Netbackup 添加策略_报NFS.Skipping

 接到中心电邮，去西红门营业厅配合操作Oracle备份与netbackup策略设定（将Oracle导出数据用nbu进行备份到磁带中）期间有一个小的注意点需要指出，防止大家跟我一样忽略平时不经常用的一些参数。

下面是在oracle 10g下使用exp导出用户下面所有对象跟表

exp user/pwd file=/dir/xxx.dmp log=xxx.log owner=zh

...................................................

然后我是将放到了存储上，然后我通过nfs mount的形式，找到了nbu的client端，进行mount，让操作系统可以识别到我们存放exp导出的dmp文件与日志，如我们事例中所示/ssbak目录。

下面我们可以在Nbu图形管理界面进行新建策略，把这个目录备份一下即可。

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注意红色标注处，原先我并没有勾选此选项，看下一个图

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设定了一个全备策略，并且制定失效时间两年

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客户端的选择与要备份的目录

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我在监视器中查看当前备份的任务计划，发现

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发现有报错信息：/ssbak is on file system type NFS.Skipping

这时候查看关于NFS在nbu中的设定，我发现有一个参数follow nfs。而且在赛门铁克官网有一个这样的说明：

By default, NetBackup does not back up the following file or file types:

NFS files or directories, unless you set Follow NFS. These files are likely backed up by the home host.

Files or directories in a different file system if you do not set Cross Mount Points or include those mount points in

Files or directories with path lengths longer than 1023 characters.

Files or directories where the operating system does not return inode information (the lstat system call failed).

Directories that NetBackup cannot access (cannot use the cd command to access).

On a disk managed by Storage Migrator, migrated files or directories where Storage Migrator does not return inode information (mig_stat fails). Note that NetBackup Server does not support Storage Migrator.

Socket special files (named pipes are backed up).

Door files

Locked files when mandatory locking is enabled by an application that currently has the file open.

Busy files. If a file is open, NetBackup backs up the last saved version of the file.

 NetBackup automatically excludes the following file system types on most platforms:

cdrom (all UNIX/Linux platforms)

cachefs (AIX, Solaris, SGI, UnixWare)

devpts (Linux)

mntfs (Solaris)

proc (UNIX/Linux platforms; does not exclude automatically for AIX, so /proc must be added manually to exclude list. If not added manually, partially successful backups may result when using the ALL_LOCAL_DRIVES directive on AIX)

tmpfs (Linux)

usbdevfs          

然而选项follow NFS与Cross mount point参数定义

Follow NFS

指定是否备份NFS的文件系统（远程在本地安装的文件系统）

Cross Mount Point（交叉文件系统）

在UNIX系统中，每一个文件系统都有一个Mount点，这个Mount点可能位于整个系统的任意位置。当一个文件系统的Mount点位于另一个文件系统之下时，我们称之为交叉文件系统。如：/文件系统包括/usr和/tmp的子文件系统。

所以将此两个选项勾选，备份成功！

本文转自yangjunfeng 51CTO博客，原文链接:http://blog.51cto.com/yangjunfeng/998276