Vmware添加磁盤的方法:擴(kuò)展磁盤

更新時(shí)間：2019年01月02日 11:03:25 作者：liumiaocn

今天小編就為大家分享一篇關(guān)于Vmware添加磁盤的方法:擴(kuò)展磁盤，小編覺得內(nèi)容挺不錯(cuò)的，現(xiàn)在分享給大家，具有很好的參考價(jià)值，需要的朋友一起跟隨小編來看看吧

這篇文章介紹了一下如何在Vmare下添加或擴(kuò)展磁盤并使之有效。

場(chǎng)景

創(chuàng)建Linux時(shí)分配磁盤空間隨著使用的增加，使用率逐漸升高，此時(shí)需要在添加或者擴(kuò)展一下磁盤。
比如：此Linux(CentOS 7.3)的磁盤為20G，目前已經(jīng)使用到接近80%

[root@mail ~]# cat /etc/redhat-release 
CentOS Linux release 7.3.1611 (Core) 
[root@mail ~]# df
Filesystem         1K-blocks   Used Available Use% Mounted on
/dev/mapper/cl_angular-root 17811456 13985948  3825508 79% /
devtmpfs           1521180    0  1521180  0% /dev
tmpfs             1532160    0  1532160  0% /dev/shm
tmpfs             1532160   8776  1523384  1% /run
tmpfs             1532160    0  1532160  0% /sys/fs/cgroup
/dev/sda1           1038336  123500  914836 12% /boot
tmpfs             306432    0  306432  0% /run/user/0
[root@mail ~]#

擴(kuò)展磁盤或者添加磁盤

Vmware下有兩種方式：

添加磁盤
擴(kuò)展磁盤

注意：擴(kuò)展磁盤需要在此虛擬機(jī)停止的狀態(tài)下進(jìn)行，同時(shí)擴(kuò)展的數(shù)字是擴(kuò)展后的預(yù)期大小，比如事前為20G，希望擴(kuò)展10G，應(yīng)該輸入30。這篇文章使用擴(kuò)展磁盤的方式。

確認(rèn)狀態(tài)

擴(kuò)展后，重新啟動(dòng)linux，發(fā)現(xiàn)df狀態(tài)沒有變化

[root@mail ~]# df
Filesystem         1K-blocks   Used Available Use% Mounted on
/dev/mapper/cl_angular-root 17811456 13985948  3825508 79% /
devtmpfs           1521180    0  1521180  0% /dev
tmpfs             1532160    0  1532160  0% /dev/shm
tmpfs             1532160   8776  1523384  1% /run
tmpfs             1532160    0  1532160  0% /sys/fs/cgroup
/dev/sda1           1038336  123500  914836 12% /boot
tmpfs             306432    0  306432  0% /run/user/0
[root@mail ~]#

使用fdisk確認(rèn)磁盤空間是否已經(jīng)擴(kuò)展

[root@mail ~]# fdisk -l
Disk /dev/sda: 32.2 GB, 32212254720 bytes, 62914560 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: 0x0005ba89
  Device Boot   Start     End   Blocks  Id System
/dev/sda1  *    2048   2099199   1048576  83 Linux
/dev/sda2     2099200  41943039  19921920  8e Linux LVM
Disk /dev/mapper/cl_angular-root: 18.2 GB, 18249416704 bytes, 35643392 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 /dev/mapper/cl_angular-swap: 2147 MB, 2147483648 bytes, 4194304 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
[root@mail ~]#

可以看到“Disk /dev/sda: 32.2 GB”，已經(jīng)擴(kuò)展了10G空間。

擴(kuò)展分區(qū)

[root@mail ~]# fdisk /dev/sda
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): n
Partition type:
  p  primary (2 primary, 0 extended, 2 free)
  e  extended
Select (default p): p
Partition number (3,4, default 3): 
First sector (41943040-62914559, default 41943040): 
Using default value 41943040
Last sector, +sectors or +size{K,M,G} (41943040-62914559, default 62914559): 
Using default value 62914559
Partition 3 of type Linux and of size 10 GiB is set
Command (m for help): t
Partition number (1-3, default 3): 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): 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.
[root@mail ~]#

執(zhí)行 partprobe或者重啟

執(zhí)行 partprobe命令用于將磁盤分區(qū)表變化信息通知內(nèi)核，并請(qǐng)求操作系統(tǒng)重新加載分區(qū)表，可以避免必須重新啟動(dòng)的問題，這里我們r(jià)eboot一下。

分區(qū)確認(rèn)

通過fdisk可以確認(rèn)到已經(jīng)添加了sda3

[root@mail ~]# fdisk -l
Disk /dev/sda: 32.2 GB, 32212254720 bytes, 62914560 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: 0x0005ba89
  Device Boot   Start     End   Blocks  Id System
/dev/sda1  *    2048   2099199   1048576  83 Linux
/dev/sda2     2099200  41943039  19921920  8e Linux LVM
/dev/sda3    41943040  62914559  10485760  8e Linux LVM
Disk /dev/mapper/cl_angular-root: 18.2 GB, 18249416704 bytes, 35643392 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 /dev/mapper/cl_angular-swap: 2147 MB, 2147483648 bytes, 4194304 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
[root@mail ~]#

擴(kuò)展vg

基本LVM知識(shí)，進(jìn)行vg擴(kuò)展，不再贅述。

[root@mail ~]# pvcreate /dev/sda3
 Physical volume "/dev/sda3" successfully created.
[root@mail ~]# vgs
 VG     #PV #LV #SN Attr  VSize VFree
 cl_angular  1  2  0 wz--n- 19.00g  0 
[root@mail ~]# vgextend cl_angular /dev/sda3
 Volume group "cl_angular" successfully extended
[root@mail ~]# vgs
 VG     #PV #LV #SN Attr  VSize VFree 
 cl_angular  2  2  0 wz--n- 28.99g 10.00g
[root@mail ~]#

擴(kuò)展lv

可以將此lv全部添加或者部分添加，我們這里全部添加。

[root@mail ~]# lvs
 LV  VG     Attr    LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
 root cl_angular -wi-ao---- 17.00g                          
 swap cl_angular -wi-ao---- 2.00g                          
[root@mail ~]# lvextend /dev/cl_angular/root /dev/sda3
 Size of logical volume cl_angular/root changed from 17.00 GiB (4351 extents) to 26.99 GiB (6910 extents).
 Logical volume cl_angular/root successfully resized.
[root@mail ~]# lvs
 LV  VG     Attr    LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
 root cl_angular -wi-ao---- 26.99g                          
 swap cl_angular -wi-ao---- 2.00g                          
[root@mail ~]#

df狀態(tài)確認(rèn)

此時(shí)df狀態(tài)還沒有變化

[root@mail ~]# df
Filesystem         1K-blocks   Used Available Use% Mounted on
/dev/mapper/cl_angular-root 17811456 13986168  3825288 79% /
devtmpfs           1521180    0  1521180  0% /dev
tmpfs             1532160    0  1532160  0% /dev/shm
tmpfs             1532160   8808  1523352  1% /run
tmpfs             1532160    0  1532160  0% /sys/fs/cgroup
/dev/sda1           1038336  123500  914836 12% /boot
tmpfs             306432    0  306432  0% /run/user/0
[root@mail ~]#

xfs_growfs

使用xfs_growfs可以將xfs文件系統(tǒng)進(jìn)行online方式的擴(kuò)展，它會(huì)將data block進(jìn)行調(diào)整。

[root@mail ~]# xfs_growfs /dev/mapper/cl_angular-root
meta-data=/dev/mapper/cl_angular-root isize=512  agcount=4, agsize=1113856 blks
     =            sectsz=512  attr=2, projid32bit=1
     =            crc=1    finobt=0 spinodes=0
data   =            bsize=4096  blocks=4455424, imaxpct=25
     =            sunit=0   swidth=0 blks
naming  =version 2       bsize=4096  ascii-ci=0 ftype=1
log   =internal        bsize=4096  blocks=2560, version=2
     =            sectsz=512  sunit=0 blks, lazy-count=1
realtime =none          extsz=4096  blocks=0, rtextents=0
data blocks changed from 4455424 to 7075840
[root@mail ~]#

再次確認(rèn)df狀態(tài), 添加的10G空間已經(jīng)有效，使用率也降到了50%。

[root@mail ~]# df
Filesystem         1K-blocks   Used Available Use% Mounted on
/dev/mapper/cl_angular-root 28293120 13986252 14306868 50% /
devtmpfs           1521180    0  1521180  0% /dev
tmpfs             1532160    0  1532160  0% /dev/shm
tmpfs             1532160   8808  1523352  1% /run
tmpfs             1532160    0  1532160  0% /sys/fs/cgroup
/dev/sda1           1038336  123500  914836 12% /boot
tmpfs             306432    0  306432  0% /run/user/0
[root@mail ~]#

小結(jié)

這篇文章介紹了如何vmware下如何擴(kuò)展磁盤，其實(shí)后面的命令均為lvm操作，基本上在linux或者unix的卷操作上大體類似。

總結(jié)

以上就是這篇文章的全部?jī)?nèi)容了，希望本文的內(nèi)容對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值，謝謝大家對(duì)腳本之家的支持。如果你想了解更多相關(guān)內(nèi)容請(qǐng)查看下面相關(guān)鏈接

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