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Date: Fri, 13 Feb 2015 11:28:34 -0600 From: Eric Sandeen <sandeen@...hat.com> To: suntrop@....de, Andreas Dilger <adilger@...ger.ca> CC: "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org> Subject: Re: File limit inside a single directory On 2/13/15 10:49 AM, suntrop@....de wrote: > Thanks guys. I was afraid of having a couple 100K (at most). The > server support team told me not to have more than 10 to 20K. There > seems to be a misconception (for me and people from the CMS) about > the 32K subdirectory limit, but this ins't for files/folders within a > single directory but rather nested directories like /1/2/3.../32000 You've confused things a bit here, FWIW. The 32k (well, 32000 because, sure) limit on ext3 is max link count; each subdirectory increases the link count on its parent, but only its parent. It's not about deep nesting, or about files in a dir. It's only about subdirs in a parent dir. # mkdir dir # stat dir | grep Links Device: fd06h/64774d Inode: 2490391 Links: 2 // . and .. entries # mkdir dir/subdir1 dir/subdir2 dir/subdir3 # stat dir | grep Links Device: fd06h/64774d Inode: 2490391 Links: 5 # mkdir dir/subdir1/subsubdir1 dir/subdir1/subsubdir2 dir/subdir1/subsubdir3 # stat dir | grep Links Device: fd06h/64774d Inode: 2490391 Links: 5 ext4 bumped that max to 64000, and just stops counting if that number gets exceeded... -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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