VM虚拟机中Linux扩展根分区空间.docx
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VM虚拟机中Linux扩展根分区空间.docx
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VM虚拟机中Linux扩展根分区空间
VM虚拟机中Linux扩展根分区空
间
修改记录
编号
日期
描述
版本
作者
审核
发布日期
1
2016/7/18
初稿
1.0
夏裕太
1
1检查LVM1
2VMWare扩展设置1
3开启虚拟机2
4查看分区状况3
5查看lvm状态3
6生成分区/dev/sda34
7重读磁盘分区5
8格式化/dev/sda35
9lvm扩容5
Lroot@SQL2-J#Ivdlsplay
——Logicalvolume
lvPath
lvName
vgMarne
LVUUTD
lvwriteAccess
lv匚rearionhostrrimelvstatus护open
LV51ZQcurrentlesegments
Allocarion
Readaheadsectors
-currentlysetto
Blockdevice
1检查LVM
LVM的
看到文章说必须基于LVM,那是不是呢?
命令检验一下。
据说centos默认安装也是[root@SQL2~]#Ivdisplay
/dev/c€Hto5/sv^p
swapcentosFlpotQ-hifc-Qcpl-4bNO-cypw-FWim-yazx5mread,write
localhost,201^-07-0307:
44:
56+0800available
2
3-88GIB
992
1
inherit
auto
S192
253:
1
Lon1cq"IvolunftQlvpatn
lvMame
VGMame
LVUUID
lvwrireAccess
LVCreationhost,timelv呂匸arus
#open
LVSize
匚u「rentle
Segments
Allocation
Readaheadsectors
-匸urrentlysetto
Blockdevice
/dev/centos/rootroar
centos
m匚fg
read
HP-yPylL-tw2M-TnQd-4uW7-KT1G-bMiuOy/write
localhost,201€-67-0367:
44:
56+0800auanTable
1
45.59G-iE
11671
1
HnherHt
auto
SI92
253:
0
2VMWare扩展设置
关闭centos,打开VMWare软件,展开需要扩展的linux服务器
按如图所示步骤,点出扩展磁盘容量对话框
mEtfw.L韓
=artaH?
JiiQZwi£M_dk一uM«HiiP_dil
—cento&7_ll
*W心
口旦*出
I二豪■!
;匚;【1_―3:
:
HI
-片IO.Mfl.6^1u-
fli^WKIbRVniHI
料应哼亦
atfWM
vto%m
•fhismm
此处,改成80,启动虚拟机
■Mt
3开启虚拟机
#查看当前硬盘使用情况,如下所示,50G而已
[root@SQL2~]#df-h
FilesystemSizeUsedAvailUse%Mountedon
/dev/mapper/centos-root
46G
12G
35G25%/
devtmpfs
1.9G
0
1.9G
0%/dev
tmpfs
1.9G
84K
1.9G
1%/dev/shm
tmpfs
1.9G
8.9M
1.9G
1%/run
tmpfs
1.9G
0
1.9G
0%/sys/fs/cgroup
/dev/sda1
497M
159M
339M
32%/boot
tmpfs
379M
12K
379M
1%/run/user/42
tmpfs
379M
0
379M
0%/run/user/0
4查看分区状况
#sda已经扩展到80G了
[root@SQL2~]#fdisk/dev/sda
Welcometofdisk(util-linux2.23.2).
Changeswillremaininmemoryonly,untilyoudecidetowritethem.Becarefulbeforeusingthewritecommand.
Command(mforhelp):
p
Disk/dev/sda:
85.9GB,85899345920bytes,167772160sectorsUnits=sectorsof1*512=512bytes
Sectorsize(logical/physical):
512bytes/512bytes
I/Osize(minimum/optimal):
512bytes/512bytes
Disklabeltype:
dos
Diskidentifier:
0x0006069d
DeviceBoot
Start
End
Blocks
Id
System
/dev/sda1*
2048
1026047
512000
83
Linux
/dev/sda2
1026048
104857599
51915776
8e
LinuxLVM
Command(mforhelp):
5查看lvm状态
[root@SQL2~]#pvs
PVVGFmtAttrPSizePFree
/dev/sda2centoslvm2a--49.51g44.00m
[root@SQL2~]#vgs
VG#PV#LV#SNAttrVSizeVFree
centos120wz--n-49.51g44.00m
[root@SQL2~]#lvs
LVVGAttrLSizePoolOriginData%Meta%MoveLogCpy%Sync
Convert
rootcentos-wi-ao——45.59g
swapcentos-wi-ao——3.88g
6生成分区/dev/sda3
[root@SQL2~]#fdisk/dev/sda
Welcometofdisk(util-linux2.23.2).
Changeswillremaininmemoryonly,untilyoudecidetowritethem.Becarefulbeforeusingthewritecommand.
Command(mforhelp):
p
Disk/dev/sda:
85.9GB,85899345920bytes,167772160sectors
Units=sectorsof1*512=512bytes
Sectorsize(logical/physical):
512bytes/512bytes
I/Osize(minimum/optimal):
512bytes/512bytes
Disklabeltype:
dos
Diskidentifier:
0x0006069d
DeviceBoot
Start
End
Blocks
Id
System
/dev/sda1*
2048
1026047
512000
83
Linux
/dev/sda2
1026048
104857599
51915776
8e
LinuxLVM
Command(mforhelp):
n
Partitiontype:
pprimary(2primary,0extended,2free)
eextended
Select(defaultp):
p
Partitionnumber(3,4,default3):
3
Firstsector(104857600-167772159,default104857600):
#回车
Usingdefaultvalue104857600
#回车
Lastsector,+sectorsor+size{K,M,G}(104857600-167772159,default167772159):
Usingdefaultvalue167772159
Partition3oftypeLinuxandofsize30GiBisset
Command(mforhelp):
w
Thepartitiontablehasbeenaltered!
Callingioctl()tore-readpartitiontable.
WARNING:
Re-readingthepartitiontablefailedwitherror16:
Deviceorresourcebusy.
Thekernelstillusestheoldtable.Thenewtablewillbeusedat
thenextrebootorafteryourunpartprobe(8)orkpartx(8)
Syncingdisks.
7重读磁盘分区
[root@SQL2~]#partprobe
8格式化/dev/sda3
[root@SQL2~]#mkfs.ext4/dev/sda3
mke2fs1.42.9(28-Dec-2013)
Filesystemlabel=
OStype:
Linux
Blocksize=4096(log=2)
Fragmentsize=4096(log=2)
Stride=0blocks,Stripewidth=0blocks
1966080inodes,7864320blocks
393216blocks(5.00%)reservedforthesuperuser
Firstdatablock=0
Maximumfilesystemblocks=2155872256
240blockgroups
32768blockspergroup,32768fragmentspergroup
8192inodespergroup
Superblockbackupsstoredonblocks:
32768,98304,163840,229376,294912,819200,884736,1605632,2654208,4096000
Allocatinggrouptables:
done
Writinginodetables:
done
Creatingjournal(32768blocks):
done
Writingsuperblocksandfilesystemaccountinginformation:
done
[root@SQL2~]#pvcreate/dev/sda3
WARNING:
ext4signaturedetectedon/dev/sda3atoffset1080.Wipeit?
[y/n]:
yWipingext4signatureon/dev/sda3.
Physicalvolume"/dev/sda3"successfullycreated
[root@SQL2~]#pvs
PVVGFmtAttrPSizePFree
/dev/sda2centoslvm2a--49.51g44.00m#标红为组名,下步会用到
/dev/sda3lvm2---30.00g30.00g
[root@SQL2~]#vgextendcentos/dev/sda3#(注意组名)
Volumegroup"centos"successfullyextended
#此处+29.9表示大约扩展30G空间,若是此处设置为80G也是可行,表示扩展后总容量
[root@SQL2~]#lvextend-L+29.9G/dev/mapper/centos-root/dev/sda3
Roundingsizetoboundarybetweenphysicalextents:
29.90GiB
Sizeoflogicalvolumecentos/rootchangedfrom45.59GiB(11671extents)to75.49GiB(19326extents).
Logicalvolumerootsuccessfullyresized.
#若此处报错,可以不管,执行下个resize2fs命令,若正确,可忽略resize2fs命令
[root@SQL2~]#resize2fs/dev/mapper/centos-root
resize2fs1.42.9(28-Dec-2013)
resize2fs:
Badmagicnumberinsuper-blockwhiletryingtoopen/dev/mapper/centos-rootCouldn'tfindvalidfilesystemsuperblock.
[root@SQL2~]#resize2fs/dev/mapper/centos-root
resize2fs1.42.9(28-Dec-2013)
resize2fs:
Badmagicnumberinsuper-blockwhiletryingtoopen/dev/mapper/centos-rootCouldn'tfindvalidfilesystemsuperblock.
[root@SQL2~]#xfs_growfs/dev/mapper/centos-root
meta-data=/dev/mapper/centos-rootisize=256agcount=4,agsize=2987776blks
=
sectsz=512
attr=2,projid32bit=1
=
crc=0
finobt=0
data
=
bsize=4096
blocks=11951104,imaxpct=25
=
sunit=0
swidth=0blks
naming
=version2
bsize=4096
ascii-ci=0ftype=0
log
=internal
bsize=4096
blocks=5835,version=2
=
sectsz=512
sunit=0blks,lazy-count=1
realtime
=none
extsz=4096
blocks=0,rtextents=0
datablockschangedfrom11951104to19789824
[root@SQL2~]#df-h
Filesystem
Size
UsedAvailUse%Mountedon
/dev/mapper/centos-root
76G
12G
65G
15%/
devtmpfs
1.9G
0
1.9G
0%/dev
tmpfs
1.9G
84K
1.9G
1%/dev/shm
tmpfs
1.9G
9.0M
1.9G
1%/run
tmpfs
1.9G
0
1.9G
0%/sys/fs/cgroup
/dev/sdal
497M
159M
339M
32%/boot
tmpfs
379M
16K
379M
1%/run/user/42
tmpfs
379M
0
379M
0%/run/user/0
[root@SQL2~]#
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