How to extend disk Linux Redhat 7 nutanix
Checking the disk size
[root@devkapeldb01 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel_devkapeldb01-root 50G 50G 9.5M 100% /
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.5M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/sda1 1014M 143M 872M 15% /boot
/dev/mapper/rhel_devkapeldb01-home 42G 33M 42G 1% /home
tmpfs 1.6G 0 1.6G 0% /run/user/0
[root@devkapeldb01 ~]#
Check the block size and disk block mapping
[root@devkapeldb01 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 100G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 99G 0 part
├─rhel_devkapeldb01-root 253:0 0 50G 0 lvm /
├─rhel_devkapeldb01-swap 253:1 0 7.9G 0 lvm [SWAP]
└─rhel_devkapeldb01-home 253:2 0 41.1G 0 lvm /home
sr0 11:0 1 1024M 0 rom
[root@devkapeldb01 ~]#
Check the physical volume
[root@devkapeldb01 ~]# pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name rhel_devkapeldb01
PV Size <99.00 GiB / not usable 3.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 25343
Free PE 1
Allocated PE 25342
PV UUID o1hXhV-0qQj-rB7n-UPnM-hwl0-KiTO-JWEuf1
[root@devkapeldb01 ~]#
Check the scsi host and rescan
[root@devkapeldb01 ~]# ls /sys/class/scsi_host/
host0 host1 host2
[root@devkapeldb01 ~]#
[root@devkapeldb01 ~]# sudo echo "- - -" > /sys/class/scsi_host/host0/scan
[root@devkapeldb01 ~]# sudo echo "- - -" > /sys/class/scsi_host/host1/scan
[root@devkapeldb01 ~]# sudo echo "- - -" > /sys/class/scsi_host/host2/scan
[root@devkapeldb01 ~]#
Check the scsi device and rescan
[root@devkapeldb01 ~]# ls /sys/class/scsi_device/
0:0:0:0 2:0:0:0
[root@devkapeldb01 ~]# echo 1 > /sys/class/scsi_device/0\:0\:0\:0/device/rescan
[root@devkapeldb01 ~]# echo 1 > /sys/class/scsi_device/2\:0\:0\:0/device/rescan
[root@devkapeldb01 ~]#
Perform running partition editor
[root@devkapeldb01 ~]# ls /dev/sd*
/dev/sda /dev/sda1 /dev/sda2
[root@devkapeldb01 ~]#
Perform running partition editor
[root@devkapeldb01 ~]# fdisk /dev/sda
The device presents a logical sector size that is smaller than
the physical sector size. Aligning to a physical sector (or optimal
I/O) size boundary is recommended, or performance may be impacted.
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.
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
g create a new empty GPT partition table
G create an IRIX (SGI) partition table
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): p
Disk /dev/sda: 214.7 GB, 214748364800 bytes, 419430400 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 1048576 bytes
Disk label type: dos
Disk identifier: 0x000c401d
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 209715199 103808000 8e Linux LVM
Command (m for help): d
Partition number (1,2, default 2): 2
Partition 2 is deleted
Command (m for help): p
Disk /dev/sda: 214.7 GB, 214748364800 bytes, 419430400 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 1048576 bytes
Disk label type: dos
Disk identifier: 0x000c401d
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 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 (2099200-419430399, default 2099200):
Using default value 2099200
Last sector, +sectors or +size{K,M,G} (2099200-419430399, default 419430399):
Using default value 419430399
Partition 2 of type Linux and of size 199 GiB is set
Command (m for help): p
Disk /dev/sda: 214.7 GB, 214748364800 bytes, 419430400 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 1048576 bytes
Disk label type: dos
Disk identifier: 0x000c401d
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 419430399 208665600 83 Linux
Command (m for help): t
Partition number (1,2, default 2): 2
Hex code (type L to list all codes): L
0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris
1 FAT12 27 Hidden NTFS Win 82 Linux swap / So c1 DRDOS/sec (FAT-
2 XENIX root 39 Plan 9 83 Linux c4 DRDOS/sec (FAT-
3 XENIX usr 3c PartitionMagic 84 OS/2 hidden C: c6 DRDOS/sec (FAT-
4 FAT16 <32M 40 Venix 80286 85 Linux extended c7 Syrinx
5 Extended 41 PPC PReP Boot 86 NTFS volume set da Non-FS data
6 FAT16 42 SFS 87 NTFS volume set db CP/M / CTOS / .
7 HPFS/NTFS/exFAT 4d QNX4.x 88 Linux plaintext de Dell Utility
8 AIX 4e QNX4.x 2nd part 8e Linux LVM df BootIt
9 AIX bootable 4f QNX4.x 3rd part 93 Amoeba e1 DOS access
a OS/2 Boot Manag 50 OnTrack DM 94 Amoeba BBT e3 DOS R/O
b W95 FAT32 51 OnTrack DM6 Aux 9f BSD/OS e4 SpeedStor
c W95 FAT32 (LBA) 52 CP/M a0 IBM Thinkpad hi eb BeOS fs
e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a5 FreeBSD ee GPT
f W95 Ext'd (LBA) 54 OnTrackDM6 a6 OpenBSD ef EFI (FAT-12/16/
10 OPUS 55 EZ-Drive a7 NeXTSTEP f0 Linux/PA-RISC b
11 Hidden FAT12 56 Golden Bow a8 Darwin UFS f1 SpeedStor
12 Compaq diagnost 5c Priam Edisk a9 NetBSD f4 SpeedStor
14 Hidden FAT16 <3 61 SpeedStor ab Darwin boot f2 DOS secondary
16 Hidden FAT16 63 GNU HURD or Sys af HFS / HFS+ fb VMware VMFS
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fc VMware VMKCORE
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fd Linux raid auto
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid fe LANstep
1c Hidden W95 FAT3 75 PC/IX be Solaris boot ff BBT
1e Hidden W95 FAT1 80 Old Minix
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): p
Disk /dev/sda: 214.7 GB, 214748364800 bytes, 419430400 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 1048576 bytes
Disk label type: dos
Disk identifier: 0x000c401d
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 419430399 208665600 8e Linux LVM
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
Syncing disks.
[root@devkapeldb01 ~]#
Running partprobe command
[root@localhost ~]# partprobe
[root@localhost ~]#
Reboot the machine
[root@devkapeldb01 ~]# reboot now
login as: root
[email protected]'s password:
Last login: Fri Aug 30 14:46:42 2019 from 192.168.10.10
[root@devkapeldb01 ~]#
Check the physical volume after running partition
[root@devkapeldb01 ~]# pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name rhel_devkapeldb01
PV Size <99.00 GiB / not usable 3.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 25343
Free PE 1
Allocated PE 25342
PV UUID o1hXhV-0qQj-rB7n-UPnM-hwl0-KiTO-JWEuf1
[root@devkapeldb01 ~]#
[root@devkapeldb01 ~]# lvdisplay
--- Logical volume ---
LV Path /dev/rhel_devkapeldb01/swap
LV Name swap
VG Name rhel_devkapeldb01
LV UUID xATCaa-rRJl-vDHT-zvcE-RPxW-dNLB-eV7RGF
LV Write Access read/write
LV Creation host, time devkapeldb01.debhub.go.id, 2018-11-24 02:54:52 +0700
LV Status available
# open 2
LV Size <7.88 GiB
Current LE 2016
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:1
--- Logical volume ---
LV Path /dev/rhel_devkapeldb01/home
LV Name home
VG Name rhel_devkapeldb01
LV UUID lIHRYR-VP7y-TbV6-7Nnb-02LA-7muA-UoYa8r
LV Write Access read/write
LV Creation host, time devkapeldb01.debhub.go.id, 2018-11-24 02:54:52 +0700
LV Status available
# open 1
LV Size <41.12 GiB
Current LE 10526
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
--- Logical volume ---
LV Path /dev/rhel_devkapeldb01/root
LV Name root
VG Name rhel_devkapeldb01
LV UUID 8pH6bw-cP92-d775-kS7h-tQYr-iflF-oauCiA
LV Write Access read/write
LV Creation host, time devkapeldb01.debhub.go.id, 2018-11-24 02:54:53 +0700
LV Status available
# open 1
LV Size 50.00 GiB
Current LE 12800
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0
[root@devkapeldb01 ~]#
[root@devkapeldb01 ~]# vgdisplay
--- Volume group ---
VG Name rhel_devkapeldb01
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 1
Act PV 1
VG Size <99.00 GiB
PE Size 4.00 MiB
Total PE 25343
Alloc PE / Size 25342 / 98.99 GiB
Free PE / Size 1 / 4.00 MiB
VG UUID h2DHAh-nLJX-2kXY-18bR-9Yc6-Vzck-ja7WVU
[root@devkapeldb01 ~]#
Show the disk size
[root@devkapeldb01 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel_devkapeldb01-root 50G 50G 9.4M 100% /
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.5M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/sda1 1014M 143M 872M 15% /boot
/dev/mapper/rhel_devkapeldb01-home 42G 33M 42G 1% /home
tmpfs 1.6G 0 1.6G 0% /run/user/0
[root@devkapeldb01 ~]#
Extend the physical volume
[root@devkapeldb01 ~]# pvresize /dev/sda2
Physical volume "/dev/sda2" changed
1 physical volume(s) resized / 0 physical volume(s) not resized
[root@devkapeldb01 ~]#
[root@devkapeldb01 ~]# pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name rhel_devkapeldb01
PV Size <199.00 GiB / not usable 2.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 50943
Free PE 25601
Allocated PE 25342
PV UUID o1hXhV-0qQj-rB7n-UPnM-hwl0-KiTO-JWEuf1
[root@devkapeldb01 ~]#
Extend logical volume home
[root@devkapeldb01 ~]# lvextend -L +100G /dev/rhel_devkapeldb01/root
Size of logical volume rhel_devkapeldb01/root changed from 50.00 GiB (12800 extents) to 150.00 GiB (38400 extents).
Logical volume rhel_devkapeldb01/root successfully resized.
[root@devkapeldb01 ~]#
[root@devkapeldb01 ~]# xfs_growfs /dev/mapper/rhel_devkapeldb01-root
meta-data=/dev/mapper/rhel_devkapeldb01-root isize=512 agcount=4, agsize=3276800 blks
= sectsz=4096 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=13107200, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=6400, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 13107200 to 39321600
[root@devkapeldb01 ~]#
Check the disk size after extending
[root@devkapeldb01 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel_devkapeldb01-root 150G 50G 101G 34% /
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.4M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/sda1 1014M 143M 872M 15% /boot
/dev/mapper/rhel_devkapeldb01-home 42G 33M 42G 1% /home
tmpfs 1.6G 0 1.6G 0% /run/user/0
[root@devkapeldb01 ~]#
Check the disk block mapping
[root@devkapeldb01 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 200G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 199G 0 part
├─rhel_devkapeldb01-root 253:0 0 150G 0 lvm /
├─rhel_devkapeldb01-swap 253:1 0 7.9G 0 lvm [SWAP]
└─rhel_devkapeldb01-home 253:2 0 41.1G 0 lvm /home
sr0 11:0 1 1024M 0 rom
[root@devkapeldb01 ~]#
Check The PV, VG and LV[root@devkapeldb01 ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 rhel_devkapeldb01 lvm2 a-- <199.00g 4.00m
[root@devkapeldb01 ~]#
[root@devkapeldb01 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
rhel_devkapeldb01 1 3 0 wz--n- <199.00g 4.00m
[root@devkapeldb01 ~]#
[root@devkapeldb01 ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
home rhel_devkapeldb01 -wi-ao---- <41.12g
root rhel_devkapeldb01 -wi-ao---- 150.00g
swap rhel_devkapeldb01 -wi-ao---- <7.88g
[root@devkapeldb01 ~]#
[root@devkapeldb01 ~]#
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