linux-kernel - Re: ext3/ext4 directories don't shrink after deleting lots of files

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1b7401870905141732v43bd7321g1f0d9721b5e3f761@mail.gmail.com>
Date:	Thu, 14 May 2009 20:32:43 -0400
From:	Josef Bacik <josef@...icpanda.com>
To:	Timo Sirainen <tss@....fi>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: ext3/ext4 directories don't shrink after deleting lots of files

On Thu, May 14, 2009 at 6:02 PM, Timo Sirainen <tss@....fi> wrote:
> I've noticed that if you create e.g. 100k files to a directory and then
> delete the files, the directory entry still seems to take a couple of
> megabytes. Later whenever accessing the (almost empty) directory it can
> take a few seconds to load it into cache.
>
> Is there a way to shrink the directory somehow without having to rmdir()
> it? Would be nice if kernel did it automatically, but I could live with
> a manual userspace syscall/tool as well.
>

fsck -D <device>, when its unmounted of course.

Josef
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/