UnionFS Corruption and Data Loss in Linux

In Linux operating system has a unique filesystem service called UnionFS which allows you to have union mount for other file systems. Union mount is a process through which you can have several file systems getting mounted at one time. These file systems will then appear as a single file system. The work of the UnionFs is to allow the directories and files of different file systems to form a single file system. These files and directories are known as branches.

When the branches are merged there occurs a virtual filesystem. In this way the directories which have same path within the branches will be seen together. A priority level is set among the branches while mounting them. These branches can be read only or read-write file systems. This allows the file system to appear like the writeable file system. But the weird situation step in if you modify the UnionFS branch directly. This can even lead you to the data loss condition which requires Linux recovery.

When the merging of the branches is done using UnionDS, after that pivot-root or switch-root is done, setting “/” to a new point in the current file system hierarchy. This does not allow to properly removing the UnionFS-layers at the time of shut down. At this time the mounted file systems can’t be unmounted properly and thus this becomes the reason of data loss in Linux.

For this reason the deleted or invalid inodes are added to the file system at each shut down. Data lost from Linux system is present on the hard drive in any case until it is overwritten. So based on this fact Linux recovery is possible through a software help. Data recovery Linux can be done by scanning the hard drive by the use of few algorithms. The data recovery software meant particularly for this are known as Linux data recovery software.

These software fulfill all the needs of the users to have data recovery Linux in any of the case. Usually these software come with a user interface which is quite easy to deal and any of the less technically skilled user can use it. the thing that you need to check is that the file systems you are using in this case are supported for Linux data recovery for the chosen one software or not.

This Linux recovery software is compatible with the file systems like Ext2, Ext3 and Reiser FS file system and for all the flavors of Linux like Red Hat, Suse, Caldera and many more. This Linux data recovery software is the complete solution for the data loss problems from Linux based systems.