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CentOS 6.5 LVM磁盘管理学习 |
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[root@hadoop01 ~] # df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg51cto_lv-LogVol01 9.9G 1.2G 8.2G 13% /
tmpfs 495M 0 495M 0% /dev/shm
/dev/sda1 194M 29M 155M 16% /boot
/dev/mapper/vg51cto_lv-LogVol03 20G 172M 19G 1% /data
/dev/mapper/vg51cto_lv-LogVol02 5.0G 138M 4.6G 3% /home
/dev/mapper/vg51cto_lv-LogVol04 23G 173M 22G 1% /usr/local
[root@hadoop01 ~] # vgscan
Reading allphysical volumes. This may take awhile...
Foundvolume group "vg51cto_lv" using metadata type lvm2
[root@hadoop01 ~] # vgdisplay -v vg51cto_lv
Usingvolume group(s) on command line
Findingvolume group "vg51cto_lv"
--- Volumegroup ---
VGName vg51cto_lv
SystemID
Format lvm2
MetadataAreas 1
MetadataSequence No 6
VGAccess read /write
VGStatus resizable
MAX LV 0
Cur LV 5
OpenLV 5
Max PV 0
Cur PV 1
Act PV 1
VGSize 59.80 GiB
PESize 4.00 MiB
TotalPE 15309
Alloc PE /Size 15309 / 59.80 GiB
Free PE / Size 0 / 0
VGUUID uF4S1y-21AZ-KOfs-rNIF-lFmN-wQ75-2sX7F1
--- Logicalvolume ---
LVPath /dev/vg51cto_lv/LogVol04
LVName LogVol04
VGName vg51cto_lv
LVUUID rvOZeO-Oz2G-wx7Z-u0b6-CvXj-FKEj-RwCLXO
LV WriteAccess read /write
LV Creationhost, time hadoop01, 2015-11-05 17:30:51 +0800
LVStatus available
# open 1
LVSize 22.80 GiB
CurrentLE 5837
Segments 1
Allocation inherit
Read aheadsectors auto
- currentlyset to 256
Blockdevice 253:2
--- Logicalvolume ---
LVPath /dev/vg51cto_lv/LogVol01
LVName LogVol01
VGName vg51cto_lv
LVUUID d6YKrd-fWMJ-x61I-cfWG-v2me-Hn8V-xdm96L
LV WriteAccess read /write
LV Creationhost, time hadoop01, 2015-11-05 17:30:56 +0800
LVStatus available
# open 1
LVSize 10.00 GiB
CurrentLE 2560
Segments 1
Allocation inherit
Read aheadsectors auto
- currentlyset to 256
Blockdevice 253:0
--- Logicalvolume ---
LVPath /dev/vg51cto_lv/LogVol00
LVName LogVol00
VGName vg51cto_lv
LVUUID hSyH2r-mvMV-th7q-geKg-sVpm-O1zJ-D6DwT8
LV WriteAccess read /write
LV Creationhost, time hadoop01, 2015-11-05 17:30:58 +0800
LVStatus available
# open 1
LVSize 2.00 GiB
CurrentLE 512
Segments 1
Allocation inherit
Read aheadsectors auto
- currentlyset to 256
Blockdevice 253:1
--- Logicalvolume ---
LVPath /dev/vg51cto_lv/LogVol03
LVName LogVol03
VGName vg51cto_lv
LVUUID gKHLfz-O5Lm-TGMq-2LcF-xcH1-ASea-QCVVNc
LV WriteAccess read /write
LV Creationhost, time hadoop01, 2015-11-05 17:30:58 +0800
LVStatus available
# open 1
LVSize 20.00 GiB
CurrentLE 5120
Segments 1
Allocation inherit
Read aheadsectors auto
- currentlyset to 256
Blockdevice 253:3
--- Logicalvolume ---
LVPath /dev/vg51cto_lv/LogVol02
LVName LogVol02
VGName vg51cto_lv
LVUUID lkqKmO-Dt0u-3CnB-UqeD-d6gc-2rmP-gWtKVp
LV WriteAccess read /write
LV Creationhost, time hadoop01, 2015-11-05 17:31:00 +0800
LVStatus available
# open 1
LVSize 5.00 GiB
CurrentLE 1280
Segments 1
Allocation inherit
Read aheadsectors auto
- currentlyset to 256
Blockdevice 253:4
---Physical volumes ---
PV Name /dev/sda2
PVUUID pKC6SA-fkfe-OAl2-scVr-tq0h-EAXD-AWpwgX
PVStatus allocatable
Total PE /Free PE 15309 / 0
[root@hadoop01 ~] # vgrename vg51cto_lv vg51cto
Volumegroup "vg51cto_lv" successfully renamed to "vg51cto"
[root@hadoop01 ~] # vim /etc/fstab
#
# /etc/fstab
# Created by anaconda on Thu Nov 5 17:33:46 2015
#
# Accessible filesystems, by reference, aremaintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8)and/or blkid(8) for more info
#
/dev/mapper/vg51cto-LogVol01 / ext4 defaults 1 1
UUID=9c02e519-3b85-4918-b9fd-395535cab496 /boot ext4 defaults 1 2
/dev/mapper/vg51cto-LogVol03 /data ext4 defaults 1 2
/dev/mapper/vg51cto-LogVol02 /home ext4 defaults 1 2
/dev/mapper/vg51cto-LogVol04 /usr/local ext4 defaults 1 2
/dev/mapper/vg51cto-LogVol00 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
[root@hadoop01 ~] # vim /etc/grub.conf
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub aftermaking changes to this file
# NOTICE: You have a /boot partition. Thismeans that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/mapper/vg51cto_lv-LogVol01
# initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0) /grub/splash .xpm.gz
hiddenmenu
title CentOS (2.6.32-431.el6.x86_64)
root(hd0,0)
kernel /vmlinuz-2 .6.32-431.el6.x86_64 ro root= /dev/mapper/vg51cto-LogVol01 rd_NO_LUKSrd_LVM_LV=vg51cto /LogVol01 rd_LVM_LV=vg51cto /LogVol00 rd_NO_MD crashkernel=autoLANG=zh_CN.UTF-8 KEYBOARDTYPE=pcKEYTABLE=us rd_NO_DM rhgb quiet
initrd /initramfs-2 .6.32-431.el6.x86_64.img
[root@hadoop01 ~] # df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg51cto-LogVol01 9.9G 1.2G 8.2G 13% /
tmpfs 495M 0 495M 0% /dev/shm
/dev/sda1 194M 29M 155M 16% /boot
/dev/mapper/vg51cto-LogVol03 20G 172M 19G 1% /data
/dev/mapper/vg51cto-LogVol02 5.0G 138M 4.6G 3% /home
/dev/mapper/vg51cto-LogVol04 23G 173M 22G 1% /usr/local
[root@hadoop01 ~] # lvscan
ACTIVE '/dev/vg51cto/LogVol04' [22.80 GiB]inherit
ACTIVE '/dev/vg51cto/LogVol01' [10.00 GiB]inherit
ACTIVE '/dev/vg51cto/LogVol00' [2.00 GiB]inherit
ACTIVE '/dev/vg51cto/LogVol03' [20.00 GiB]inherit
ACTIVE '/dev/vg51cto/LogVol02' [5.00 GiB]inherit
[root@hadoop01 ~] # lvdisplay /dev/vg51cto/LogVol00
--- Logicalvolume ---
LVPath /dev/vg51cto/LogVol00
LVName LogVol00
VGName vg51cto
LVUUID hSyH2r-mvMV-th7q-geKg-sVpm-O1zJ-D6DwT8
LV WriteAccess read /write
LV Creationhost, time hadoop01, 2015-11-05 17:30:58 +0800
LVStatus available
# open 1
LVSize 2.00 GiB
CurrentLE 512
Segments 1
Allocation inherit
Read aheadsectors auto
- currentlyset to 256
Block device 253:1
lvrename OldLogicalVolumePath NewLogicalVolumePath
[root@hadoop01 ~] # lvrename /dev/vg51cto/LogVol00 /dev/vg51cto/lv_swap
Renamed "LogVol00" to "lv_swap" in volume group "vg51cto"
[root@hadoop01 ~] # lvrename /dev/vg51cto/LogVol01 /dev/vg51cto/lv_root
Renamed "LogVol01" to "lv_root" in volume group "vg51cto"
[root@hadoop01 ~] # lvrename /dev/vg51cto/LogVol02 /dev/vg51cto/lv_home
Renamed "LogVol02" to "lv_home" in volume group "vg51cto"
[root@hadoop01 ~] # lvrename /dev/vg51cto/LogVol03 /dev/vg51cto/lv_data
Renamed "LogVol03" to "lv_data" in volume group "vg51cto"
[root@hadoop01 ~] # lvrename /dev/vg51cto/LogVol04 /dev/vg51cto/lv_usr
Renamed "LogVol04" to "lv_usr" in volume group "vg51cto"
[root@hadoop01 ~] # vim /etc/fstab
#
# /etc/fstab
# Created by anaconda on Thu Nov 5 17:33:46 2015
#
# Accessible filesystems, by reference, aremaintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8)and/or blkid(8) for more info
#
/dev/mapper/vg51cto-lv_root / ext4 defaults 1 1
UUID=9c02e519-3b85-4918-b9fd-395535cab496 /boot ext4 defaults 1 2
/dev/mapper/vg51cto-lv_data /data ext4 defaults 1 2
/dev/mapper/vg51cto-lv_home /home ext4 defaults 1 2
/dev/mapper/vg51cto-lv_usr /usr/local ext4 defaults 1 2
/dev/mapper/vg51cto-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
[root@hadoop01 ~] # vim /etc/grub.conf
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub aftermaking changes to this file
# NOTICE: You have a /boot partition. Thismeans that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/mapper/vg51cto_lv-LogVol01
# initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0) /grub/splash .xpm.gz
hiddenmenu
title CentOS (2.6.32-431.el6.x86_64)
root(hd0,0)
kernel /vmlinuz-2 .6.32-431.el6.x86_64 ro root= /dev/mapper/vg51cto-lv_root rd_NO_LUKSrd_LVM_LV=vg51cto /lv_root rd_LVM_LV=vg51cto /lv_swap rd_NO_MD crashkernel=autoLANG=zh_CN.UTF-8 KEYBOARDTYPE=pc KEYTABLE=usrd_NO_DM rhgb quiet
initrd /initramfs-2 .6.32-431.el6.x86_64.img
[root@hadoop01 ~] # pvscan
PV /dev/sda2 VG vg51cto lvm2 [59.80 GiB / 0 free ]
Total: 1[59.80 GiB] / in use: 1 [59.80 GiB] / in no VG: 0 [0 ]
[root@hadoop01 ~] # pvdisplay
---Physical volume ---
PVName /dev/sda2
VGName vg51cto
PVSize 59.80 GiB / not usable 3.00 MiB
Allocatable yes (butfull)
PESize 4.00 MiB
TotalPE 15309
FreePE 0
AllocatedPE 15309
PVUUID pKC6SA-fkfe-OAl2-scVr-tq0h-EAXD-AWpwgX
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