On Wed, Oct 31, 2012 at 07:47:14AM +0800, ching wrote: > On 10/31/2012 06:19 AM, Hugo Mills wrote: > > On Tue, Oct 30, 2012 at 10:14:12PM +0000, Hugo Mills wrote: > >>> if i have 10G small files in total, then it will consume 20G by default. > >> If those small files are each 128 bytes in size, then you have > >> approximately 80 million of them, and they'd take up 80 million pages, > >> or 320 GiB of total disk space. > > Sorry, to make that clear -- I meant if they were stored in Data. > > If they're inlined in metadata, then they'll take approximately 20 GiB > > as you claim, which is a lot less than the 320 GiB they'd be if > > they're not. > > > is it the same for: > 1. 3k per file with leaf size=4K > 2. 60k per file with leaf size=64k
The inline limit is minimum of * 'max_inline' (8k by default) * PAGE_SIZE * leafsize - header so 60k files for 64k leaves will not get inlined, unless you have a system with 64k pages. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
