Rhcs lec#4 How to make a logical partition
[root@localhost ~]# cd
[root@localhost ~]# fdisk -l
Disk /dev/sda: 34.4 GB, 34359738368 bytes, 67108864 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 label type: dos
Disk identifier: 0x0000d8d1
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 1026047 512000 83 Linux
/dev/sda2 1026048 67108863 33041408 8e Linux LVM
Disk /dev/sdb: 8589 MB, 8589934592 bytes, 16777216 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 label type: dos
Disk identifier: 0x82a31376
Device Boot Start End Blocks Id System
/dev/sdb1 2048 10487807 5242880 8e Linux LVM
/dev/sdb2 10487808 14682111 2097152 82 Linux swap / Solaris
/dev/sdb3 14682112 15706111 512000 83 Linux
Disk /dev/sdc: 1112 MB, 1112226816 bytes, 2172318 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 /dev/mapper/rhel-root: 31.4 GB, 31381782528 bytes, 61292544 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 /dev/mapper/rhel-swap: 2449 MB, 2449473536 bytes, 4784128 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 /dev/sdd: 4007 MB, 4007264256 bytes, 7826688 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 label type: dos
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdd1 32 7823359 3911664 b W95 FAT32
[root@localhost ~]# fdisk /dev/sdc
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0xfe6c5a00.
Command (m for help): p
Disk /dev/sdc: 1112 MB, 1112226816 bytes, 2172318 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 label type: dos
Disk identifier: 0xfe6c5a00
Device Boot Start End Blocks Id System
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1): 1
First sector (2048-2172317, default 2048): 2048
Last sector, +sectors or +size{K,M,G} (2048-2172317, default 2172317): +500M
Partition 1 of type Linux and of size 500 MiB is set
Command (m for help): p
Disk /dev/sdc: 1112 MB, 1112226816 bytes, 2172318 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 label type: dos
Disk identifier: 0xfe6c5a00
Device Boot Start End Blocks Id System
/dev/sdc1 2048 1026047 512000 83 Linux
Command (m for help): n
Partition type:
p primary (1 primary, 0 extended, 3 free)
e extended
Select (default p): p
Partition number (2-4, default 2): 2
First sector (1026048-2172317, default 1026048): +500M
Value out of range.
First sector (1026048-2172317, default 1026048):
Using default value 1026048
Last sector, +sectors or +size{K,M,G} (1026048-2172317, default 2172317):
Using default value 2172317
Partition 2 of type Linux and of size 559.7 MiB is set
Command (m for help): p
Disk /dev/sdc: 1112 MB, 1112226816 bytes, 2172318 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 label type: dos
Disk identifier: 0xfe6c5a00
Device Boot Start End Blocks Id System
/dev/sdc1 2048 1026047 512000 83 Linux
/dev/sdc2 1026048 2172317 573135 83 Linux
Command (m for help): t
Partition number (1,2, default 2): 8e
Partition number (1,2, default 2): 1
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): p
Disk /dev/sdc: 1112 MB, 1112226816 bytes, 2172318 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 label type: dos
Disk identifier: 0xfe6c5a00
Device Boot Start End Blocks Id System
/dev/sdc1 2048 1026047 512000 8e Linux LVM
/dev/sdc2 1026048 2172317 573135 83 Linux
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# partprobe.
[root@localhost ~]# pvcreate /dev/sdc1
Physical volume "/dev/sdc1" successfully created
[root@localhost ~]# pvdisplay /dev/sdc1
"/dev/sdc1" is a new physical volume of "500.00 MiB"
--- NEW Physical volume ---
PV Name /dev/sdc1
VG Name
PV Size 500.00 MiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID jdFUGV-zWwC-ZasC-8Ke9-XMkg-yf8y-Tsvg43
[root@localhost ~]# vgcreate vg01 /dev/sdc1
Volume group "vg01" successfully created
[root@localhost ~]# vgdisplay vg01
--- Volume group ---
VG Name vg01
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 1
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 496.00 MiB
PE Size 4.00 MiB
Total PE 124
Alloc PE / Size 0 / 0
Free PE / Size 124 / 496.00 MiB
VG UUID NsHukh-w5R4-ENAP-oFDP-mXEp-UwgU-66qyy0
[root@localhost ~]# lvcreate -L 300M -n lv01 /dev/vg01
Logical volume "lv01" created
[root@localhost ~]# lvdisplay /dev/vg01/lv01
--- Logical volume ---
LV Path /dev/vg01/lv01
LV Name lv01
VG Name vg01
LV UUID FqR65N-nem0-yJc9-OtqQ-87JJ-1dAf-VHyHM6
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2016-08-27 17:43:23 +0500
LV Status available
# open 0
LV Size 300.00 MiB
Current LE 75
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
[root@localhost ~]# mkfs.xfs /dev/vg01/lv01
meta-data=/dev/vg01/lv01 isize=256 agcount=4, agsize=19200 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0
data = bsize=4096 blocks=76800, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal log bsize=4096 blocks=853, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@localhost ~]# blkid /dev/vg01/lv01
/dev/vg01/lv01: UUID="460185b0-5071-4164-8ad6-3c666dba344a" TYPE="xfs"
[root@localhost ~]# mkdir /Database
[root@localhost ~]# gedit /etc/fstab
[root@localhost ~]# mount -a
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 30G 10G 20G 35% /
devtmpfs 552M 0 552M 0% /dev
tmpfs 561M 140K 560M 1% /dev/shm
tmpfs 561M 7.8M 553M 2% /run
tmpfs 561M 0 561M 0% /sys/fs/cgroup
/dev/sdb1 5.0G 33M 5.0G 1% /Ibrahim
/dev/sda1 497M 118M 379M 24% /boot
/dev/sdd1 3.8G 3.5G 246M 94% /run/media/root/KINGSTON
/dev/mapper/vg01-lv01 297M 16M 282M 6% /Database
[root@localhost ~]# vgdisplay vg01
--- Volume group ---
VG Name vg01
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 496.00 MiB
PE Size 4.00 MiB
Total PE 124
Alloc PE / Size 75 / 300.00 MiB
Free PE / Size 49 / 196.00 MiB
VG UUID NsHukh-w5R4-ENAP-oFDP-mXEp-UwgU-66qyy0
[root@localhost ~]# fdisk -l
Disk /dev/sda: 34.4 GB, 34359738368 bytes, 67108864 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 label type: dos
Disk identifier: 0x0000d8d1
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 1026047 512000 83 Linux
/dev/sda2 1026048 67108863 33041408 8e Linux LVM
Disk /dev/sdb: 8589 MB, 8589934592 bytes, 16777216 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 label type: dos
Disk identifier: 0x82a31376
Device Boot Start End Blocks Id System
/dev/sdb1 2048 10487807 5242880 8e Linux LVM
/dev/sdb2 10487808 14682111 2097152 82 Linux swap / Solaris
/dev/sdb3 14682112 15706111 512000 83 Linux
Disk /dev/sdc: 1112 MB, 1112226816 bytes, 2172318 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 /dev/mapper/rhel-root: 31.4 GB, 31381782528 bytes, 61292544 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 /dev/mapper/rhel-swap: 2449 MB, 2449473536 bytes, 4784128 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 /dev/sdd: 4007 MB, 4007264256 bytes, 7826688 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 label type: dos
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdd1 32 7823359 3911664 b W95 FAT32
[root@localhost ~]# fdisk /dev/sdc
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0xfe6c5a00.
Command (m for help): p
Disk /dev/sdc: 1112 MB, 1112226816 bytes, 2172318 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 label type: dos
Disk identifier: 0xfe6c5a00
Device Boot Start End Blocks Id System
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1): 1
First sector (2048-2172317, default 2048): 2048
Last sector, +sectors or +size{K,M,G} (2048-2172317, default 2172317): +500M
Partition 1 of type Linux and of size 500 MiB is set
Command (m for help): p
Disk /dev/sdc: 1112 MB, 1112226816 bytes, 2172318 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 label type: dos
Disk identifier: 0xfe6c5a00
Device Boot Start End Blocks Id System
/dev/sdc1 2048 1026047 512000 83 Linux
Command (m for help): n
Partition type:
p primary (1 primary, 0 extended, 3 free)
e extended
Select (default p): p
Partition number (2-4, default 2): 2
First sector (1026048-2172317, default 1026048): +500M
Value out of range.
First sector (1026048-2172317, default 1026048):
Using default value 1026048
Last sector, +sectors or +size{K,M,G} (1026048-2172317, default 2172317):
Using default value 2172317
Partition 2 of type Linux and of size 559.7 MiB is set
Command (m for help): p
Disk /dev/sdc: 1112 MB, 1112226816 bytes, 2172318 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 label type: dos
Disk identifier: 0xfe6c5a00
Device Boot Start End Blocks Id System
/dev/sdc1 2048 1026047 512000 83 Linux
/dev/sdc2 1026048 2172317 573135 83 Linux
Command (m for help): t
Partition number (1,2, default 2): 8e
Partition number (1,2, default 2): 1
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): p
Disk /dev/sdc: 1112 MB, 1112226816 bytes, 2172318 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 label type: dos
Disk identifier: 0xfe6c5a00
Device Boot Start End Blocks Id System
/dev/sdc1 2048 1026047 512000 8e Linux LVM
/dev/sdc2 1026048 2172317 573135 83 Linux
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# partprobe.
[root@localhost ~]# pvcreate /dev/sdc1
Physical volume "/dev/sdc1" successfully created
[root@localhost ~]# pvdisplay /dev/sdc1
"/dev/sdc1" is a new physical volume of "500.00 MiB"
--- NEW Physical volume ---
PV Name /dev/sdc1
VG Name
PV Size 500.00 MiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID jdFUGV-zWwC-ZasC-8Ke9-XMkg-yf8y-Tsvg43
[root@localhost ~]# vgcreate vg01 /dev/sdc1
Volume group "vg01" successfully created
[root@localhost ~]# vgdisplay vg01
--- Volume group ---
VG Name vg01
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 1
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 496.00 MiB
PE Size 4.00 MiB
Total PE 124
Alloc PE / Size 0 / 0
Free PE / Size 124 / 496.00 MiB
VG UUID NsHukh-w5R4-ENAP-oFDP-mXEp-UwgU-66qyy0
[root@localhost ~]# lvcreate -L 300M -n lv01 /dev/vg01
Logical volume "lv01" created
[root@localhost ~]# lvdisplay /dev/vg01/lv01
--- Logical volume ---
LV Path /dev/vg01/lv01
LV Name lv01
VG Name vg01
LV UUID FqR65N-nem0-yJc9-OtqQ-87JJ-1dAf-VHyHM6
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2016-08-27 17:43:23 +0500
LV Status available
# open 0
LV Size 300.00 MiB
Current LE 75
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
[root@localhost ~]# mkfs.xfs /dev/vg01/lv01
meta-data=/dev/vg01/lv01 isize=256 agcount=4, agsize=19200 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0
data = bsize=4096 blocks=76800, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal log bsize=4096 blocks=853, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@localhost ~]# blkid /dev/vg01/lv01
/dev/vg01/lv01: UUID="460185b0-5071-4164-8ad6-3c666dba344a" TYPE="xfs"
[root@localhost ~]# mkdir /Database
[root@localhost ~]# gedit /etc/fstab
[root@localhost ~]# mount -a
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 30G 10G 20G 35% /
devtmpfs 552M 0 552M 0% /dev
tmpfs 561M 140K 560M 1% /dev/shm
tmpfs 561M 7.8M 553M 2% /run
tmpfs 561M 0 561M 0% /sys/fs/cgroup
/dev/sdb1 5.0G 33M 5.0G 1% /Ibrahim
/dev/sda1 497M 118M 379M 24% /boot
/dev/sdd1 3.8G 3.5G 246M 94% /run/media/root/KINGSTON
/dev/mapper/vg01-lv01 297M 16M 282M 6% /Database
[root@localhost ~]# vgdisplay vg01
--- Volume group ---
VG Name vg01
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 496.00 MiB
PE Size 4.00 MiB
Total PE 124
Alloc PE / Size 75 / 300.00 MiB
Free PE / Size 49 / 196.00 MiB
VG UUID NsHukh-w5R4-ENAP-oFDP-mXEp-UwgU-66qyy0
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