG.  You can alleviate this by increasing the number of
OSTs you have in your FS (I wouldn't exceed 32M files per OST), or by
changing the OST object layout.

-----Original Message-----
From: lustre-discuss-bounces at lists.lustre.org
[mailto:lustre-discuss-bounces at lists.lustre.org] On Behalf Of Sam Bigger
Sent: Friday, May 20, 2011 12:17 PM
To: 'Daniel Mayfield'; lustre-discuss at lists.lustre.org
Subject: Re: [Lustre-discuss] Huge numbers of inodes


I doubt it. The largest lustre systems are a little over 300 million
files
that are really in existence.

However, the limits, in terms of just maximum inodes allowed, using 4K
per
inode and a 2TB max MDT size (mirrored 2 copies), only allows for a
little
over 500 million files max.

-Sam
Whamcloud 

-----Original Message-----
From: lustre-discuss-bounces at lists.lustre.org
[mailto:lustre-discuss-bounces at lists.lustre.org] On Behalf Of Daniel
Mayfield
Sent: Friday, May 20, 2011 9:53 AM
To: lustre-discuss at lists.lustre.org
Subject: [Lustre-discuss] Huge numbers of inodes

Does anybody have experience with Lustre filesystems in the 5-10B inode
range?   What kind of gotchas do you find at that scale?  What are your
stripe settings like?

daniel

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