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首先登录宿主机，查看 # df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 442G 155G 265G 37% / /dev/sda1 99M 15M 80M 15% /boot tmpfs 3.7G 0 3.7G 0% /dev/shm none 3.7G 112K 3.7G 1% /var/lib/xenstored 生成一块100G硬盘(过程比较慢 可以再开一个宿主机终端 去指定目录下 ll查看进度) #dd if=/dev/mapper/VolGroup00-LogVol00 of=/extenda/backup/backup/14_server_ext.img bs=1M count=102400 修改配置文件，添加新生厂的磁盘给14_server虚拟机 # vim /etc/xen/14_server disk = [ "tap:aio:/extenda/backup/backup/14_server.img,xvda,w","tap:aio:/extenda/backup/backup/14_server_ext.img,xvdb,w"] 重启14_server虚拟机 # xm list Name ID Mem(MiB) VCPUs State Time(s) 13_server 1 1024 1 -b---- 6390.2 14_server 10 4000 3 -b---- 1413.1 15_server 6 256 1 -b---- 8191.4 16_server 7 256 1 -b---- 227598.7 Domain-0 0 2389 8 r----- 24219.3 # xm destroy 14_server # xm create 14_server 进入14_server虚拟机进行下一步的操作 # xm console 14_server 查看是否添加磁盘给14_server # ll /dev/xvdb brw-r----- 1 root disk 202, 16 May 11 11:46 /dev/xvdb 查看扩容前磁盘情况 # df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 29G 19G 9.1G 67% / /dev/xvda1 99M 22M 72M 24% /boot tmpfs 2.0G 0 2.0G 0% /dev/shm 192.168.1.15:/home/www/dms/test/resources/upload 6.7G 3.4G 2.9G 54% /home/www/dms/resources/upload 192.168.1.15:/home/www/dms/test/resources/download 6.7G 3.4G 2.9G 54% /home/www/dms/resources/download # fdisk -l Disk /dev/xvda: 22.2 GB, 22221422592 bytes 255 heads, 63 sectors/track, 2701 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/xvda1 * 1 13 104391 83 Linux /dev/xvda2 14 2701 21591360 8e Linux LVM Disk /dev/xvdb: 107.3 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/xvdb doesn't contain a valid partition table 创建物理卷 #pvcreate /dev/xvdb 查看物理卷 # pvdisplay --- Physical volume --- PV Name /dev/xvda2 VG Name VolGroup00 PV Size 20.59 GB / not usable 29.12 MB Allocatable yes (but full) PE Size (KByte) 32768 Total PE 658 Free PE 0 Allocated PE 658 PV UUID DOzt7l-flYL-vpo2-25eh-xooh-5wgS-BFAi38 --- Physical volume --- PV Name /dev/xvdb VG Name VolGroup00 PV Size 100.00 GB / not usable 32.00 MB Allocatable yes PE Size (KByte) 32768 Total PE 3199 Free PE 2879 Allocated PE 320 PV UUID IP8Vcl-DEG0-mGyn-UGiv-J1gH-B1EG-aJrPrN 查看原vg的情况 # vgdisplay --- Volume group --- VG Name VolGroup00 //注意这个名字 这是我们要给新pv添加的vg名 System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 9 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 2 Act PV 2 VG Size 120.53 GB PE Size 32.00 MB Total PE 3857 Alloc PE / Size 978 / 30.56 GB Free PE / Size 2879 / 89.97 GB VG UUID zhDUVP-A8hK-hIXH-moR3-qqNC-2HS4-NGFK4m 扩展卷组 将/dev/xvdb物理卷添加到VolGroup00 卷组中 # vgextend VolGroup00 /dev/xvdb 添加磁盘空间 # lvextend -L +10G /dev/mapper/VolGroup00-LogVol00 也可以使用命令 # lvextend -l +10%FREE /dev/mapper/VolGroup00-LogVol00 此时,如果有df命令查看的话,会发现root空间并没有增加的.还需要执行以下两步操作才可以. 检查逻辑卷 #e2fsck -f /dev/mapper/VolGroup00-LogVol00 重新定义分区大小 #resize2fs /dev/mapper/VolGroup00-LogVol00 大功告成 快用df -h命令看看吧，希望您也能成功哟！ |
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