如何获得关于某一物理卷的信息？
用来创建一个LVM物理卷；
主转储设备是整个iscsi物理卷。
The primary dump device is the entire iSCSI physical volume.
多个物理卷组成一个卷组。
这些管理数据存储在卷组的各个物理卷中。
This management data is stored on each physical volume of the volume group.
从odm中移除物理卷。
它把一个或多个物理卷(磁盘)组合成卷组。
It groups one or more physical volumes (disks) into a volume group.
它接受逻辑卷、物理卷或卷组名称作为参数。
It accepts names of logical volumes, physical volumes, or volume groups as parameters.
卷组是物理卷的集合。
ODM在操作系统层还保留物理卷的记录。
The ODM still keeps a record of the physical volumes at the operating system level.
当该过程完成时，分区将分类为未分配的物理卷。
When that process is completed, the partition will be classified as an unallocated physical volume.
AIX 将属于某个卷组的磁盘 看做是物理卷。
The disks that belong to a volume group are what AIX knows as physical volumes.
图14显示逻辑卷、它的物理卷、文件系统和卷组。
Figure 14 shows the logical volume, physical volume, file system, and volume group.
现在使用rmdev删除属于卷组的物理卷很安全。
It is now safe to delete the physical volumes belonging to the volume group using rmdev.
即使在卷组中有多个物理卷，您也要指定一个物理卷。
You only need to specify one physical volume, even if there are several physical volumes in the volume group.
让我们继续研究，并找出与一个物理卷相关联的逻辑卷。
Let's keep going and find out which logical volumes are associated with the one physical volume.
在操作系统级上，可以调优一个卷组、甚至单个物理卷的特征。
At the operating system level, you can tune the characteristics for a volume group or even for individual physical volumes.
通常应当将一个表空间的多个容器分开存放在单独的物理卷上。
Multiple containers for a table space should typically be placed on separate physical volumes.
在LVM运行时，我们可以向卷组添加物理卷，甚至从中除去它们。
While LVM is running, we can add physical volumes to the volume group or even remove them.
通常称为标准的或常规的VG类型，支持最多32个物理卷(PV)。
The VG type, commonly known as standard or normal, allows a maximum of 32 physical volumes (PVs).
当准备好要移动的数据之后，就从源lpar中移除卷组及其物理卷。
When you have your data ready to move, remove the volume group and its physical volumes from the source LPAR.
通过添加或者删除已经存在的物理卷在线重新设置卷组大小。
Resize volume groups online by absorbing new physical volumes (PV) or ejecting existing ones.
输入命令lspv列出一个计算机上所有可用的物理卷，如清单1所示。
Enter the LSPV command to list all physical volumes available on a computer, as shown in Listing 1.
添加了新磁盘后，可以将这些新的物理卷添加到卷组中来创建新的范围补给。
Once new disks have been added, you then can add these new physical volumes to your volume group(s) to create a fresh supply of extents.
为了帮助您做出决策，本文将介绍管理卷组和给逻辑环境分配物理卷涉及的步骤。
To assist with your decision, you'll see what's involved in managing volume groups and allocating physical volumes to your logical environments.
Kb_read：报告在测量时间间隔中从物理卷读取的总数据量(单位为千字节)。
Kb_read: Reports back the total data (kilobytes) from your measured interval that is read from the physical volumes.
可伸缩卷组的默认值为满足“每个物理卷最多容纳2040个物理分区”限制的最低值。
The default value for scalable volume groups is the lowest value to accommodate 2040 physical partitions per physical volume.
Kb _ wrtn：报告在测量时间间隔中向物理卷写入的数据量(单位为千字节)。
Kb_wrtn: Reports back the amount of data (kilobytes) from your measured interval that is written to the physical volumes.
例如，要想同步位于物理卷hdisk6和hdisk7上的物理分区，使用以下命令。
For example, to synchronize the physical partitions located on physical volumes hdisk6 and hdisk7, use.
在初始化LVM使用的一个或多个物理卷后，可以继续进行第二步 --创建卷组。
Once we have one or more physical volumes initialized for use by LVM, we can move on to step two -- creating a volume group.
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