widebook btrfs # cat /proc/self/mounts
rootfs / rootfs rw 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
devtmpfs /dev devtmpfs rw,nosuid,size=1951712k,nr_inodes=487928,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0
tmpfs /run tmpfs rw,nosuid,nodev,mode=755 0 0
/dev/mapper/vg1-gentoo--root / btrfs rw,noatime,compress=zlib,space_cache,autodefrag 0 0
debugfs /sys/kernel/debug debugfs rw,nosuid,nodev,noexec,relatime 0 0
cgroup_root /sys/fs/cgroup tmpfs rw,nosuid,nodev,noexec,relatime,size=10240k,mode=755 0 0
openrc /sys/fs/cgroup/openrc cgroup rw,nosuid,nodev,noexec,relatime,release_agent=/lib64/rc/sh/cgroup-release-agent.sh,name=openrc 0 0
cpuset /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset 0 0
cpu /sys/fs/cgroup/cpu cgroup rw,nosuid,nodev,noexec,relatime,cpu 0 0
cpuacct /sys/fs/cgroup/cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpuacct 0 0
freezer /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer 0 0
/dev/mapper/vg1-gentoo--root /usr/portage btrfs rw,noatime,compress=zlib,space_cache,autodefrag 0 0
/dev/mapper/vg1-gentoo--root /var btrfs rw,noatime,compress=zlib,space_cache,autodefrag 0 0
/dev/mapper/vg1-gentoo--root /opt btrfs rw,noatime,compress=zlib,space_cache,autodefrag 0 0
/dev/mapper/vg1-gentoo--root /var/tmp btrfs rw,noatime,compress=zlib,space_cache,autodefrag 0 0
/dev/mapper/vg1-gentoo--root /tmp btrfs rw,noatime,compress=zlib,space_cache,autodefrag 0 0
/dev/mapper/vg1-gentoo--root /usr/portage/distfiles btrfs rw,noatime,compress=zlib,space_cache,autodefrag 0 0
/dev/mapper/vg1-gentoo--root /usr/src btrfs rw,noatime,compress=zlib,space_cache,autodefrag 0 0
/dev/mapper/vg1-gentoo--root /mnt/Data btrfs rw,noatime,compress=zlib,space_cache,autodefrag 0 0
/dev/mapper/vg1-gentoo--root /mnt/VMs btrfs rw,noatime,compress=zlib,space_cache,autodefrag 0 0
/dev/mapper/vg1-gentoo--root /mnt/btrfs btrfs rw,noatime,compress=zlib,space_cache,autodefrag 0 0
/dev/sdb1 /boot ext4 ro,noatime,data=ordered 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,nosuid,nodev,noexec,relatime 0 0
rpc_pipefs /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0
nfsd /proc/fs/nfsd nfsd rw,nosuid,nodev,noexec,relatime 0 0