Kamis, 17 Januari 2019

How to extend disk proxmox without restart centos 7

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Checking the disk size
[[email protected] ~]# df -h
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root   50G   15G   36G  29% /
devtmpfs                 3.9G     0  3.9G   0% /dev
tmpfs                    3.9G     0  3.9G   0% /dev/shm
tmpfs                    3.9G  8.4M  3.9G   1% /run
tmpfs                    3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/mapper/centos-home  242G  242G  3.2M 100% /home
/dev/sda1                497M  264M  233M  54% /boot
tmpfs                    783M     0  783M   0% /run/user/0
[[email protected] ~]#
Check the block size and disk block mapping
[[email protected] ~]# lsblk
NAME            MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda               8:0    0   300G  0 disk
├─sda1            8:1    0   500M  0 part /boot
└─sda2            8:2    0 299.5G  0 part
  ├─centos-root 253:0    0    50G  0 lvm  /
  ├─centos-swap 253:1    0   7.9G  0 lvm  [SWAP]
  └─centos-home 253:2    0 241.6G  0 lvm  /home
[[email protected] ~]#

Check the physical volume
[[email protected] ~]# pvdisplay
  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               centos
  PV Size               299.51 GiB / not usable 3.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              76674
  Free PE               16
  Allocated PE          76658
  PV UUID               nY5L1J-haQq-vtUR-GgnY-mQ0J-JyvY-SxPkZC

[[email protected] ~]#


Check the scsi host and rescan
[[email protected] ~]# ls /sys/class/scsi_host/
host0  host1
[[email protected] ~]#
[[email protected] ~]# sudo echo "- - -" > /sys/class/scsi_host/host0/scan
[[email protected] ~]# sudo echo "- - -" > /sys/class/scsi_host/host1/scan
[[email protected] ~]#


Check the scsi device and rescan
[[email protected] ~]# ls /sys/class/scsi_device/
0:0:0:0
[[email protected] ~]#
[[email protected] ~]# echo 1 > /sys/class/scsi_device/0\:0\:0\:0/device/rescan
[[email protected] ~]#



Perform running partition editor
[[email protected] ~]# fdisk /dev/sda
fdisk: cannot open /dev/sda: No such file or directory
[[email protected] ~]# ls /dev/sd*
/dev/sdb  /dev/sdb1  /dev/sdb2
[[email protected] ~]#





Perform running partition editor
[[email protected] ~]# fdisk /dev/sdb
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/sdb: 536.9 GB, 536870912000 bytes, 1048576000 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: 0x00006bc0

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        2048     1026047      512000   83  Linux
/dev/sdb2         1026048   629145599   314059776   8e  Linux LVM

Command (m for help): n
Partition type:
   p   primary (2 primary, 0 extended, 2 free)
   e   extended
Select (default p):
Using default response p
Partition number (3,4, default 3):
First sector (629145600-1048575999, default 629145600):
Using default value 629145600
Last sector, +sectors or +size{K,M,G} (629145600-1048575999, default 1048575999):
Using default value 1048575999
Partition 3 of type Linux and of size 200 GiB is set

Command (m for help): t
Partition number (1-3, default 3):
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/sdb: 536.9 GB, 536870912000 bytes, 1048576000 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: 0x00006bc0

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        2048     1026047      512000   83  Linux
/dev/sdb2         1026048   629145599   314059776   8e  Linux LVM
/dev/sdb3       629145600  1048575999   209715200   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.
[[email protected] ~]#






Running partprobe command






Create physical volume
[[email protected] ~]# pvcreate /dev/sdb3
  Physical volume "/dev/sdb3" successfully created
[[email protected] ~]#







Check the physical volume after running partition 
[[email protected] ~]# pvdisplay
  --- Physical volume ---
  PV Name               /dev/sdb2
  VG Name               centos
  PV Size               299.51 GiB / not usable 3.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              76674
  Free PE               16
  Allocated PE          76658
  PV UUID               nY5L1J-haQq-vtUR-GgnY-mQ0J-JyvY-SxPkZC

  "/dev/sdb3" is a new physical volume of "200.00 GiB"
  --- NEW Physical volume ---
  PV Name               /dev/sdb3
  VG Name
  PV Size               200.00 GiB
  Allocatable           NO
  PE Size               0
  Total PE              0
  Free PE               0
  Allocated PE          0
  PV UUID               1RIkXk-Scbr-Fbwx-NO6Y-4EWh-UNPT-RW9vGv

[[email protected] ~]#







Show the disk size
[[email protected] ~]# df -h
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root   50G   15G   36G  29% /
devtmpfs                 3.9G     0  3.9G   0% /dev
tmpfs                    3.9G     0  3.9G   0% /dev/shm
tmpfs                    3.9G  8.4M  3.9G   1% /run
tmpfs                    3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/mapper/centos-home  242G  242G  3.2M 100% /home
tmpfs                    783M     0  783M   0% /run/user/0
/dev/sdb1                497M  264M  233M  54% /boot
[[email protected] ~]#








Extend the centos volume group
[[email protected] ~]# vgextend centos /dev/sdb3
  Volume group "centos" successfully extended
[[email protected] ~]#








Extend logical volume home
[[email protected] ~]# lvextend -L +200G /dev/mapper/centos-home
  Size of logical volume centos/home changed from 241.57 GiB (61842 extents) to 441.57 GiB (113042 extents).
  Logical volume home successfully resized.
[[email protected] ~]#
[[email protected] ~]# xfs_growfs /dev/mapper/centos-home
meta-data=/dev/mapper/centos-home isize=256    agcount=4, agsize=15831552 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=0        finobt=0
data     =                       bsize=4096   blocks=63326208, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=0
log      =internal               bsize=4096   blocks=30921, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 63326208 to 115755008
[[email protected] ~]#









Check the disk size after extending
[[email protected] ~]# df -h
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root   50G   15G   36G  29% /
devtmpfs                 3.9G     0  3.9G   0% /dev
tmpfs                    3.9G     0  3.9G   0% /dev/shm
tmpfs                    3.9G  8.4M  3.9G   1% /run
tmpfs                    3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/mapper/centos-home  442G  242G  201G  55% /home
tmpfs                    783M     0  783M   0% /run/user/0
/dev/sdb1                497M  264M  233M  54% /boot
[[email protected] ~]#










Check the disk block mapping
[[email protected] ~]# lsblk
NAME            MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sdb               8:16   0   500G  0 disk
├─sdb1            8:17   0   500M  0 part /boot
├─sdb2            8:18   0 299.5G  0 part
│ ├─centos-root 253:0    0    50G  0 lvm  /
│ ├─centos-swap 253:1    0   7.9G  0 lvm  [SWAP]
│ └─centos-home 253:2    0 441.6G  0 lvm  /home
└─sdb3            8:19   0   200G  0 part
  └─centos-home 253:2    0 441.6G  0 lvm  /home
[[email protected] ~]#

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