From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lb0-f181.google.com ([209.85.217.181]:36404 "EHLO mail-lb0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758147Ab3EYW3o (ORCPT ); Sat, 25 May 2013 18:29:44 -0400 Received: by mail-lb0-f181.google.com with SMTP id w20so5697786lbh.40 for ; Sat, 25 May 2013 15:29:43 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <1751895.r3q1HmeO0C@merkaba> References: <1751895.r3q1HmeO0C@merkaba> Date: Sat, 25 May 2013 23:29:41 +0100 Message-ID: Subject: Re: Recommended settings for SSD From: Leonidas Spyropoulos To: Martin Steigerwald Cc: Duncan <1i5t5.duncan@cox.net>, "linux-btrfs@vger.kernel.org" Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Sat, May 25, 2013 at 1:13 PM, Martin Steigerwald wrote: > Am Samstag, 25. Mai 2013, 03:58:12 schrieb Duncan: > [...] > And can be verified by: > > martin@merkaba:~> grep ssd /proc/mounts > /dev/mapper/merkaba-debian / btrfs rw,noatime,compress=lzo,ssd,space_cache 0 0 > /dev/mapper/merkaba-debian /mnt/debian-zeit btrfs > rw,noatime,compress=lzo,ssd,space_cache 0 0 > /dev/mapper/merkaba-home /home btrfs rw,noatime,compress=lzo,ssd,space_cache 0 > 0 > /dev/mapper/merkaba-home /mnt/home-zeit btrfs > rw,noatime,compress=lzo,ssd,space_cache 0 0 > martin@merkaba:~> grep ssd /etc/fstab > martin@merkaba:~#1> > [...] > More majordomo info at http://vger.kernel.org/majordomo-info.html I see you are using compression. I don't have compression at the moment and I would like to use it. What will happen to the data that are already on the partitions? Will it be compressed when I use them? Do I have to re-write them? Would it be compressed with btrfs defrag command? Thanks for the information -- Caution: breathing may be hazardous to your health. #include int main(){printf("%s","\x4c\x65\x6f\x6e\x69\x64\x61\x73");}