Error Message

Error : UX:vxfs mount: ERROR: V-3-21268: /dev/vx/dsk/disk group/volume is corrupted. needs checking

Table of Contents

1. Introduction
2. Gathering information about the file system, including a metasave
3. Replaying a metasave

1. Introduction

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When VxFS file system corruption is suspected, the degree of corruption can be often assessed *before* attempting to run “fsck –y."

Note: Once "fsck -y" has been performed, permanent changes to the metadata have already occurred.  As a result, further analysis of the file system is unlikely to be productive.

2. Gathering a metasave, and other information about the file system

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Gathering a "metasave" of the filesystem, along with other information, makes it possible to safely run fsck against a "replay" of the filesystem metadata instead of running it against actual production data. This can be used to "predict" the effect that running fsck -y will have on a file system without actually running it on production data.
 

3. Replaying a Metasave

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The benefit of replaying a metasave on a temporary volume is that it allows the use of utilities that affect file system metadata, such as fsck and fsdb, without affecting the original file system.
 

This article discusses how to troubleshoot VxFS filesystem corruption.
 

UMI: V-3-21268