purpose
create 3 partitions of 8Go for :
- /var/www
- /mnt/gitea
- /var/lib/postgresql/
Create 3 partitions on the USB drive of 8Go
root@raspberrypi:~# fdisk /dev/sda
=>
Command (m for help): o
Created a new DOS disklabel with disk identifier 0x78494e0c.
Command (m for help): n
Partition type
p primary (0 primary, 0 extended, 4 free)
e extended (container for logical partitions)
Select (default p): p
Partition number (1-4, default 1): 1
First sector (2048-60063743, default 2048):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (2048-60063743, default 60063743): +8G
Created a new partition 1 of type 'Linux' and of size 8 GiB.
Command (m for help): n
Partition type
p primary (1 primary, 0 extended, 3 free)
e extended (container for logical partitions)
Select (default p): p
Partition number (2-4, default 2): 2
First sector (16779264-60063743, default 16779264):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (16779264-60063743, default 60063743): +8G
Created a new partition 2 of type 'Linux' and of size 8 GiB.
Command (m for help): n
Partition type
p primary (2 primary, 0 extended, 2 free)
e extended (container for logical partitions)
Select (default p): p
Partition number (3,4, default 3):
First sector (33556480-60063743, default 33556480):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (33556480-60063743, default 60063743): +8G
Created a new partition 3 of type 'Linux' and of size 8 GiB.
Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.
Check
root@raspberrypi:~# fdisk -l /dev/sda
=>
Disk /dev/sda: 28.7 GiB, 30752636928 bytes, 60063744 sectors
Disk model: Ultra
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x78494e0c
Device Boot Start End Sectors Size Id Type
/dev/sda1 2048 16779263 16777216 8G 83 Linux
/dev/sda2 16779264 33556479 16777216 8G 83 Linux
/dev/sda3 33556480 50333695 16777216 8G 83 Linux
create ext4 filesystem for each partitions with explicit labels
mkfs.ext4 -L pi-git /dev/sda1
mkfs.ext4 -L pi-web /dev/sda2
mkfs.ext4 -L pi-pgsql /dev/sda3
Check
root@raspberrypi:~# ls -l /dev/disk/by-label/
=>
total 0
lrwxrwxrwx 1 root root 15 Apr 28 18:17 boot -> ../../mmcblk0p1
lrwxrwxrwx 1 root root 10 Apr 29 11:02 pi-git -> ../../sda1
lrwxrwxrwx 1 root root 10 Apr 29 11:05 pi-pgsql -> ../../sda3
lrwxrwxrwx 1 root root 10 Apr 29 11:05 pi-web -> ../../sda2
lrwxrwxrwx 1 root root 15 Apr 28 18:17 rootfs -> ../../mmcblk0p2
Mount
mkdir -p /var/www
mkdir -p /mnt/gitea
mkdir -p /var/lib/postgresql/
add to `/etc/fstab. see fstab resource:
LABEL=pi-git /mnt/gitea ext4 defaults 0 2
LABEL=pi-web /var/www ext4 defaults 0 2
LABEL=pi-pgsql /var/lib/postgresql ext4 defaults 0 2
mount:
mount -a
check:
root@raspberrypi:~# df -h
=>
Filesystem Size Used Avail Use% Mounted on
/dev/root 15G 1.3G 13G 10% /
devtmpfs 459M 0 459M 0% /dev
tmpfs 464M 0 464M 0% /dev/shm
tmpfs 464M 6.3M 457M 2% /run
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 464M 0 464M 0% /sys/fs/cgroup
/dev/mmcblk0p1 253M 53M 200M 21% /boot
tmpfs 93M 0 93M 0% /run/user/1000
/dev/sda1 7.9G 36M 7.4G 1% /mnt/gitea
/dev/sda2 7.9G 36M 7.4G 1% /var/www
/dev/sda3 7.9G 36M 7.4G 1% /var/lib/postgresql