THIN_CHECK
THIN_CHECK
NAMESYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
DIAGNOSTICS
SEE ALSO
AUTHOR
NAME
thin_check − repair thin provisioning metadata on device or file
SYNOPSIS
thin_check [options] {device|file}
DESCRIPTION
thin_check checks thin provisioning metadata created by the device-mapper thin provisioning target on a device or file.
OPTIONS
−q, −−quiet
Suppress output messages, return only exit code.
−h, −−help
Print help and exit.
−V, −−version
Output version information and exit.
−−super−block−only
Only check the superblock is present.
−−skip-mappings
Skip checking of the block mappings which make up the bulk of the metadata.
−−ignore−non−fatal−errors
thin_check will only return a non-zero exit code if it finds a fatal error. An example of a on fatal error is an incorrect data block reference count causing a block to be considered allocated when it in fact isn’t. Ignoring errors for a long time is not advised, you really should be using thin_repair to fix them.
EXAMPLE
Analyses and repairs thin provisioning metadata on logical volume /dev/vg/metadata:
thin_check /dev/vg/metadata
The device may not be actively used by the target when running.
DIAGNOSTICS
thin_check returns an exit code of 0 for success or 1 for error.
SEE ALSO
thin_dump(8) thin_repair(8) thin_restore(8) thin_rmap(8) thin_metadata_size(8)
AUTHOR
Joe Thornber
<ejt@redhat.com>
Heinz Mauelshagen <HeinzM@RedHat.com>
Opportunity
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
Free Books
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Education
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.
