Project Summary
libguestfs is a library for accessing and modifying guest disk images. Amongst the things this is good for: making batch configuration changes to guests, getting disk used/free statistics (see also: virt-df), migrating between virtualization systems (see also: virt-p2v), performing partial backups, performing partial guest clones, cloning guests and changing registry/UUID/hostname info, and much else besides.
libguestfs uses Linux kernel and qemu code, and can access any type of guest filesystem that Linux and qemu can, including but not limited to: ext2/3/4, btrfs, FAT and NTFS, LVM, many different disk partition schemes, qcow, qcow2, vmdk.
libguestfs has bindings for C, C++, OCaml, Perl, Python, Ruby or Java.
In a Nutshell, libguestfs...
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has a well established, mature codebase
maintained by a large development team
with stable Y-O-Y commits -
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took an estimated 90 years of effort (COCOMO model)
starting with its first commit in March, 2009
ending with its most recent commit about 22 hours ago
GNU General Public License v2.0 or later
Permitted
Commercial Use
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Distribute
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These details are provided for information only. No information here is legal advice and should not be used as such.
GNU Lesser General Public License v2.1 or later
Permitted
Commercial Use
Modify
Distribute
Forbidden
Sub-License
Hold Liable
Required
Distribute Original
Disclose Source
Include Copyright
State Changes
Include License
Include Notice
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
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30 Day SummaryJun 27 2025 — Jul 27 2025
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