那么，XFS到底为什么要有分配组呢？
调查者没有盲目的按照分配组评估阴性结果。
Investigators assessing the negative outcomes were not blinded to group assignment.
每个分配组在需要时以64个索引节点为一组来分配它们。
Each allocation group allocates inodes as needed, in groups of 64.
主要原因是，XFS使用分配组，以便能有效地处理并行io。
Primarily, XFS USES allocation groups so that it can efficiently handle parallel IO.
正如您将从我前一篇文章所回忆的一样，分配组让XFS并行执行多个元数据操作。
As you'll recall from my previous article, allocation groups let XFS perform multiple metadata operations in parallel.
分配组还有助于在多处理器系统上优化并行io性能，因为可以同时有多个元数据更新处于“在传输中”。
Allocation groups also help to optimize parallel IO performance on multiprocessor systems, because more than one metadata update can be "in transit" at the same time.
第二个选项通过告诉mkfs.xfs 将创建的分配组的数目最小化，让您增强新文件系统的性能。
The second option lets you enhance the performance of your new filesystem by telling mkfs.xfs to minimize the number of allocation groups that are created.
因此，不要让mkfs.xfs为您的文件系统选择分配组的数目，而是通过使用 -d agcount=x选项指定一个数目。
So rather than let mkfs.xfs choose the number of allocation groups for your filesystem, specify a number by using the -d agcount=x option.
多亏了分配组，XFS代码将允许多个线程和进程持续以并行方式运行，即使它们中的许多线程和进程正在同一文件系统上执行大规模IO 操作。
Thanks to allocation groups, the XFS code will allow multiple threads and processes to continue to run in parallel, even if many of them are performing non-trivial IO on the same filesystem.
一组士兵中分配一两个。
在第一对任务完成后，一组参与者被分配了一个要求不高的活动，目的是让他们走神。
After the first pair of tasks was completed, one group of participants was assigned an undemanding activity intended to cause their minds to wander.
在将PV分配给卷组之后，就可以创建任意大小的逻辑卷(只要不超过VG的大小)。
So after the assignment of PVs to the volume group, you can create a logical volume of any size (to the maximum of the VG size).
如下的示例描述了如何将域分配到卷组。
The following example describes how domains can be assigned to volume groups.
首先装载用户，然后是角色并分配用户角色，然后装载组并分配成员。
Users are loaded first, roles second and then the user role assignments made, then groups are loaded and membership assigned.
这些功能包括批量分配一组号码，可以把这些号码交给第三方标签制作商或合同生产商去制作标签。
These capabilities include batch level allocation to get a set of Numbers that can be handed over to a third party label producer or contract manufacturer.
图1：每个用例都有一组分配的情境。
但是，在导出之后，必须手工地把用户分配给组。
The assignment of users to groups will have to be done manually after the export though.
确认这个磁盘目前没有分配给任何卷组。
Confirm that the disk is now not assigned to any volume groups.
正如上面提到的，put消息选项MQPMO_LOGICAL_ORDER仅是一个队列管理器指令，用于自动分配消息组标识符和序列号。
As mentioned above, the put message option MQPMO_LOGICAL_ORDER was simply an instruction to the queue manager to automatically allocate message group identifiers and sequence Numbers.
应该注意的是，jvm堆大小是从DataFlowEngine(执行组)进程分配的。
It should be noted that the JVM heap size is allocated from the DataFlowEngine (Execution Group) process.
参考MulticastAddresses获取多播组地址分配。
Refer to multicast Addresses for multicast group address assignment.
利用 removeGbaseAttribute()方法删除现有属性，并分配一组新的属性。
The existing attributes are removed with the removeGbaseAttribute() method, and a new set of attributes are assigned.
它还可以帮助您将连接分配到连接组。
It also helps you to assign connections to connection groups.
此外，管理员(或应用程序部署人员)在部署时必须向适当的组和用户分配每个角色，并且在组和用户随着时间的推移而更改时维护映射。
In addition, an administrator (or application deployer) must assign each role to the appropriate groups and users at deployment time, and maintain the mapping as groups and user change over time.
通过将域分配给这些卷组，就可以限制用户对这些资源的访问。
By assigning domains to these volume groups, users can be restricted accessing these resources.
到目前为止，可以将这个软件包分配给所有用户组或将其分配给特定用户组。
At this point, you can assign this software package to all user groups or assign it to specific user groups.
双击文档被分配到的那个内容组的灰色条形图标。
Double-click the gray bar for the group to which you assigned the documents.
针对组的增强支持，允许将工作分配给特定的组，该组中的任何成员都可以要求从事这项工作。
Enhanced support for groups allows for work to now be assigned to a specific group where any member of that group can claim it.
通过将域分配给卷组和管理员，就可以限制常规用户管理卷组。
By assigning domains to volume groups and administrators, a normal user can be restricted in managing volume groups.
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