> I don't think there's a reason for the exact limit. rbd-fuse was
> created as a prototype, and hasn't had much work on it since.

That's why I've ended up with asking. I've spent 2 days to find out any reason 
-;
The kernel says nothing to me, of course.
Thank you.

 Shinobu

----- Original Message -----
From: "Josh Durgin" <jdur...@redhat.com>
To: "Shinobu Kinjo" <ski...@redhat.com>, "ceph-devel" 
<ceph-devel@vger.kernel.org>
Sent: Wednesday, September 23, 2015 7:42:29 AM
Subject: Re: [CEPH-DEVEL] MAX_RBD_IMAGES

On 09/22/2015 02:55 PM, Shinobu Kinjo wrote:
> Hello,
>
> Does any of you know why *MAX_RBD_IMAGES* was changed from 16 to 128?
> I hope that Dan remember -;
>
> http://resources.ustack.com/ceph/ceph/commit/2a6dcabf7f1b7550a0fa4fd223970ffc24ad7870

I don't think there's a reason for the exact limit. rbd-fuse was
created as a prototype, and hasn't had much work on it since. A
hardcoded limit on open images is not necessary, for example. Some
more ideas for improvements if anyone's interested:

http://pad.ceph.com/p/rbd-fuse-2015

Josh
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