Also:
df: /run/user/1000/doc: Operation not permitted
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.5G 0 7.5G 0% /dev
tmpfs 7.5G 276M 7.2G 4% /dev/shm
tmpfs 7.5G 9.9M 7.5G 1% /run
tmpfs 7.5G 0 7.5G 0% /sys/fs/cgroup
/dev/sda2 3.7T 784G 2.9T 22% /
/dev/sda2 3.7T 784G 2.9T 22% /.snapshots
/dev/sda2 3.7T 784G 2.9T 22% /tmp
/dev/sda2 3.7T 784G 2.9T 22% /root
/dev/sda2 3.7T 784G 2.9T 22% /boot/grub2/i386-pc
/dev/sda2 3.7T 784G 2.9T 22% /boot/grub2/x86_64-efi
/dev/sda2 3.7T 784G 2.9T 22% /var
/dev/sda2 3.7T 784G 2.9T 22% /opt
/dev/sda2 3.7T 784G 2.9T 22% /home
/dev/sda2 3.7T 784G 2.9T 22% /srv
/dev/sda2 3.7T 784G 2.9T 22% /usr/local
/dev/sda1 500M 328K 500M 1% /boot/efi
tmpfs 1.5G 28K 1.5G 1% /run/user/1000
~> lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 1.8T 0 disk
├─sda1 8:1 0 500M 0 part /boot/efi
├─sda2 8:2 0 1.8T 0 part /usr/local
└─sda3 8:3 0 2G 0 part [SWAP]
sdb 8:16 0 1.8T 0 disk
/dev/sda1: SEC_TYPE="msdos" UUID="--------------" TYPE="vfat" PARTUUID="4abc73fb----------------------------------------"
/dev/sda2: UUID="14a57504------------------" UUID_SUB="e385c59d-------------------" TYPE="btrfs" PARTUUID="166090b6---------------------"
/dev/sda3: UUID="32bf01f5-------------------" TYPE="swap" PARTUUID="4128283b-8-------------------"
/dev/sdb: UUID="14a57504-----------------" UUID_SUB="2a1121fe-1a81-----------------------" TYPE="btrfs"