Add and Mount logical partitions in linux (manual and automatic)

1. view the new disk [root @ brief top61desktop] fdisk-culdevsdcDiskde I. view the new disk
[Root @ mongotop61 Desktop] # fdisk-cul/dev/sdc

Disk/dev/sdc: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders, total 41943040 sectors
Units = sectors of 1*512 = 512 bytes
Sector size (logical/physical): 512 bytes/512 bytes
I/O size (minimum/optimal): 512 bytes/512 bytes
Disk identifier: 0x00000000
2. add logical partitions
[Root @ mongotop61 Desktop] # fdisk-cu/dev/sdc
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x740491c5.
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)


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)
E ---------------> select extended partition
Partition number (1-4): 2
First sector (2048-41943039, default 2048 ):
Using default value 2048
Last sector, + sectors or + size {K, M, G} (2048-41943039, default 41943039): 10G
Value out of range.
Last sector, + sectors or + size {K, M, G} (2048-41943039, default 41943039): + 10G


Command (m for help): N
Command action
L logical (5 or over)
P primary partition (1-4)
L -----------------> select logical partition
First sector (4096-20973567, default 4096 ):
Using default value 4096
Last sector, + sectors or + size {K, M, G} (4096-20973567, default 20973567): + 5G


Command (m for help): N
Command action
L logical (5 or over)
P primary partition (1-4)
L -------------------> select logical partition
First sector (10491904-20973567, default 10491904 ):
Using default value 10491904
Last sector, + sectors or + size {K, M, G} (10491904-20973567, default 20973567): + 5G
Value out of range.
Last sector, + sectors or + size {K, M, G} (10491904-20973567, default 20973567 ):
Using default value 20973567


Command (m for help): P ---------------> print the partition list


Disk/dev/sdc: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders, total 41943040 sectors
Units = sectors of 1*512 = 512 bytes
Sector size (logical/physical): 512 bytes/512 bytes
I/O size (minimum/optimal): 512 bytes/512 bytes
Disk identifier: 0x740491c5


Device Boot Start End Blocks Id System
/Dev/sdc2 2048 20973567 10485760 5 Extended
/Dev/sdc5 4096 10489855 5242880 83 Linux
/Dev/sdc6 10491904 20973566 5240831 + 83 Linux
Automatically named Logical Partition: sdc5 sdc6
Command (m for help): w ------------------> save and exit
The partition table has been altered!


Calling ioctl () to re-read partition table.
Syncing disks.
[Root @ mongotop61 Desktop] # part
Parted partprobe partx
[Root @ mongotop61 Desktop] # partx-a/dev/sdc
BLKPG: Device or resource busy
Error adding partition 2
BLKPG: Device or resource busy
Error adding partition 5
BLKPG: Device or resource busy
Error adding partition 6
3. View New partitions
[Root @ mongotop61 Desktop] # fdisk-cu/dev/sdc


Command (m for help): p


Disk/dev/sdc: 21.5 GB, 21474836480 bytes
139 heads, 49 sectors/track, 6158 cylinders, total 41943040 sectors
Units = sectors of 1*512 = 512 bytes
Sector size (logical/physical): 512 bytes/512 bytes
I/O size (minimum/optimal): 512 bytes/512 bytes
Disk identifier: 0x740491c5


Device Boot Start End Blocks Id System
/Dev/sdc2 2048 20973567 10485760 5 Extended
/Dev/sdc5 4096 10489855 5242880 83 Linux
/Dev/sdc6 10491904 20973566 5240831 + 83 Linux


Command (m for help): q
4. Format partitions
1sdc5
[Root @ shorttop61 Desktop] # mkfs. ext4/dev/sdc5
Mke2fs 1.41.12 (17-May-2010)
Filesystem label =
OS type: Linux
Block size = 4096 (log = 2)
Fragment size = 4096 (log = 2)
Stride = 0 blocks, Stripe width = 0 blocks
327680 inodes, 1310720 blocks
65536 blocks (5.00%) reserved for the super user
First data block = 0
Maximum filesystem blocks = 1342177280
40 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768,983 04, 163840,229 376, 294912,819 200, 884736


Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done


This filesystem will be automatically checked every 38 mounts or
180 days, whichever comes first. Use tune2fs-c or-I to override.
2sdc6
[Root @ shorttop61 Desktop] # mkfs. ext4/dev/sdc6
Mke2fs 1.41.12 (17-May-2010)
Filesystem label =
OS type: Linux
Block size = 4096 (log = 2)
Fragment size = 4096 (log = 2)
Stride = 0 blocks, Stripe width = 0 blocks
327680 inodes, 1310207 blocks
65510 blocks (5.00%) reserved for the super user
First data block = 0
Maximum filesystem blocks = 1342177280
40 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768,983 04, 163840,229 376, 294912,819 200, 884736


Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done


This filesystem will be automatically checked every 30 mounts or
180 days, whichever comes first. Use tune2fs-c or-I to override.
5. create a Mount Directory
[Root @ mongotop61 Desktop] # cd/mnt/
[Root @ shorttop61 mnt] # ls
Hgfs
[Root @ shorttop61 mnt] # mkdir sdc {5, 6}
[Root @ shorttop61 mnt] # ls
Hgfs sdc5 sdc6
[Root @ shorttop61 mnt] # pwd
/Mnt
6. automatically mount sdc5 and sdc6 to/mnt/sdc5 and/mnt/sdc6 respectively.
[Root @ shorttop61 mnt] # mount/dev/sdc5/mnt/sdc5
[Root @ shorttop61 mnt] # mount/dev/sdc6/mnt/sdc6
7. check whether the mounting is successful
[Root @ override top61 mnt] # mount
/Dev/mapper/vol0-root on/type ext4 (rw)
Proc on/proc type proc (rw)
Sysfs on/sys type sysfs (rw)
Devpts on/dev/pts type devpts (rw, gid = 5, mode = 620)
Tmpfs on/dev/shm type tmpfs (rw, rootcontext = "system_u: object_r: tmpfs_t: s0 ")
/Dev/sda1 on/boot type ext4 (rw)
/Dev/mapper/vol0-home on/home type ext4 (rw)
/Dev/sdb5 on/tmp/sdb5 type ext4 (rw)
/Dev/sdb6 on/tmp/sdb6 type ext4 (rw)
None on/proc/sys/fs/binfmt_misc type binfmt_misc (rw)
Vmware-vmblock on/var/run/vmblock-fuse type fuse. vmware-vmblock (rw, nosuid, nodev, default_permissions, allow_other)
Sunrpc on/var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
Gvfs-fuse-daemon on/root/. gvfs type fuse. gvfs-fuse-daemon (rw, nosuid, nodev)
/Dev/sdc5 on/mnt/sdc5 type ext4 (rw)
/Dev/sdc6 on/mnt/sdc6 type ext4 (rw)
9. uninstall sdc5 sdc6
[Root @ shorttop61 mnt] # umount/dev/sdc5
[Root @ shorttop61 mnt] # umount/dev/sdc6
[Root @ override top61 mnt] # mount
/Dev/mapper/vol0-root on/type ext4 (rw)
Proc on/proc type proc (rw)
Sysfs on/sys type sysfs (rw)
Devpts on/dev/pts type devpts (rw, gid = 5, mode = 620)
Tmpfs on/dev/shm type tmpfs (rw, rootcontext = "system_u: object_r: tmpfs_t: s0 ")
/Dev/sda1 on/boot type ext4 (rw)
/Dev/mapper/vol0-home on/home type ext4 (rw)
/Dev/sdb5 on/tmp/sdb5 type ext4 (rw)
/Dev/sdb6 on/tmp/sdb6 type ext4 (rw)
None on/proc/sys/fs/binfmt_misc type binfmt_misc (rw)
Vmware-vmblock on/var/run/vmblock-fuse type fuse. vmware-vmblock (rw, nosuid, nodev, default_permissions, allow_other)
Sunrpc on/var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
Gvfs-fuse-daemon on/root/. gvfs type fuse. gvfs-fuse-daemon (rw, nosuid, nodev)
10. manual mounting
1. view the UUID of sdb5
[Root @ shorttop61 mnt] # blkid/dev/sdb5
2. manually Mount sdb5 and sdb6
[Root @ shorttop61 mnt] # cd/etc
[Root @ shorttop61 etc] # vi fstab


#
#/Etc/fstab
# Created by anaconda on Fri Apr 11 00:49:26 2014
#
# 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/vol0-root/ext4 ULTS 1 1
UUID = 9425a628-e49f-4675-abf4-b0fe76b38fbc/boot ext4 ULTS 1 2
/Dev/mapper/vol0-home/home ext4 defaults 1 2
UUID = f3d4a81c-f2d6-48d8-be1a-35647cd74615 swap 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 defaults 0 0
UUID = dfa6e086-e5be-4856-9e8d-9565d52b82e6/mnt/sdc5 ext4 defaults 0 0
/Dev/sdc6/mnt/sdc6ext4 defaults0 0
By using the partition name and UUID
11. View mounting results
[Root @ override top61 etc] # mount-a ----------------> refresh the mount
[Root @ override top61 etc] # mount
/Dev/mapper/vol0-root on/type ext4 (rw)
Proc on/proc type proc (rw)
Sysfs on/sys type sysfs (rw)
Devpts on/dev/pts type devpts (rw, gid = 5, mode = 620)
Tmpfs on/dev/shm type tmpfs (rw, rootcontext = "system_u: object_r: tmpfs_t: s0 ")
/Dev/sda1 on/boot type ext4 (rw)
/Dev/mapper/vol0-home on/home type ext4 (rw)
/Dev/sdb5 on/tmp/sdb5 type ext4 (rw)
/Dev/sdb6 on/tmp/sdb6 type ext4 (rw)
None on/proc/sys/fs/binfmt_misc type binfmt_misc (rw)
Vmware-vmblock on/var/run/vmblock-fuse type fuse. vmware-vmblock (rw, nosuid, nodev, default_permissions, allow_other)
Sunrpc on/var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
Gvfs-fuse-daemon on/root/. gvfs type fuse. gvfs-fuse-daemon (rw, nosuid, nodev)
/Dev/sdc5 on/mnt/sdc5 type ext4 (rw)
/Dev/sdc6 on/mnt/sdc6 type ext4 (rw)
[Root @ shorttop61 etc] #