1、虚拟化平台虚拟机添加硬盘
系统查看添加的硬盘
[root@yumserver ~] # lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 50G 0 disk ├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 49G 0 part ├─centos-root 253:0 0 44G 0 lvm /
└─centos-swap 253:1 0 5G 0 lvm [SWAP]
sr0 11:0 1 4.4G 0 rom |
如果没有显示出来新加的硬盘,则执行下面命令
echo "- - -" > /sys/class/scsi_host/host0/scan
echo "- - -" > /sys/class/scsi_host/host1/scan
echo "- - -" > /sys/class/scsi_host/host2/scan
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再次查询,发现新添加的sdb已经可以看到了。
[root@yumserver ~] # lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 50G 0 disk ├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 49G 0 part ├─centos-root 253:0 0 44G 0 lvm /
└─centos-swap 253:1 0 5G 0 lvm [SWAP]
sdb 8:16 0 50G 0 disk sr0 11:0 1 4.4G 0 rom |
2、parted将sdb分区
[root@yumserver ~] # parted /dev/sdb
GNU Parted 3.1 使用 /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mklabel gpt (parted) mkpart primary 0% 100% (parted) p Model: VMware Virtual disk (scsi) Disk /dev/sdb : 53.7GB
Sector size (logical /physical ): 512B /512B
Partition Table: gpt Disk Flags: Number Start End Size File system Name 标志 1 1049kB 53.7GB 53.7GB primary
(parted) q 信息: You may need to update /etc/fstab .
[root@yumserver ~] #
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再次查看,发现主分区sdb1出现了
[root@yumserver ~] # lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 50G 0 disk ├─sda1 8:1 0 500M 0 part /boot
└─sda2 8:2 0 49.5G 0 part ├─centos-root 253:0 0 47.5G 0 lvm /
└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 50G 0 disk └─sdb1 8:17 0 50G 0 part sr0 11:0 1 1024M 0 rom [root@yumserver ~] #
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3 、查看现有vg,lv,确定扩容
[root@yumserver ~] # pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 centos lvm2 a--
[root@yumserver ~] # vgs
VG #PV #LV #SN Attr VSize VFree
centos 1 2 0 wz--n-
[root@yumserver ~] # lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
root centos -wi-ao----
swap centos -wi-ao---- 2.00g
[root@yumserver ~] #
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4、分别创建pv,扩容vg,扩容lv,扩容文件系统
##此处发现不能tab补全命令, yum install -y bash-completion
[root@yumserver ~] # pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created.
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[root@yumserver ~] # vgextend centos /dev/sdb1
Volume group "centos" successfully extended
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[root@yumserver ~] # lvextend /dev/centos/root -l +100%FREE
Size of logical volume centos /root changed from
Logical volume centos /root successfully resized.
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查看文件系统
[root@yumserver ~] # df -Th
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xfs 类型,使用 xfs_growfs,此处为xfs
[root@yumserver ~] # xfs_growfs /dev/centos/root
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ext 类型,使用 resize2fs
[root@yumserver ~] # resize2fs /dev/centos/root
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再次查看,/目录扩容成功
[root@yumserver ~] # df -h
文件系统 容量 已用 可用 已用% 挂载点 devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs 3.9G 8.9M 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/mapper/centos-root 98G 1.4G 97G 2% /
/dev/sda1 497M 143M 354M 29% /boot
tmpfs 783M 0 783M 0% /run/user/0
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转载:http://blog.itpub.net/70004783/viewspace-2790155/