[root@data4 ~]# df -hFilesystem Size Used Avail Use% Mounted on/dev/mapper/rootvg-lv01 99G 90G 3.4G 97% / <==给根目录扩容400G硬盘tmpfs 4.9G 0 4.9G 0% /dev/shm/dev/sda1 190M 39M 142M 22% /boot第一步、给VMware虚拟机增加一块400G磁盘

第二步、使用Linux下的fdisk工具进行分区
使用 fdisk 命令可以查看到刚刚新增的一块400G硬盘
[root@data4 ~]# fdisk -lDisk /dev/sda: 100 GB, 536870912000 bytes255 heads, 63 sectors/track, 65270 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x0003f73f Device Boot Start End Blocks Id System/dev/sda1 * 1 26 204800 83 LinuxPartition 1 does not end on cylinder boundary./dev/sda2 26 13055 104651776 8e Linux LVMDisk /dev/sdb: 400 GB, 429496729600 bytes255 heads, 63 sectors/track, 52216 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x46d25589Disk /dev/mapper/rootvg-lv01: 107.1 GB, 107139301376 bytes255 heads, 63 sectors/track, 13025 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x00000000使用 fdisk 命令进行磁盘分区
fdisk /dev/sdcn p1回车回车wpartprobe /dev/sdbmkfs -t ext4 /dev/sdb1查看分区情况
[root@data4 ~]# fdisk -lDisk /dev/sda: 100 GB, 536870912000 bytes255 heads, 63 sectors/track, 65270 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x0003f73f Device Boot Start End Blocks Id System/dev/sda1 * 1 26 204800 83 LinuxPartition 1 does not end on cylinder boundary./dev/sda2 26 13055 104651776 8e Linux LVMDisk /dev/sdb: 400 GB, 429496729600 bytes255 heads, 63 sectors/track, 52216 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x46d25589 Device Boot Start End Blocks Id System/dev/sdb1 1 52216 419424988+ 83 LinuxDisk /dev/mapper/rootvg-lv01: 107.1 GB, 107139301376 bytes255 heads, 63 sectors/track, 13025 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x00000000我们的新建分区/dev/sdb1,却不是LVM的。所以,接下来使用fdisk将其改成LVM的
fdisk /dev/sdbCommand (m for help): m Command (m for help): t //改变分区系统id Partition number (1-4): 3 //指定分区号Hex code (type L to list codes): 8e //指定要改成的id号,8e代表LVM。Command (m for help): wmkfs -t ext4 /dev/sdb1我们现在还不能用这个分区 , 因为我们没格式化。这时要重启系统就能够在 dev 下面看到 sdb1 ,如果不重启不能进行下面操作。
重启后,在此查看fdisk -l
重启后,在此查看fdisk -l
[root@data4 ~]# fdisk -lDisk /dev/sda: 100 GB, 536870912000 bytes255 heads, 63 sectors/track, 65270 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x0003f73f Device Boot Start End Blocks Id System/dev/sda1 * 1 26 204800 83 LinuxPartition 1 does not end on cylinder boundary./dev/sda2 26 13055 104651776 8e Linux LVMDisk /dev/sdb: 400 GB, 429496729600 bytes255 heads, 63 sectors/track, 52216 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x46d25589 Device Boot Start End Blocks Id System/dev/sdb1 1 52216 419424988+ 8e Linux LVMDisk /dev/mapper/rootvg-lv01: 535.6 GB, 535562289152 bytes255 heads, 63 sectors/track, 65111 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x00000000第三步、扩充根分区
接着,使用vgextend 命令加到lvm组里面去,做如下操作:
[root@data4 ~]# lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert lv01 rootvg -wi-ao---- 99.78g[root@data4 ~]# pvcreate /dev/sdb1 Physical volume "/dev/sdb1" successfully created[root@data4 ~]# vgextend rootvg /dev/sdb1 Volume group "rootvg" successfully extended[root@data4 ~]# vgdisplay --- Volume group --- VG Name rootvg System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 2 Act PV 2 VG Size 499.75 GiB PE Size 32.00 MiB Total PE 15992 Alloc PE / Size 3193 / 99.78 GiB Free PE / Size 12799 / 399.97 GiB VG UUID b6ceOL-4U9q-3DyS-p8VV-WKvC-dAEp-nuFws7最后,给根分区增加空间
[root@data4 ~]# lvextend -L +399G /dev/rootvg/lv01 /dev/sdb1 Size of logical volume rootvg/lv01 changed from 99.78 GiB (3193 extents) to 498.78 GiB (15961 extents). Logical volume lv01 successfully resized.使用e2fsck指令检查文件系统错误
[root@data4 ~]# e2fsck -f /dev/mapper/rootvg-lv01resize2fs指令被用来增大或者收缩未加载的“ext2/ext3”文件系统的大小
[root@data4 ~]# resize2fs /dev/mapper/rootvg-lv01resize2fs 1.41.12 (17-May-2010)Filesystem at /dev/mapper/rootvg-lv01 is mounted on /; on-line resizing requiredold desc_blocks = 7, new_desc_blocks = 32Performing an on-line resize of /dev/mapper/rootvg-lv01 to 130752512 (4k) blocks. <==需要耐心等待一段时间The filesystem on /dev/mapper/rootvg-lv01 is now 130752512 blocks long.再次使用df -f命令查看/根目录以及成功扩展了400G容量
[root@data4 ~]# df -hFilesystem Size Used Avail Use% Mounted on/dev/mapper/rootvg-lv01 491G 90G 377G 20% /tmpfs 4.9G 0 4.9G 0% /dev/shm/dev/sda1 190M 39M 142M 22% /boot参考文献:
实战Linux下VMware虚拟机根目录空间扩充 http://blog.csdn.net/snlying/article/details/6184428
VMware 虚拟机(linux)增加根目录磁盘空间 http://zhongxw.blog.51cto.com/3429597/787219/