[Lustre-discuss] Huge numbers of inodes

Colin Faber cfaber at gmail.com
Fri May 20 09:25:09 PDT 2011


You can adjust the defaults to force 1K spacing rather than the default 
4K spacing Sam mentions, (assuming you're not striping like crazy) and 
gain ~1.95 billion inodes against 2TB of space. I've done this 
successfully a few times.

-cf


On 05/20/2011 10:17 AM, Sam Bigger wrote:
> 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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