Specifying all causes the statement to fail if one or more indexes are in an offline or read - only filegroup or the specified operation is not allowed on one or more index types 如果有一个或多个索引脱机或不允许对一个或多个索引类型执行只读文件组操作或指定操作，则指定all将导致语句失败。
This is because the data file cannot be updated to track which data extents were changed by a bulk - logged operation . all later log backups contain the same information 执行日志备份之前，如果将包含大容量日志更改的文件组更改为只读，则只读文件组的所有后续日志备份将包含由大容量日志操作所更改的区数。
However , he found it a little difficult to install nvidia drivers because they had conflicts with other drivers , so he used a little trick to add them using symbolic links and the capability to mount a directory on another read - only filesystem 然而，他发现在安装nvidia驱动程序时有一点困难，因为它们会与其他驱动程序产生冲突，因此他使用了一点技巧来添加这些驱动程序：使用符号链接并将一个目录挂载到另外一个只读文件系统上（
At this point , we have a wireless access point using wep and a read - only filesystem , so you can unplug it , plug it back in , and it will come up - not as quickly as some commercial ones , maybe , but it will come back up , with no damage and no lost files 现在，我们有了一个使用wep和只读文件系统的无线接入点，因此您可以把它拆下来，再插回去，它将会启动可能没有某些商业性接入点那么快，但它会再次启动，没有任何损失也不会丢失任何文件。
Discusses issues such as changing a roll forward set , skipping roll forward of data in read - only files , using multiple full backups , executing backup and restore at the same time in a database , controlling creation of added files during roll forward , restoring renamed files and filegroups , and using the replace option 讨论了更改前滚集，跳过只读文件中数据的前滚，使用多个数据备份，在数据库中同时执行备份和还原，控制前滚过程中已添加文件的创建，还原重命名的文件和文件组，以及使用replace选项等问题。
