The snapshot file system was mounted as a read-only snapshot.
快照文件系统挂载为只读快照。
Unlike external snapshots, I do not need to mount the snapshot file system to access the files in the image.
与外部快照不同，我不需要挂载快照文件系统来访问映像中的文件。
If the source is modified, the original contents of the blocks are copied to the disk space area of the snapshot file system.
如果修改了源文件系统，那么数据块的原始内容将复制到快照文件系统的磁盘空间区域。
Well, luckily you created an internal snapshot of the file system.
幸运的是，您创建了文件系统的一个内部快照。
What if you wanted to recover an entire file system from an internal snapshot?
如果我希望从内部快照恢复整个文件系统，我该怎么办？
If I remove the internal snapshot, there is now free space in the file system as expected.
如果我删除了内部快照，现在文件系统中应该有更多空闲空间。
Now, I'll create an internal snapshot of the file system.
现在，我将为文件系统创建一个内部快照。
If an internal snapshot runs out of space, or if a write to an internal snapshot fails, all internal snapshots for that source file system are marked invalid.
如果内部快照耗尽了空间，或者如果向内部快照写入失败，那么源文件系统的所有内部快照都将标记为无效。
The snapshot functionality was provided so that administrators could create consistent, integrated snapshots of an online (or offline) JFS2 file system.
快照功能能使管理员对在线(或离线)JFS2文件系统创建一致、集成的快照。
When a write or delete occurs in the original file system, the affected blocks are copied into the snapshot.
当原始文件系统中发生写入或删除事件时，受影响的块将复制到快照中。
SNAPSHOT_FILEW Procedure Writes system snapshot data to a file that can be subsequently queried.
SNAPSHOT _FILEW过程将系统快照数据编写到随后可以进行查询的文件中。
A read of the snapshot will require a lookup to determine whether the block needed should be read from the snapshot or from the original file system.
对快照的读取将需要执行查找，以确定是从快照还是从原始文件系统读取所需的数据块。
The second type allocates space out of the original file system, this is known as an internal snapshot.
第二种类型从原始文件系统分配出空间，这种快照称为内部快照。
This reverts a JFS2 file system to a point-in-time snapshot.
这会将 JFS2文件系统回滚到一个时间点快照。
To confirm that the snapshot image was intact and that it contained a copy of the entire file system, I mounted the external snapshot to verify the image.
为了确认快照映像是完整的，而且包含整个文件系统的副本，我挂载了外部快照来验证该映像。
You can perform the snapshot operation on a live file system, as it will automatically freeze I/O operations while the image is taken.
可以在活动的文件系统上执行快照操作，因为它在创建映像时将自动冻结I/O操作。
According to the IBM documentation, a snapshot typically needs 2-6% of file system space.
根据IBM文档，一个快照通常需要2- 6%的文件系统空间。
When the snapshot is modified, it either retrieves the data from the original file system (if it is not modified) or it retrieves it from its own disk storage (if the original was changed).
在修改快照时，它从原始文件系统获取数据（如果原始文件系统未修改），或者从它自己的磁盘存储获取数据（如果原始文件系统被更改）。
Restores an entire file system to a valid point-in-time snapshot (target snapshot).
将整个文件系统恢复到一个有效的指定时间点的快照(目标快照)。
The following example will give you an idea of how an internal snapshot can take up file system space.
下面的例子演示了内部快照如何消耗文件系统空间。
For the latest installable snapshot of the PEAK system in CVS, simply download the tar file.
有关CVS中PEAK系统的最新可安装快照，您可以下载tar文件。
Now that you have a snapshot, add a few more files to your current file system, again with the touch command (see Listing 4).
现在有了一个快照，接下来同样使用touch命令再将一些文件添加到当前文件系统中（如清单 4 所示）。
Of course, I would need to use an external snapshot, as I did not create this file system with the isnapshot=yes option.
当然，我需要使用外部快照，因为我没有使用 isnapshot=yes选项创建此文件系统。
For example, running a file system copy while the database is running won't give you a snapshot for your database for a particular point in time (PIT).
例如，如果数据库在运行，那么执行文件系统复制操作时将得不到即时点(pointintime,PIT)上数据库的快照。
I executed the snapshot command to create an external snapshot of the file system.
我执行snapshot命令来创建文件系统的外部快照。
Each snapshot is mountable as a read-only file system.
每个快照都能作为一个只读文件系统挂载。
Now, mount your snapshot as a read-only file system.
现在，挂载快照作为一个只读文件系统。
If the source is not modified, the snapshot does not store any of the files in its own physical disk space and has the same content as the original file system.
如果源文件系统没有修改，快照不会在其自己的物理磁盘空间中存储任何文件，并且具有的内容与原始文件系统相同。
A snapshot maps its contents to the contents of the source file system.
快照将其内容映射到源文件系统的内容。
This file is used most commonly to take a security snapshot for use as a documentation tool on one's own system or to take the configuration data and apply it on other systems.
这个文件常用于获取一个安全快照，以用作本身系统上的一个文档工具，或者用于获取配置数据，并将其应用到其他系统上。
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