From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk1-f173.google.com ([209.85.222.173]:38410 "EHLO mail-qk1-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728221AbeLTPNK (ORCPT ); Thu, 20 Dec 2018 10:13:10 -0500 Received: by mail-qk1-f173.google.com with SMTP id a1so1181402qkc.5 for ; Thu, 20 Dec 2018 07:13:10 -0800 (PST) Received: from lud1.home ([189.115.213.104]) by smtp.gmail.com with ESMTPSA id j36sm4296771qtk.15.2018.12.20.07.13.07 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 20 Dec 2018 07:13:08 -0800 (PST) Date: Thu, 20 Dec 2018 13:13:05 -0200 From: Luciano ES Subject: Same size drive has less usable space Message-ID: <20181220131305.2a84b717@lud1.home> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: linux-xfs@vger.kernel.org I have a new drive for backups. I copied everything over and now I have this problem: Filesystem Size Used Avail Use% Mounted on /dev/sda1 931G 914G 18G 99% /xx /dev/sdb1 931G 920G 11G 99% /xxbkp So 914GB from the old drive expand and become 920GB. The new drive is supposed to be the same size, but for some reason it can't really hold it all. I will be forced to waste precious gigabytes. I tried to format the new one exactly like the old one, but it was not possible: $ xfs_info /xx meta-data=/dev/sda1 isize=256 agcount=8, agsize=30506944 blks = sectsz=4096 attr=2, projid32bit=1 = crc=0 finobt=0 spinodes=0 rmapbt=0 = reflink=0 data = bsize=4096 blocks=244055552, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=0 log =internal bsize=4096 blocks=119167, version=2 = sectsz=4096 sunit=1 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 $ xfs_info /xxbkp meta-data=/dev/sdb1 isize=512 agcount=8, agsize=61013888 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=1 spinodes=1 rmapbt=0 = reflink=0 data = bsize=2048 blocks=488111104, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=1 log =internal bsize=2048 blocks=238335, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 I guess at least part of the problem is CRC enabled in the second one. So, is there anything I can do to make all the data fit in the new drive? TIA -- Luciano ES >>