Method for backing up isomorphic/isomerous UNIX/Linux host on line

Abstract

The invention provides a method for backing up an isomorphic / isomerous UNIX / Linux host on line. According to the method, a network file system (NFS) and the file system snapshot function of a UNIX / Linux host are used together, a network sharing space is mounted on the backed-up UNIX / Linux host, a file system snapshot is created on the sharing space, and the file system is backed up onto the memory space of network sharing. By adopting the method, the aim of backing up file systems and operating systems is fulfilled.

Description

technical field [0001] The present invention relates to the file system snapshot function of the combined use of network sharing (NFS) and UNIX / Linux host, specifically a method for online backup of the same / heterogeneous UNIX / Linux host; to realize the normal operation of the UNIX / Linux system The online backup file system in the case, including the root file system, and realizes the non-local storage of the backup, which is universal for UNIX systems and Linux systems. Background technique [0002] Traditional UNIX / Linux servers have high availability, especially minicomputers running Unix operating systems, whose availability can reach 99.9999%. Combined with powerful processing capabilities, UNIX / Linux hosts have become a good choice for core applications such as real-time transactions, camp accounts, and large databases in industries such as enterprises, telecommunications, and finance. [0003] For these hosts running core applications, the maintainability generally h...

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Problems solved by technology

[0005] 2. The high availability of application services requires that the host should not stop as much as possible to ensure the availability time, and the continuous reading and writing of the operating system during the running process will cause the backup file system to be inconsistent and cause the backup to fail

[0007] 1. For the case where there is only one partition / file system on the system disk, because there is no other partition / file system, the snapshot cannot be stored, resulting in the failure of the system to back up

Introducing external storage can solve this problem, but increases the complexity of backup operations

[0008] 2. The traditional UNIX system backup is backed up to the tape drive, and the tape drive is used for backup. The read and write speed of the tape drive itself is the bottleneck, which prolongs the backup time, and the longer the backup time, the larger the temporary file generated by the snapshot will be. , once the snapshot temporary file exceeds the maximum space that the file system can provide, the backup will fail

[0009] 3. In the files backed up by means of snapshots, the storage of system backup copies may be fragmented, which increases the difficulty of management, and if the backup is completed and then centralized, the complexity of backup and restore operations will be increased

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