In this article, I will show how to create a filesystem and mount it on Linux.
Existing filesystem:
[root@orclprd Packages]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_orclprd-lv_root
13G 4.7G 7.4G 39% /
tmpfs 2.8G 76K 2.8G 1% /dev/shm
/dev/sda1 477M 67M 381M 15% /boot
/dev/sr0 3.6G 3.6G 0 100% /media/OL6.6 x86_64 Disc 1 20141018
[root@orclprd ~]# cd /dev [root@orclprd dev]# ls sd* sda sda1 sda2 sdb
Create a logical partition:
[root@orclprd dev]# fdisk sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0xa40c4950.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-3916, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-3916, default 3916):
Using default value 3916
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
Make filesystem format:
[root@orclprd dev]# mkfs -t ext3 /dev/sdb1
mke2fs 1.43-WIP (20-Jun-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
1966080 inodes, 7863809 blocks
393190 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
240 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
Get UUID for created filesystem:
[root@orclprd dev]# blkid /dev/sdb1 /dev/sdb1: UUID="3c468b4d-5c12-42ae-b633-41555c89c6d4" SEC_TYPE="ext2" TYPE="ext3"
Add to FSTAB:
[root@orclprd dev]# mkdir /u01 [root@orclprd dev]# cat /etc/fstab # # /etc/fstab # Created by anaconda on Thu Nov 16 00:34:47 2023 # # Accessible filesystems, by reference, are maintained under '/dev/disk' # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info # /dev/mapper/vg_orclprd-lv_root / ext4 defaults 1 1 UUID=71c1deab-baa3-4510-8e2a-c92de847fe82 /boot ext4 defaults 1 2 /dev/mapper/vg_orclprd-lv_swap swap swap defaults 0 0 UUID=3c468b4d-5c12-42ae-b633-41555c89c6d4 /u01 ext3 defaults 0 0 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults 0 0 proc /proc proc defaults 0 0
Mount and Validate:
[root@orclprd dev]# mount -a
[root@orclprd dev]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_orclprd-lv_root
13G 4.7G 7.4G 39% /
tmpfs 2.8G 76K 2.8G 1% /dev/shm
/dev/sda1 477M 67M 381M 15% /boot
/dev/sr0 3.6G 3.6G 0 100% /media/OL6.6 x86_64 Disc 1 20141018
/dev/sdb1 30G 173M 28G 1% /u01
