qcow2fuse

KO | EN

gitlite — search

#python #hacktoberfest #ai #typescript #llm #golang #go #deep-learning #nodejs #cli #kubernetes #vue #awesome-list #mcp

(★ 8)

FUSE userspace mounting of .qcow2 images

qcow2fuse 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

Was this content helpful?

★ 0 (0 ratings)

# qcow2fuse
FUSE userspace mounting of .qcow2 images

<pre>
Usage: qcow2fuse.bash [-o fakeroot] [-o ro] [-o rawnbd] [-p PART_ID] imagefile mountpoint
       qcow2fuse.bash -u mountpoint
       qcow2fuse.bash -l imagefile
</pre>

Supports read-write and read-only modes.

Supports .qcow2 files with backing files.

qcow2fuse uses [qemu-nbd](https://manpages.debian.org/testing/qemu-utils/qemu-nbd.8.en.html) and [nbdfuse](https://libguestfs.org/nbdfuse.1.html) first to mount the whole .qcow2 image to a temporary location.  It then checks the mounted image for partitions using [parted](https://www.gnu.org/software/parted/manual/parted.html):
- if it is a non-partitioned image and partition ID was not specified with `-p`, qcow2fuse goes ahead and mounts the whole image to the specified mount point using [fuse2fs](http://manpages.ubuntu.com/manpages/bionic/man1/fuse2fs.1.html).
- if it is a partitioned image, and the specified partition ID (`-p`) matches an existing partition, then the offset and size of that partition are noted, then the initial qemu-nbd/nbdfuse mount is unmounted, then remounted using just the discovered offset and size to the temporary location.  This raw partition is then mounted to the specified mount point using fuse2fs.

`-u` unmounts an existing mountpoint, as well as the qemu-nbd/nbdfuse mount at a temporary location.

`-l` lists partitions, or lack thereof, discovered in the .qcow2 image.

`-o ro` mounts the image read-only

`-o fakeroot` allows non-privileged access to files in the disk image that are owned by user 0 (root)

`-o rawnbd` mounts the .qcow2 simply as a raw block device image file `nbd`.  This is useful for partition manipulation.

### Dependencies

1. [FUSE](https://www.kernel.org/doc/html/latest/filesystems/fuse.html).  FUSE support must be in the kernel, such that `/dev/fuse` has read-write permissions for all users.  Also libfuse.so and fusermount must be available.
2. qemu-nbd.  This binary exports a .qcow2 file as a read-write [NBD](https://en.wikipedia.org/wiki/Network_block_device), in this case via a unix socket
3. nbdfuse.  This binary takes the NBD exported by qemu-nbd and FUSE mounts it to the filesystem
4. parted.  parted was chosen over fdisk and gdisk for a couple of reasons:
  - It supports both MBR and GPT partition tables
  - It can provide output in machine-readable format
5. fuse2fs.  This binary takes a raw disk image and FUSE mounts it to the filesystem.  In this case, the raw disk image is the one provided by the nbdfuse/qemu-nbd mount.

The dependencies are all easily satisfied in [Ubuntu 20.04.1](https://wiki.ubuntu.com/FocalFossa/ReleaseNotes).  In particular, full FUSE support is already present, as is GNU parted.  qemu-nbd, nbdfuse and fuse2fs may all easily be installed with the apt package manager:

<pre>
sudo apt install qemu-utils
sudo apt install nbdfuse
sudo apt install fuse2fs
</pre>

If sudo access for apt is not available, these dependencies are all buildable from source, without further dependencies.

By default, the script will use the first instances of qemu-nbd, nbdfuse, fuse2fs, fusermount, parted and mountpoint binaries that it finds in the `$PATH` environment variable.  However these may be overriden by exporting `$QEMU_NBD`, `$NBDFUSE`, `$FUSE2FS`, `$FUSERMOUNT`, `$PARTED` and `$MOUNTPOINT` respective environment variables giving the required path to the appropriate binaries.

qcow2fuse

qcow2fuse 최신버젼 다운로드

오늘의 추천 프로젝트

Was this content helpful?

Recent Feedback

qcow2fuse

qcow2fuse 최신버젼 다운로드

오늘의 추천 프로젝트

Was this content helpful?

Recent Feedback

Download README