From: Javier Marcet Subject: Fwd: Far too long mount time Date: Thu, 16 Aug 2012 09:54:23 +0200 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 To: Linux Ext4 Mailing List Return-path: Received: from mail-ob0-f174.google.com ([209.85.214.174]:49683 "EHLO mail-ob0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752507Ab2HPHyo (ORCPT ); Thu, 16 Aug 2012 03:54:44 -0400 Received: by obbuo13 with SMTP id uo13so3328203obb.19 for ; Thu, 16 Aug 2012 00:54:43 -0700 (PDT) In-Reply-To: Sender: linux-ext4-owner@vger.kernel.org List-ID: Hi, I'm in the process of setting up a new software raid with four 3TB disks. So far I'm doing the tests using also bcache on a 60GB partition on a 120GB SSD. Everything is protected by a UPS. On the software side: self compiled kernel 3.5.1 and util-linux 2.20.1 Thus far, ext4 is doing really really well but for one thing, the mount time. At the moment I'm testing a RAID5 which makes the partition 8.2TB. ext4 takes: $ time mount /mnt/raid 0.00s user 79.49s system 92% cpu 1:26.25 total xfs, OTOH, is way faster: time mount /mnt/raid 0.00s user 0.01s system 0% cpu 1.869 total I'v tried everything I could think of but the mount time remains constant. Is there anything I can do to speed up the mount time? -- Javier Marcet