From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from plane.gmane.org ([80.91.229.3]:35254 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754475AbbBDXAJ (ORCPT ); Wed, 4 Feb 2015 18:00:09 -0500 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1YJ8vU-0008Qw-GW for linux-btrfs@vger.kernel.org; Thu, 05 Feb 2015 00:00:04 +0100 Received: from moeller.plus.com ([81.174.172.105]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 05 Feb 2015 00:00:04 +0100 Received: from huaraz by moeller.plus.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 05 Feb 2015 00:00:04 +0100 To: linux-btrfs@vger.kernel.org From: "Markus Moeller" Subject: Btrfs subvolume question Date: Wed, 4 Feb 2015 22:54:49 -0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi , I am new to btrfs and wonder what I need to do to move subvolumes to the right filesystem. I see the following: df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% / devtmpfs 235M 8.0K 235M 1% /dev tmpfs 242M 84K 242M 1% /dev/shm tmpfs 242M 2.4M 240M 1% /run tmpfs 242M 0 242M 0% /sys/fs/cgroup /dev/mapper/system_13.2-usr_lv 18G 6.9G 10G 41% /usr /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /srv /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /.snapshots /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /tmp /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /usr/local /dev/sda2 486M 59M 398M 13% /boot /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /boot/grub2/x86_64-efi /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /boot/grub2/i386-pc /dev/mapper/export_vg-export_lv 20G 18G 2.9G 86% /export /dev/mapper/export_vg-src_lv 5.0G 2.6G 2.5G 51% /src /dev/mapper/system_13.2-var_lv 4.0G 196M 3.4G 6% /var /dev/mapper/system_13.2-opt_lv 6.0G 152M 5.3G 3% /opt /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/spool /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/tmp /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/opt /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/log /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/lib/named /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/lib/mailman /dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/lib/pgsql and I would like to have all the var subvolumes using the /var filesystem space and not root. The same for /boot/grub2 subvolumes. They should use the /boot filesystem. I don't know how I got to this and don't know how to change. # cat /etc/fstab UUID=d300b5ad-372b-4f86-b952-4aa4fc62a84e swap swap defaults 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f / btrfs defaults 0 0 UUID=fd14684f-1950-4f33-95b5-b54f069b4fe0 /boot ext4 acl,user_xattr 1 2 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /boot/grub2/i386-pc btrfs subvol=boot/grub2/i386-pc 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /boot/grub2/x86_64-efi btrfs subvol=boot/grub2/x86_64-efi 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /home btrfs subvol=home 0 0 UUID=f535177b-18a5-443c-8236-96105d58a621 /opt btrfs defaults 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /srv btrfs subvol=srv 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /tmp btrfs subvol=tmp 0 0 UUID=62ffc2f3-7e3a-433e-8a4e-5a89a352f8cf /usr btrfs defaults 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /usr/local btrfs subvol=usr/local 0 0 UUID=323ba68a-e7ed-4f0f-9716-dcad92bb9808 /var btrfs defaults 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/crash btrfs subvol=var/crash 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/lib/mailman btrfs subvol=var/lib/mailman 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/lib/named btrfs subvol=var/lib/named 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/lib/pgsql btrfs subvol=var/lib/pgsql 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/log btrfs subvol=var/log 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/opt btrfs subvol=var/opt 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/spool btrfs subvol=var/spool 0 0 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/tmp btrfs subvol=var/tmp 0 0 /dev/export_vg/export_lv /export xfs defaults 1 2 /dev/export_vg/src_lv /src xfs defaults 1 2 UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /.snapshots btrfs subvol=.snapshots 0 0 Thank you Markus