[root@localhost ~]# fdisk -l
Disk /dev/hda: 1073 MB, 1073741824 bytes
16 heads, 63 sectors/track, 2080 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Disk /dev/hda doesn't contain a valid partition table
Disk /dev/sdb: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sdc: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdc doesn't contain a valid partition table
[root@localhost ~]# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. 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): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-130, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-130, default 130):
Using default value 130
Command (m for help): p
Disk /dev/sdb: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 130 1044193+ 83 Linux
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): 8e
Changed system type of partition 1 to 8e (Linux LVM)
Command (m for help): p
Disk /dev/sdb: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 130 1044193+ 8e Linux LVM
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# fdisk /dev/hda
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-2080, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-2080, default 2080):
Using default value 2080
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): 8e
Changed system type of partition 1 to 8e (Linux LVM)
Command (m for help): p
Disk /dev/hda: 1073 MB, 1073741824 bytes
16 heads, 63 sectors/track, 2080 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Device Boot Start End Blocks Id System
/dev/hda1 1 2080 1048288+ 8e Linux LVM
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# fdisk /dev/sdc
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-261, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-261, default 261): +500M
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (63-261, default 63):
Using default value 63
Last cylinder or +size or +sizeM or +sizeK (63-261, default 261): +100M
Command (m for help): n
Command action
e extended
p primary partition (1-4)
e
Partition number (1-4): 4
First cylinder (76-261, default 76):
Using default value 76
Last cylinder or +size or +sizeM or +sizeK (76-261, default 261):
Using default value 261
Command (m for help): p
Disk /dev/sdc: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 1 62 497983+ 83 Linux
/dev/sdc2 63 75 104422+ 83 Linux
/dev/sdc4 76 261 1494045 5 Extended
Command (m for help): n
Command action
l logical (5 or over)
p primary partition (1-4)
l
First cylinder (76-261, default 76):
Using default value 76
Last cylinder or +size or +sizeM or +sizeK (76-261, default 261): +100M
Command (m for help): n
Command action
l logical (5 or over)
p primary partition (1-4)
l
First cylinder (89-261, default 89):
Using default value 89
Last cylinder or +size or +sizeM or +sizeK (89-261, default 261): +100M
Command (m for help): n
Command action
l logical (5 or over)
p primary partition (1-4)
l
First cylinder (102-261, default 102):
Using default value 102
Last cylinder or +size or +sizeM or +sizeK (102-261, default 261): +100M
Command (m for help): p
Disk /dev/sdc: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 1 62 497983+ 83 Linux
/dev/sdc2 63 75 104422+ 83 Linux
/dev/sdc4 76 261 1494045 5 Extended
/dev/sdc5 76 88 104391 83 Linux
/dev/sdc6 89 101 104391 83 Linux
/dev/sdc7 102 114 104391 83 Linux
Command (m for help): t
Partition number (1-7): 1
Hex code (type L to list codes): l
0 Empty 1e Hidden W95 FAT1 80 Old Minix be Solaris boot
1 FAT12 24 NEC DOS 81 Minix / old Lin bf Solaris
2 XENIX root 39 Plan 9 82 Linux swap / So c1 DRDOS/sec (FAT-
3 XENIX usr 3c PartitionMagic 83 Linux c4 DRDOS/sec (FAT-
4 FAT16 <32M 40 Venix 80286 84 OS/2 hidden C: c6 DRDOS/sec (FAT-
5 Extended 41 PPC PReP Boot 85 Linux extended c7 Syrinx
6 FAT16 42 SFS 86 NTFS volume set da Non-FS data
7 HPFS/NTFS 4d QNX4.x 87 NTFS volume set db CP/M / CTOS / .
8 AIX 4e QNX4.x 2nd part 88 Linux plaintext de Dell Utility
9 AIX bootable 4f QNX4.x 3rd part 8e Linux LVM df BootIt
a OS/2 Boot Manag 50 OnTrack DM 93 Amoeba e1 DOS access
b W95 FAT32 51 OnTrack DM6 Aux 94 Amoeba BBT e3 DOS R/O
c W95 FAT32 (LBA) 52 CP/M 9f BSD/OS e4 SpeedStor
e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi eb BeOS fs
f W95 Ext'd (LBA) 54 OnTrackDM6 a5 FreeBSD ee EFI GPT
10 OPUS 55 EZ-Drive a6 OpenBSD ef EFI (FAT-12/16/
11 Hidden FAT12 56 Golden Bow a7 NeXTSTEP f0 Linux/PA-RISC b
12 Compaq diagnost 5c Priam Edisk a8 Darwin UFS f1 SpeedStor
14 Hidden FAT16 <3 61 SpeedStor a9 NetBSD f4 SpeedStor
16 Hidden FAT16 63 GNU HURD or Sys ab Darwin boot f2 DOS secondary
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fd Linux raid auto
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fe LANstep
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid ff BBT
1c Hidden W95 FAT3 75 PC/IX
Command (m for help): t
Partition number (1-7): 1
Hex code (type L to list codes): 8e
Changed system type of partition 1 to 8e (Linux LVM)
Command (m for help): t
Partition number (1-7): 2
Hex code (type L to list codes): 8e
Changed system type of partition 2 to 8e (Linux LVM)
Command (m for help): t
Partition number (1-7): 5
Hex code (type L to list codes): 8e
Changed system type of partition 5 to 8e (Linux LVM)
Command (m for help): t
Partition number (1-7): 6
Hex code (type L to list codes): 8e
Changed system type of partition 6 to 8e (Linux LVM)
Command (m for help): t
Partition number (1-7): 7
Hex code (type L to list codes): 8e
Changed system type of partition 7 to 8e (Linux LVM)
Command (m for help): p
Disk /dev/sdc: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 1 62 497983+ 8e Linux LVM
/dev/sdc2 63 75 104422+ 8e Linux LVM
/dev/sdc4 76 261 1494045 5 Extended
/dev/sdc5 76 88 104391 8e Linux LVM
/dev/sdc6 89 101 104391 8e Linux LVM
/dev/sdc7 102 114 104391 8e Linux LVM
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# fdisk -l
Disk /dev/hda: 1073 MB, 1073741824 bytes
16 heads, 63 sectors/track, 2080 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Device Boot Start End Blocks Id System
/dev/hda1 1 2080 1048288+ 8e Linux LVM
Disk /dev/sda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 130 1044193+ 8e Linux LVM
Disk /dev/sdc: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 1 62 497983+ 8e Linux LVM
/dev/sdc2 63 75 104422+ 8e Linux LVM
/dev/sdc4 76 261 1494045 5 Extended
/dev/sdc5 76 88 104391 8e Linux LVM
/dev/sdc6 89 101 104391 8e Linux LVM
/dev/sdc7 102 114 104391 8e Linux LVM
[root@localhost ~]# pvcreate /dev/hda1
Physical volume "/dev/hda1" successfully created
[root@localhost ~]# pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created
[root@localhost ~]# pvcreate /dev/sdc1
Physical volume "/dev/sdc1" successfully created
[root@localhost ~]# pvcreate /dev/sdc2
Physical volume "/dev/sdc2" successfully created
[root@localhost ~]# pvcreate /dev/sdc5
Physical volume "/dev/sdc5" successfully created
[root@localhost ~]# pvcreate /dev/sdc6
Physical volume "/dev/sdc6" successfully created
[root@localhost ~]# pvcreate /dev/sdc7
Physical volume "/dev/sdc7" successfully created
[root@localhost ~]# pvscan
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
PV /dev/hda1 lvm2 [1023.72 MB]
PV /dev/sdb1 lvm2 [1019.72 MB]
PV /dev/sdc1 lvm2 [486.31 MB]
PV /dev/sdc2 lvm2 [101.98 MB]
PV /dev/sdc5 lvm2 [101.94 MB]
PV /dev/sdc6 lvm2 [101.94 MB]
PV /dev/sdc7 lvm2 [101.94 MB]
Total: 8 [10.74 GB] / in use: 1 [7.88 GB] / in no VG: 7 [2.87 GB]
[root@localhost ~]# pvdisplay /dev/hda1
"/dev/hda1" is a new physical volume of "1023.72 MB"
--- NEW Physical volume ---
PV Name /dev/hda1
VG Name
PV Size 1023.72 MB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID 9botjL-aicU-NQBw-ttjA-NR4D-x8yD-Iq4fEF
[root@localhost ~]# pvdisplay /dev/sdb1
"/dev/sdb1" is a new physical volume of "1019.72 MB"
--- NEW Physical volume ---
PV Name /dev/sdb1
VG Name
PV Size 1019.72 MB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID 1ZuJ1K-vjsa-eBMR-la2C-rhbg-C5H5-OckpZO
[root@localhost ~]# pvdisplay /dev/sdc1
"/dev/sdc1" is a new physical volume of "486.31 MB"
--- NEW Physical volume ---
PV Name /dev/sdc1
VG Name
PV Size 486.31 MB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID K213Ir-kjNj-mnUf-DEJa-Nq68-C1g0-0Up3eO
[root@localhost ~]# pvdisplay /dev/sdc2
"/dev/sdc2" is a new physical volume of "101.98 MB"
--- NEW Physical volume ---
PV Name /dev/sdc2
VG Name
PV Size 101.98 MB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID l8H4uF-rCSG-Src7-PyFR-TF1k-lYBQ-NHxpQl
[root@localhost ~]# pvdisplay /dev/sdc5
"/dev/sdc5" is a new physical volume of "101.94 MB"
--- NEW Physical volume ---
PV Name /dev/sdc5
VG Name
PV Size 101.94 MB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID 493Rod-bOgB-kj4a-OX08-waDP-Epf4-sg96up
[root@localhost ~]# pvdisplay /dev/sdc6
"/dev/sdc6" is a new physical volume of "101.94 MB"
--- NEW Physical volume ---
PV Name /dev/sdc6
VG Name
PV Size 101.94 MB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID edXRlb-a3t1-ZAok-a53V-wmqi-P6bJ-UfjIO8
[root@localhost ~]# pvdisplay /dev/sdc7
"/dev/sdc7" is a new physical volume of "101.94 MB"
--- NEW Physical volume ---
PV Name /dev/sdc7
VG Name
PV Size 101.94 MB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID 8YwWMc-ou8j-nbuF-UGxw-cNiB-JzJh-FoMhN9
[root@localhost ~]# vgcreate demoVG1 /dev/hda1 /dev/sdb1
Volume group "demoVG1" successfully created
[root@localhost ~]# vgscan
Reading all physical volumes. This may take a while...
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
Found volume group "demoVG1" using metadata type lvm2
[root@localhost ~]# vgdisplay
--- Volume group ---
VG Name demoVG1
System ID
Format lvm2
Metadata Areas 2
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 2
Act PV 2
VG Size 1.99 GB
PE Size 4.00 MB
Total PE 509
Alloc PE / Size 0 / 0
Free PE / Size 509 / 1.99 GB
VG UUID fWjE08-2E1k-SDGO-wAoA-lo1G-m5zk-OhZ8w5
[root@localhost ~]# pvscan
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
PV /dev/hda1 VG demoVG1 lvm2 [1020.00 MB / 1020.00 MB free]
PV /dev/sdb1 VG demoVG1 lvm2 [1016.00 MB / 1016.00 MB free]
PV /dev/sdc1 lvm2 [486.31 MB]
PV /dev/sdc2 lvm2 [101.98 MB]
PV /dev/sdc5 lvm2 [101.94 MB]
PV /dev/sdc6 lvm2 [101.94 MB]
PV /dev/sdc7 lvm2 [101.94 MB]
Total: 8 [10.74 GB] / in use: 3 [9.86 GB] / in no VG: 5 [894.12 MB]
[root@localhost ~]# vgextend demoVG1 /dev/sdc1
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
Volume group "demoVG1" successfully extended
[root@localhost ~]# pvscan
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
PV /dev/hda1 VG demoVG1 lvm2 [1020.00 MB / 1020.00 MB free]
PV /dev/sdb1 VG demoVG1 lvm2 [1016.00 MB / 1016.00 MB free]
PV /dev/sdc1 VG demoVG1 lvm2 [484.00 MB / 484.00 MB free]
PV /dev/sdc2 lvm2 [101.98 MB]
PV /dev/sdc5 lvm2 [101.94 MB]
PV /dev/sdc6 lvm2 [101.94 MB]
PV /dev/sdc7 lvm2 [101.94 MB]
Total: 8 [10.73 GB] / in use: 4 [10.34 GB] / in no VG: 4 [407.81 MB]
[root@localhost ~]# vgreduce demoVG1 /dev/sdc1
Removed "/dev/sdc1" from volume group "demoVG1"
[root@localhost ~]# pvscan
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
PV /dev/hda1 VG demoVG1 lvm2 [1020.00 MB / 1020.00 MB free]
PV /dev/sdb1 VG demoVG1 lvm2 [1016.00 MB / 1016.00 MB free]
PV /dev/sdc1 lvm2 [486.31 MB]
PV /dev/sdc2 lvm2 [101.98 MB]
PV /dev/sdc5 lvm2 [101.94 MB]
PV /dev/sdc6 lvm2 [101.94 MB]
PV /dev/sdc7 lvm2 [101.94 MB]
Total: 8 [10.74 GB] / in use: 3 [9.86 GB] / in no VG: 5 [894.12 MB]
[root@localhost ~]# vgcreate demoVG2 /dev/sdc1 /dev/sdc2
Volume group "demoVG2" successfully created
[root@localhost ~]# vgcreate demoVG3 /dev/sdc5 /dev/sdc6 /dev/sdc7
Volume group "demoVG3" successfully created
[root@localhost ~]# pvscan
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
PV /dev/sdc5 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc6 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc7 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc1 VG demoVG2 lvm2 [484.00 MB / 484.00 MB free]
PV /dev/sdc2 VG demoVG2 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/hda1 VG demoVG1 lvm2 [1020.00 MB / 1020.00 MB free]
PV /dev/sdb1 VG demoVG1 lvm2 [1016.00 MB / 1016.00 MB free]
Total: 8 [10.73 GB] / in use: 8 [10.73 GB] / in no VG: 0 [0 ]
[root@localhost ~]# vgscan
Reading all physical volumes. This may take a while...
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
Found volume group "demoVG3" using metadata type lvm2
Found volume group "demoVG2" using metadata type lvm2
Found volume group "demoVG1" using metadata type lvm2
[root@localhost ~]# vgdisplay
--- Volume group ---
VG Name demoVG3
System ID
Format lvm2
Metadata Areas 3
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 3
Act PV 3
VG Size 300.00 MB
PE Size 4.00 MB
Total PE 75
Alloc PE / Size 0 / 0
Free PE / Size 75 / 300.00 MB
VG UUID gr7ahD-L0b6-veck-FdsY-p6HX-1ke5-u0Zk42
--- Volume group ---
VG Name demoVG2
System ID
Format lvm2
Metadata Areas 2
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 2
Act PV 2
VG Size 584.00 MB
PE Size 4.00 MB
Total PE 146
Alloc PE / Size 0 / 0
Free PE / Size 146 / 584.00 MB
VG UUID wbAcsY-bSF8-i0Id-5yx9-WlvX-hZrj-pCD31u
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size 7.88 GB
PE Size 32.00 MB
Total PE 252
Alloc PE / Size 252 / 7.88 GB
Free PE / Size 0 / 0
VG UUID WhW6vs-ocAk-qGas-tjXU-zMLC-q9SP-bvTg7Z
--- Volume group ---
VG Name demoVG1
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 2
Act PV 2
VG Size 1.99 GB
PE Size 4.00 MB
Total PE 509
Alloc PE / Size 0 / 0
Free PE / Size 509 / 1.99 GB
VG UUID fWjE08-2E1k-SDGO-wAoA-lo1G-m5zk-OhZ8w5
[root@localhost ~]# lvcreate -L 200m -n demoLV1 demoVG1
Logical volume "demoLV1" created
[root@localhost ~]# lvscan
ACTIVE '/dev/demoVG1/demoLV1' [200.00 MB] inherit
[root@localhost ~]# lvextend -L +200m /dev/demoVG1/demoLV1
Extending logical volume demoLV1 to 400.00 MB
Logical volume demoLV1 successfully resized
[root@localhost ~]# lvscan
ACTIVE '/dev/demoVG1/demoLV1' [400.00 MB] inherit
[root@localhost ~]# mkfs.ext3 /dev/demoVG1/demoLV1
mke2fs 1.39 (29-May-2006)
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
102400 inodes, 409600 blocks
20480 blocks (5.00%) reserved for the super user
First data block=1
Maximum filesystem blocks=67633152
50 block groups
8192 blocks per group, 8192 fragments per group
2048 inodes per group
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
Writing inode tables: done
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 24 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@localhost /]# mkdir storage
[root@localhost /]# mount /dev/demoVG1/demoLV1 /storage/
[root@localhost /]# df -lh
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol01
5.7G 2.3G 3.2G 42% /
/dev/sda1 99M 19M 75M 20% /boot
tmpfs 233M 0 233M 0% /dev/shm
/dev/mapper/demoVG1-demoLV1
388M 11M 358M 3% /storage
[root@localhost /]# mount
/dev/mapper/demoVG1-demoLV1 on /storage type ext3 (rw)
[root@localhost /]# cat /etc/fstab
/dev/mapper/demoVG1-demoLV1 /storage ext3 defaults 0 0
[root@localhost /]# lvextend -L +200m /dev/demoVG1/demoLV1
Extending logical volume demoLV1 to 600.00 MB
Logical volume demoLV1 successfully resized
[root@localhost storage]# pvscan
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
PV /dev/sdc5 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc6 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc7 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc1 VG demoVG2 lvm2 [484.00 MB / 484.00 MB free]
PV /dev/sdc2 VG demoVG2 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/hda1 VG demoVG1 lvm2 [1020.00 MB / 20.00 MB free]
PV /dev/sdb1 VG demoVG1 lvm2 [1016.00 MB / 1016.00 MB free]
Total: 8 [10.73 GB] / in use: 8 [10.73 GB] / in no VG: 0 [0 ]
[root@localhost storage]# lvscan
ACTIVE '/dev/demoVG1/demoLV1' [1000.00 MB] inherit
[root@localhost storage]# df -lh
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol01
5.7G 2.3G 3.2G 42% /
/dev/sda1 99M 19M 75M 20% /boot
tmpfs 233M 0 233M 0% /dev/shm
/dev/mapper/demoVG1-demoLV1
787M 17M 733M 3% /storage
[root@localhost storage]# resize2fs /dev/demoVG1/demoLV1
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/demoVG1/demoLV1 is mounted on /storage; on-line resizing required
Performing an on-line resize of /dev/demoVG1/demoLV1 to 256000 (4k) blocks.
The filesystem on /dev/demoVG1/demoLV1 is now 256000 blocks long.
[root@localhost storage]# df -lh
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol01
5.7G 2.3G 3.2G 42% /
/dev/sda1 99M 19M 75M 20% /boot
tmpfs 233M 0 233M 0% /dev/shm
/dev/mapper/demoVG1-demoLV1
985M 17M 925M 2% /storage
[root@localhost storage]# pvscan
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
PV /dev/sdc5 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc6 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc7 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc1 VG demoVG2 lvm2 [484.00 MB / 484.00 MB free]
PV /dev/sdc2 VG demoVG2 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/hda1 VG demoVG1 lvm2 [1020.00 MB / 20.00 MB free]
PV /dev/sdb1 VG demoVG1 lvm2 [1016.00 MB / 1016.00 MB free]
Total: 8 [10.73 GB] / in use: 8 [10.73 GB] / in no VG: 0 [0 ]
[root@localhost storage]# vgscan
Reading all physical volumes. This may take a while...
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
Found volume group "demoVG3" using metadata type lvm2
Found volume group "demoVG2" using metadata type lvm2
Found volume group "demoVG1" using metadata type lvm2
[root@localhost storage]# lvscan
ACTIVE '/dev/demoVG1/demoLV1' [1000.00 MB] inherit
[root@localhost storage]# lvextend -L +200m /dev/demoVG1/demoLV1
Extending logical volume demoLV1 to 1.17 GB
Logical volume demoLV1 successfully resized
[root@localhost storage]# resize2fs /dev/demoVG1/demoLV1
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/demoVG1/demoLV1 is mounted on /storage; on-line resizing required
Performing an on-line resize of /dev/demoVG1/demoLV1 to 307200 (4k) blocks.
The filesystem on /dev/demoVG1/demoLV1 is now 307200 blocks long.
[root@localhost storage]# df -lh
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol01
5.7G 2.3G 3.2G 42% /
/dev/sda1 99M 19M 75M 20% /boot
tmpfs 233M 0 233M 0% /dev/shm
/dev/mapper/demoVG1-demoLV1
1.2G 17M 1.1G 2% /storage
[root@localhost storage]# pvscan
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
PV /dev/sdc5 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc6 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc7 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc1 VG demoVG2 lvm2 [484.00 MB / 484.00 MB free]
PV /dev/sdc2 VG demoVG2 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/hda1 VG demoVG1 lvm2 [1020.00 MB / 0 free]
PV /dev/sdb1 VG demoVG1 lvm2 [1016.00 MB / 836.00 MB free]
Total: 8 [10.73 GB] / in use: 8 [10.73 GB] / in no VG: 0 [0 ]
[root@localhost storage]# fdisk -l /dev/sdc
Disk /dev/sdc: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 1 62 497983+ 8e Linux LVM
/dev/sdc2 63 75 104422+ 8e Linux LVM
/dev/sdc4 76 261 1494045 5 Extended
/dev/sdc5 76 88 104391 8e Linux LVM
/dev/sdc6 89 101 104391 8e Linux LVM
/dev/sdc7 102 114 104391 8e Linux LVM
[root@localhost storage]# fdisk /dev/sdc
Command (m for help): n
Command action
l logical (5 or over)
p primary partition (1-4)
l
First cylinder (115-261, default 115):
Using default value 115
Last cylinder or +size or +sizeM or +sizeK (115-261, default 261):
Using default value 261
Command (m for help): p
Disk /dev/sdc: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 1 62 497983+ 8e Linux LVM
/dev/sdc2 63 75 104422+ 8e Linux LVM
/dev/sdc4 76 261 1494045 5 Extended
/dev/sdc5 76 88 104391 8e Linux LVM
/dev/sdc6 89 101 104391 8e Linux LVM
/dev/sdc7 102 114 104391 8e Linux LVM
/dev/sdc8 115 261 1180746 83 Linux
Command (m for help): t
Partition number (1-8): 8
Hex code (type L to list codes): 8e
Changed system type of partition 8 to 8e (Linux LVM)
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost storage]# vgscan
Reading all physical volumes. This may take a while...
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
Found volume group "demoVG3" using metadata type lvm2
Found volume group "demoVG2" using metadata type lvm2
Found volume group "demoVG1" using metadata type lvm2
[root@localhost storage]# pvscan
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
PV /dev/sdc5 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc6 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc7 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc1 VG demoVG2 lvm2 [484.00 MB / 484.00 MB free]
PV /dev/sdc2 VG demoVG2 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sda2 VG VolGroup00 lvm2 [7.88 GB / 0 free]
PV /dev/hda1 VG demoVG1 lvm2 [1020.00 MB / 0 free]
PV /dev/sdb1 VG demoVG1 lvm2 [1016.00 MB / 836.00 MB free]
Total: 8 [10.73 GB] / in use: 8 [10.73 GB] / in no VG: 0 [0 ]
[root@localhost storage]# pvcreate /dev/sdc8
Physical volume "/dev/sdc8" successfully created
[root@localhost storage]# pvscan
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
PV /dev/sdc5 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc6 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc7 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc1 VG demoVG2 lvm2 [484.00 MB / 484.00 MB free]
PV /dev/sdc2 VG demoVG2 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/hda1 VG demoVG1 lvm2 [1020.00 MB / 0 free]
PV /dev/sdb1 VG demoVG1 lvm2 [1016.00 MB / 836.00 MB free]
PV /dev/sdc8 lvm2 [1.13 GB]
Total: 9 [11.85 GB] / in use: 8 [10.73 GB] / in no VG: 1 [1.13 GB]
[root@localhost storage]# vgextend demoVG1 /dev/sdc8
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
Volume group "demoVG1" successfully extended
[root@localhost storage]# vgscan
Reading all physical volumes. This may take a while...
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
Found volume group "demoVG3" using metadata type lvm2
Found volume group "demoVG2" using metadata type lvm2
Found volume group "demoVG1" using metadata type lvm2
[root@localhost storage]# pvscan
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
PV /dev/sdc5 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc6 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc7 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc1 VG demoVG2 lvm2 [484.00 MB / 484.00 MB free]
PV /dev/sdc2 VG demoVG2 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/hda1 VG demoVG1 lvm2 [1020.00 MB / 0 free]
PV /dev/sdb1 VG demoVG1 lvm2 [1016.00 MB / 836.00 MB free]
PV /dev/sdc8 VG demoVG1 lvm2 [1.12 GB / 1.12 GB free]
Total: 9 [11.85 GB] / in use: 9 [11.85 GB] / in no VG: 0 [0 ]
[root@localhost storage]# lvextend -L +1000m /dev/demoVG1/demoLV1
Extending logical volume demoLV1 to 2.15 GB
Logical volume demoLV1 successfully resized
[root@localhost storage]# resize2fs /dev/demoVG1/demoLV1
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/demoVG1/demoLV1 is mounted on /storage; on-line resizing required
Performing an on-line resize of /dev/demoVG1/demoLV1 to 563200 (4k) blocks.
The filesystem on /dev/demoVG1/demoLV1 is now 563200 blocks long.
[root@localhost storage]# df -lh
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol01
5.7G 2.3G 3.2G 42% /
/dev/sda1 99M 19M 75M 20% /boot
tmpfs 233M 0 233M 0% /dev/shm
/dev/mapper/demoVG1-demoLV1
2.2G 17M 2.1G 1% /storage
[root@localhost storage]# pvscan
/dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
PV /dev/sdc5 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc6 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc7 VG demoVG3 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sdc1 VG demoVG2 lvm2 [484.00 MB / 484.00 MB free]
PV /dev/sdc2 VG demoVG2 lvm2 [100.00 MB / 100.00 MB free]
PV /dev/sda2 VG VolGroup00 lvm2 [7.88 GB / 0 free]
PV /dev/hda1 VG demoVG1 lvm2 [1020.00 MB / 0 free]
PV /dev/sdb1 VG demoVG1 lvm2 [1016.00 MB / 0 free]
PV /dev/sdc8 VG demoVG1 lvm2 [1.12 GB / 988.00 MB free]
Total: 9 [11.85 GB] / in use: 9 [11.85 GB] / in no VG: 0 [0 ]
