VMware side:
1. In the vSphere client, right click on the desired VM and choose "Edit Settings"
2. In Hardware tab, click Add and choose "Hard Disk" and click next until new disk has been added to VM.
Within the Linux VM:
1. Detecting new hard disk
We need to check if Linux sees new hard disk:
# fdisk -l
Disk /dev/sda: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000da861
Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 64 26109 209202176 8e Linux LVM
Disk /dev/mapper/vg00-lv_root: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/mapper/vg00-lv_swap: 4160 MB, 4160749568 bytes
255 heads, 63 sectors/track, 505 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdb: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
In this case /dev/sdb has been detected at the end of the list.
We can confirm it by checking the logs:
# tail /var/log/messages
If Linux cannot see new hard disk, we need to scan the disks:
echo "- - -" > /sys/class/scsi_host/host#/scan
and check the results in /var/log/messages.
2. After Linux can see the new hard disk, we need to partition it:
# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x8fddf252.
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').
Press "p" to print current partition table, which is empty in this case:
Command (m for help): p
Disk /dev/sdb: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8fddf252
Device Boot Start End Blocks Id System
Press "n" to add new partition, "p" to make it primary and "1" as creating the first partition:
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
Choosing start and end disk cylinder for the size of the new partition, for me I accept the default of "1" for start and default of last cylinder to use the whole disk for this new partition:
First cylinder (1-26108, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-26108, default 26108):
Using default value 26108
Press "p" to see the new partition table:
Command (m for help): p
Disk /dev/sdb: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8fddf252
Device Boot Start End Blocks Id System
/dev/sdb1 1 26108 209712478+ 83 Linux
Our new partition has been created and its type is 83 under "Id" column.
# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x8fddf252.
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): p
Disk /dev/sdb: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8fddf252
Device Boot Start End Blocks Id System
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
Choosing start and end disk cylinder for the size of the new partition, for me I accept the default of "1" for start and default of last cylinder to use the whole disk for this new partition:
First cylinder (1-26108, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-26108, default 26108):
Using default value 26108
Press "p" to see the new partition table:
Command (m for help): p
Disk /dev/sdb: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8fddf252
Device Boot Start End Blocks Id System
/dev/sdb1 1 26108 209712478+ 83 Linux
Our new partition has been created and its type is 83 under "Id" column.
To make use of it as LVM disk, we will change its type to "8e" as Linux LVM.
Press "l" to see all partition types:
Command (m for help): l
0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris
1 FAT12 39 Plan 9 82 Linux swap / So c1 DRDOS/sec (FAT-
2 XENIX root 3c PartitionMagic 83 Linux c4 DRDOS/sec (FAT-
3 XENIX usr 40 Venix 80286 84 OS/2 hidden C: c6 DRDOS/sec (FAT-
4 FAT16 <32M 41 PPC PReP Boot 85 Linux extended c7 Syrinx
5 Extended 42 SFS 86 NTFS volume set da Non-FS data
6 FAT16 4d QNX4.x 87 NTFS volume set db CP/M / CTOS / .
7 HPFS/NTFS 4e QNX4.x 2nd part 88 Linux plaintext de Dell Utility
8 AIX 4f QNX4.x 3rd part 8e Linux LVM df BootIt
9 AIX bootable 50 OnTrack DM 93 Amoeba e1 DOS access
a OS/2 Boot Manag 51 OnTrack DM6 Aux 94 Amoeba BBT e3 DOS R/O
b W95 FAT32 52 CP/M 9f BSD/OS e4 SpeedStor
c W95 FAT32 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi eb BeOS fs
e W95 FAT16 (LBA) 54 OnTrackDM6 a5 FreeBSD ee GPT
f W95 Ext'd (LBA) 55 EZ-Drive a6 OpenBSD ef EFI (FAT-12/16/
10 OPUS 56 Golden Bow a7 NeXTSTEP f0 Linux/PA-RISC b
11 Hidden FAT12 5c Priam Edisk a8 Darwin UFS f1 SpeedStor
12 Compaq diagnost 61 SpeedStor a9 NetBSD f4 SpeedStor
14 Hidden FAT16 <3 63 GNU HURD or Sys ab Darwin boot f2 DOS secondary
16 Hidden FAT16 64 Novell Netware af HFS / HFS+ fb VMware VMFS
17 Hidden HPFS/NTF 65 Novell Netware b7 BSDI fs fc VMware VMKCORE
18 AST SmartSleep 70 DiskSecure Mult b8 BSDI swap fd Linux raid auto
1b Hidden W95 FAT3 75 PC/IX bb Boot Wizard hid fe LANstep
1c Hidden W95 FAT3 80 Old Minix be Solaris boot ff BBT
1e Hidden W95 FAT1
Press "t" to change the partition type and enter "8e" for LVM:
Command (m for help): t
Hex code (type L to list codes): 8e
Changed system type of partition 1 to 8e (Linux LVM)
Now we can see our new partition is "8e" LVM type:
Command (m for help): p
Disk /dev/sdb: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8fddf252
Device Boot Start End Blocks Id System
/dev/sdb1 1 26108 209712478+ 8e Linux LVM
Now we are almost done with partition creation and good to write the changes to the disk with pressing "w":
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
After new partition has been created, we can check it:
# fdisk -l
Disk /dev/sda: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000da861
Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 64 26109 209202176 8e Linux LVM
Disk /dev/mapper/vg00-lv_root: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/mapper/vg00-lv_swap: 4160 MB, 4160749568 bytes
255 heads, 63 sectors/track, 505 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdb: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8fddf252
Device Boot Start End Blocks Id System
/dev/sdb1 1 26108 209712478+ 8e Linux LVM
Therefore, our new hard disk /dev/sdb has its own first partition of /dev/sdb1.
3. LVM side: Now we need to make our new partition to be a physical volume:
# pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created
And add new physical volume to an existing volume group or create new volume group. Here we will add it to an existing VG:
# vgextend vg00 /dev/sdb1
Volume group "vg00" successfully extended
And current status of volume group after new pv has been added, we can see it at the end of the result:
# vgdisplay -v
Finding all volume groups
Finding volume group "vg00"
--- Volume group ---
VG Name vg00
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 9
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 7
Open LV 7
Max PV 0
Cur PV 2
Act PV 2
VG Size 399.50 GiB
PE Size 4.00 MiB
Total PE 102273
Alloc PE / Size 7136 / 27.88 GiB
Free PE / Size 95137 / 371.63 GiB
VG UUID Mgj9le-I3Z2-acFE-qwoL-IUNr-C051-rsG3X5
--- Logical volume ---
LV Path /dev/vg00/lv_root
LV Name lv_root
VG Name vg00
LV UUID dQ68re-B5bN-AjBk-WTdb-O5rw-CpSe-0eH4Jj
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-07-23 10:28:39 +0200
LV Status available
# open 1
LV Size 4.00 GiB
Current LE 1024
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Path /dev/vg00/lv_swap
LV Name lv_swap
VG Name vg00
LV UUID yHKrBb-qDtj-Syj3-g7mv-uNiG-xeNa-bJ6dkq
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-07-23 10:28:43 +0200
LV Status available
# open 1
LV Size 3.88 GiB
Current LE 992
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Physical volumes ---
PV Name /dev/sda2
PV UUID xSYV0W-wOoS-xGze-vNDk-NX9w-sLbj-CLBwnn
PV Status allocatable
Total PE / Free PE 51074 / 43938
PV Name /dev/sdb1
PV UUID wIC3vg-A0B3-eIGX-EJ6j-OSwO-7rhB-9jv1Ym
PV Status allocatable
Total PE / Free PE 51199 / 51199
Now we are good to create new logical volume or extend an existing one. In my case, I'll create new LV in volume group "vg00" with name "lv_backup" and "51199" number of physical extents specified with "-l":
Command (m for help): l
0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris
1 FAT12 39 Plan 9 82 Linux swap / So c1 DRDOS/sec (FAT-
2 XENIX root 3c PartitionMagic 83 Linux c4 DRDOS/sec (FAT-
3 XENIX usr 40 Venix 80286 84 OS/2 hidden C: c6 DRDOS/sec (FAT-
4 FAT16 <32M 41 PPC PReP Boot 85 Linux extended c7 Syrinx
5 Extended 42 SFS 86 NTFS volume set da Non-FS data
6 FAT16 4d QNX4.x 87 NTFS volume set db CP/M / CTOS / .
7 HPFS/NTFS 4e QNX4.x 2nd part 88 Linux plaintext de Dell Utility
8 AIX 4f QNX4.x 3rd part 8e Linux LVM df BootIt
9 AIX bootable 50 OnTrack DM 93 Amoeba e1 DOS access
a OS/2 Boot Manag 51 OnTrack DM6 Aux 94 Amoeba BBT e3 DOS R/O
b W95 FAT32 52 CP/M 9f BSD/OS e4 SpeedStor
c W95 FAT32 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi eb BeOS fs
e W95 FAT16 (LBA) 54 OnTrackDM6 a5 FreeBSD ee GPT
f W95 Ext'd (LBA) 55 EZ-Drive a6 OpenBSD ef EFI (FAT-12/16/
10 OPUS 56 Golden Bow a7 NeXTSTEP f0 Linux/PA-RISC b
11 Hidden FAT12 5c Priam Edisk a8 Darwin UFS f1 SpeedStor
12 Compaq diagnost 61 SpeedStor a9 NetBSD f4 SpeedStor
14 Hidden FAT16 <3 63 GNU HURD or Sys ab Darwin boot f2 DOS secondary
16 Hidden FAT16 64 Novell Netware af HFS / HFS+ fb VMware VMFS
17 Hidden HPFS/NTF 65 Novell Netware b7 BSDI fs fc VMware VMKCORE
18 AST SmartSleep 70 DiskSecure Mult b8 BSDI swap fd Linux raid auto
1b Hidden W95 FAT3 75 PC/IX bb Boot Wizard hid fe LANstep
1c Hidden W95 FAT3 80 Old Minix be Solaris boot ff BBT
1e Hidden W95 FAT1
Press "t" to change the partition type and enter "8e" for LVM:
Command (m for help): t
Hex code (type L to list codes): 8e
Changed system type of partition 1 to 8e (Linux LVM)
Now we can see our new partition is "8e" LVM type:
Command (m for help): p
Disk /dev/sdb: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8fddf252
Device Boot Start End Blocks Id System
/dev/sdb1 1 26108 209712478+ 8e Linux LVM
Now we are almost done with partition creation and good to write the changes to the disk with pressing "w":
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
After new partition has been created, we can check it:
# fdisk -l
Disk /dev/sda: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000da861
Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 64 26109 209202176 8e Linux LVM
Disk /dev/mapper/vg00-lv_root: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/mapper/vg00-lv_swap: 4160 MB, 4160749568 bytes
255 heads, 63 sectors/track, 505 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdb: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8fddf252
Device Boot Start End Blocks Id System
/dev/sdb1 1 26108 209712478+ 8e Linux LVM
Therefore, our new hard disk /dev/sdb has its own first partition of /dev/sdb1.
3. LVM side: Now we need to make our new partition to be a physical volume:
# pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created
And add new physical volume to an existing volume group or create new volume group. Here we will add it to an existing VG:
# vgextend vg00 /dev/sdb1
Volume group "vg00" successfully extended
And current status of volume group after new pv has been added, we can see it at the end of the result:
# vgdisplay -v
Finding all volume groups
Finding volume group "vg00"
--- Volume group ---
VG Name vg00
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 9
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 7
Open LV 7
Max PV 0
Cur PV 2
Act PV 2
VG Size 399.50 GiB
PE Size 4.00 MiB
Total PE 102273
Alloc PE / Size 7136 / 27.88 GiB
Free PE / Size 95137 / 371.63 GiB
VG UUID Mgj9le-I3Z2-acFE-qwoL-IUNr-C051-rsG3X5
--- Logical volume ---
LV Path /dev/vg00/lv_root
LV Name lv_root
VG Name vg00
LV UUID dQ68re-B5bN-AjBk-WTdb-O5rw-CpSe-0eH4Jj
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-07-23 10:28:39 +0200
LV Status available
# open 1
LV Size 4.00 GiB
Current LE 1024
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Path /dev/vg00/lv_swap
LV Name lv_swap
VG Name vg00
LV UUID yHKrBb-qDtj-Syj3-g7mv-uNiG-xeNa-bJ6dkq
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-07-23 10:28:43 +0200
LV Status available
# open 1
LV Size 3.88 GiB
Current LE 992
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Physical volumes ---
PV Name /dev/sda2
PV UUID xSYV0W-wOoS-xGze-vNDk-NX9w-sLbj-CLBwnn
PV Status allocatable
Total PE / Free PE 51074 / 43938
PV Name /dev/sdb1
PV UUID wIC3vg-A0B3-eIGX-EJ6j-OSwO-7rhB-9jv1Ym
PV Status allocatable
Total PE / Free PE 51199 / 51199
Now we are good to create new logical volume or extend an existing one. In my case, I'll create new LV in volume group "vg00" with name "lv_backup" and "51199" number of physical extents specified with "-l":
You can also specify LV size with "-L" which requires size in megabyte(M) or gigabyte(G).
# lvcreate vg00 -l 51199 -n lv_backup
Logical volume "lv_backup" created
Current VG status after new LV:
# vgdisplay -v
Finding all volume groups
Finding volume group "vg00"
--- Volume group ---
VG Name vg00
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 10
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 8
Open LV 7
Max PV 0
Cur PV 2
Act PV 2
VG Size 399.50 GiB
PE Size 4.00 MiB
Total PE 102273
Alloc PE / Size 58335 / 227.87 GiB
Free PE / Size 43938 / 171.63 GiB
VG UUID Mgj9le-I3Z2-acFE-qwoL-IUNr-C051-rsG3X5
--- Logical volume ---
LV Path /dev/vg00/lv_root
LV Name lv_root
VG Name vg00
LV UUID dQ68re-B5bN-AjBk-WTdb-O5rw-CpSe-0eH4Jj
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-07-23 10:28:39 +0200
LV Status available
# open 1
LV Size 4.00 GiB
Current LE 1024
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Path /dev/vg00/lv_swap
LV Name lv_swap
VG Name vg00
LV UUID yHKrBb-qDtj-Syj3-g7mv-uNiG-xeNa-bJ6dkq
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-07-23 10:28:43 +0200
LV Status available
# open 1
LV Size 3.88 GiB
Current LE 992
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Logical volume ---
LV Path /dev/vg00/lv_backup
LV Name lv_backup
VG Name vg00
LV UUID OF34Lm-AOmq-l3yu-LxNV-XB3K-kXxy-6hE1hi
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-07-23 10:58:30 +0200
LV Status available
# open 0
LV Size 200.00 GiB
Current LE 51199
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:7
--- Physical volumes ---
PV Name /dev/sda2
PV UUID xSYV0W-wOoS-xGze-vNDk-NX9w-sLbj-CLBwnn
PV Status allocatable
Total PE / Free PE 51074 / 43938
PV Name /dev/sdb1
PV UUID wIC3vg-A0B3-eIGX-EJ6j-OSwO-7rhB-9jv1Ym
PV Status allocatable
Total PE / Free PE 51199 / 0
Now it's time to create file system for our new logical volume "lv_backup". I'll create ext4 type file system:
# mkfs.ext4 /dev/vg00/lv_backup
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
13107200 inodes, 52427776 blocks
2621388 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
1600 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, 7962624, 11239424, 20480000, 23887872
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 25 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
And we are good to mount our new LV and use it. I'll create /backup folder and mount the LV to it:
# mkdir /backup
# mount /dev/vg00/lv_backup /backup/
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg00-lv_root 4.0G 357M 3.4G 10% /
tmpfs 1.9G 0 1.9G 0% /dev/shm
/dev/sda1 485M 39M 421M 9% /boot
/dev/mapper/vg00-lv_backup 197G 188M 187G 1% /backup
Congratulations! Our new LV is seeing by Linux and ready to use.
To make it auto mounted during boot, we will add an corresponding entry in /etc/fstab file.
Last line has been added to the file:
# vim /etc/fstab
#
# /etc/fstab
# Created by anaconda on Thu Jul 23 10:29:06 2013
#
# 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/vg00-lv_root / ext4 defaults 1 1
UUID=11b5567d-6f29-49b7-9ec7-27f6b3d56f27 /boot ext4 defaults 1 2 1 2
/dev/mapper/vg00-lv_swap swap 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 proc defaults 0 0
/dev/vg00/lv_backup /backup ext4 defaults 1 2
And there you have it.
# lvcreate vg00 -l 51199 -n lv_backup
Logical volume "lv_backup" created
Current VG status after new LV:
# vgdisplay -v
Finding all volume groups
Finding volume group "vg00"
--- Volume group ---
VG Name vg00
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 10
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 8
Open LV 7
Max PV 0
Cur PV 2
Act PV 2
VG Size 399.50 GiB
PE Size 4.00 MiB
Total PE 102273
Alloc PE / Size 58335 / 227.87 GiB
Free PE / Size 43938 / 171.63 GiB
VG UUID Mgj9le-I3Z2-acFE-qwoL-IUNr-C051-rsG3X5
--- Logical volume ---
LV Path /dev/vg00/lv_root
LV Name lv_root
VG Name vg00
LV UUID dQ68re-B5bN-AjBk-WTdb-O5rw-CpSe-0eH4Jj
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-07-23 10:28:39 +0200
LV Status available
# open 1
LV Size 4.00 GiB
Current LE 1024
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Path /dev/vg00/lv_swap
LV Name lv_swap
VG Name vg00
LV UUID yHKrBb-qDtj-Syj3-g7mv-uNiG-xeNa-bJ6dkq
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-07-23 10:28:43 +0200
LV Status available
# open 1
LV Size 3.88 GiB
Current LE 992
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Logical volume ---
LV Path /dev/vg00/lv_backup
LV Name lv_backup
VG Name vg00
LV UUID OF34Lm-AOmq-l3yu-LxNV-XB3K-kXxy-6hE1hi
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2013-07-23 10:58:30 +0200
LV Status available
# open 0
LV Size 200.00 GiB
Current LE 51199
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:7
--- Physical volumes ---
PV Name /dev/sda2
PV UUID xSYV0W-wOoS-xGze-vNDk-NX9w-sLbj-CLBwnn
PV Status allocatable
Total PE / Free PE 51074 / 43938
PV Name /dev/sdb1
PV UUID wIC3vg-A0B3-eIGX-EJ6j-OSwO-7rhB-9jv1Ym
PV Status allocatable
Total PE / Free PE 51199 / 0
Now it's time to create file system for our new logical volume "lv_backup". I'll create ext4 type file system:
# mkfs.ext4 /dev/vg00/lv_backup
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
13107200 inodes, 52427776 blocks
2621388 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
1600 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, 7962624, 11239424, 20480000, 23887872
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 25 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
And we are good to mount our new LV and use it. I'll create /backup folder and mount the LV to it:
# mkdir /backup
# mount /dev/vg00/lv_backup /backup/
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg00-lv_root 4.0G 357M 3.4G 10% /
tmpfs 1.9G 0 1.9G 0% /dev/shm
/dev/sda1 485M 39M 421M 9% /boot
/dev/mapper/vg00-lv_backup 197G 188M 187G 1% /backup
To make it auto mounted during boot, we will add an corresponding entry in /etc/fstab file.
Last line has been added to the file:
# vim /etc/fstab
#
# /etc/fstab
# Created by anaconda on Thu Jul 23 10:29:06 2013
#
# 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/vg00-lv_root / ext4 defaults 1 1
UUID=11b5567d-6f29-49b7-9ec7-27f6b3d56f27 /boot ext4 defaults 1 2 1 2
/dev/mapper/vg00-lv_swap swap 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 proc defaults 0 0
/dev/vg00/lv_backup /backup ext4 defaults 1 2
And there you have it.
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