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Userspace utilities to manage btrfs filesystems
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David Sterba 76ab1fa364 btrfs-progs: rename and move group_profile_max_safe_loss
The helper belongs to the others that translate bg flags to the raid
attr table member.

Signed-off-by: David Sterba <dsterba@suse.com>
2021-09-07 16:38:56 +02:00
check btrfs-progs: use btrfs_key for btrfs_check_node() and btrfs_check_leaf() 2021-09-07 13:58:44 +02:00
ci btrfs-progs: ci: add script to do build test on musl 2021-07-26 13:45:35 +02:00
cmds btrfs-progs: qgroup create: accept only valid qgroupid 2021-09-07 14:20:42 +02:00
common btrfs-progs: rename and move group_profile_max_safe_loss 2021-09-07 16:38:56 +02:00
convert btrfs-progs: split parsing helpers from utils.c 2021-09-06 17:15:51 +02:00
crypto btrfs-progs: unify GPL header comments 2021-09-07 13:58:44 +02:00
Documentation btrfs-progs: mkfs: allow degenerate raid0/raid10 2021-08-27 15:40:53 +02:00
image btrfs-progs: image: fix restored image size misalignment 2021-08-25 15:38:53 +02:00
kernel-lib
kernel-shared btrfs-progs: rename and move group_profile_max_safe_loss 2021-09-07 16:38:56 +02:00
libbtrfsutil libbtrfsutil: fix race between subvolume iterator and deletion 2021-07-29 13:01:55 +02:00
m4
mkfs btrfs-progs: rename and move group_profile_max_safe_loss 2021-09-07 16:38:56 +02:00
tests btrfs-progs: tests: add mkfs test for raid0/1 and raid10/2 2021-08-27 15:40:53 +02:00
.editorconfig
.gitignore
64-btrfs-dm.rules
autogen.sh
btrfs-completion
btrfs-corrupt-block.c btrfs-progs: corupt-block: leave only long option for --block-group 2021-08-25 15:38:54 +02:00
btrfs-crc.c
btrfs-debugfs
btrfs-find-root.c
btrfs-fragments.c
btrfs-list.c
btrfs-list.h
btrfs-map-logical.c
btrfs-sb-mod.c
btrfs-select-super.c
btrfs.c
btrfsck.h
btrfstune.c
CHANGES btrfs-progs: update CHANGES for 5.13.1 2021-07-30 16:14:29 +02:00
configure.ac btrfs-progs: build: fix detection of ext4 i_{a,c,a}time_extra 2021-08-26 20:34:36 +02:00
COPYING
fsck.btrfs
INSTALL
ioctl.h btrfs-progs: mkfs: allow degenerate raid0/raid10 2021-08-27 15:40:53 +02:00
kerncompat.h
libbtrfs.sym
Makefile btrfs-progs: split parsing helpers from utils.c 2021-09-06 17:15:51 +02:00
Makefile.extrawarn
Makefile.inc.in
props.c btrfs-progs: props: init compression prop_handlers with field name 2021-09-07 13:58:44 +02:00
props.h
qgroup.c btrfs-progs: rename parse_qgroupid 2021-09-07 14:20:42 +02:00
qgroup.h
quick-test.c
random-test.c
README.md btrfs-progs: README: update links 2021-07-08 14:53:16 +02:00
send.h
show-blocks
VERSION Btrfs progs v5.13.1 2021-07-30 16:14:58 +02:00
version.h.in

Btrfs-progs coverity status

Userspace utilities to manage btrfs filesystems. License: GPLv2.

Btrfs is a copy on write (COW) filesystem for Linux aimed at implementing advanced features while focusing on fault tolerance, repair and easy administration.

This repository hosts following utilities:

  • btrfs — the main administration tool (manual page)
  • mkfs.btrfs — utility to create the filesystem (manual page)
  • all-in-one binary in the busybox style with mkfs.btrfs, btrfs-image and other tools built-in (standalone tools)
  • libbtrfsutil (LGPL v2.1) — C and python 3 bindings, see libbtrfsutil/README.md for more

See INSTALL for build instructions and tests/README.md for testing information.

Release cycle

The major version releases are time-based and follow the cycle of the linux kernel releases. The cycle usually takes 2 months. A minor version releases may happen in the meantime if there are bug fixes or minor useful improvements queued.

The release tags are signed with a GPG key ID F2B4 1200 C54E FB30 380C 1756 C565 D5F9 D76D 583B, release tarballs are hosted at kernel.org. See file CHANGES or changelogs on wiki.

Reporting bugs

There are several ways, each has its own specifics and audience that can give feedback or work on a fix. The following list is sorted in the order of preference:

  • github issue tracker
  • to the mailing list linux-btrfs@vger.kernel.org -- (not required to subscribe), beware that the mail might get overlooked in other traffic
  • IRC (irc.freenode.net #btrfs) -- good for discussions eg. if a bug is already known, but reports could miss developers' attention
  • bugzilla.kernel.org -- (requires registration), set the product to Filesystems and component Btrfs, please put 'btrfs-progs' into the subject so it's clear that it's not a kernel bug report

Development

The patch submissions, development or general discussions take place at linux-btrfs@vger.kernel.org mailinglist, subsciption is not required to post.

The GitHub pull requests will not be accepted directly, the preferred way is to send patches to the mailinglist instead. You can link to a branch in any git repository if the mails do not make it to the mailinglist or just for convenience (makes it easier to test).

The development model of btrfs-progs shares a lot with the kernel model. The github way is different in some ways. We, the upstream community, expect that the patches meet some criteria (often lacking in github contributions):

  • one logical change per patch: eg. not mixing bugfixes, cleanups, features etc., sometimes it's not clear and will be usually pointed out during reviews
  • proper subject line: eg. prefix with btrfs-progs: subpart, ... , descriptive yet not too long, see git log --oneline for some inspiration
  • proper changelog: the changelogs are often missing or lacking explanation why the change was made, or how is something broken, what are user-visible effects of the bug or the fix, how does an improvement help or the intended usecase
  • the Signed-off-by line: this documents who authored the change, you can read more about the The Developer's Certificate of Origin (chapter 11)
    • if you are not used to the signed-off style, your contributions won't be rejected just because of it's missing, the Author: tag will be added as a substitute in order to allow contributions without much bothering with formalities

Source code coding style and preferences follow the kernel coding style. You can find the editor settings in .editorconfig and use the EditorConfig plugin to let your editor use that, or update your editor settings manually.

Testing

The testing documentation can be found in tests/ and continuous integration/container images in ci/.

Documentation updates

Documentation fixes or updates do not need much explanation so sticking to the code rules in the previous section is not necessary. GitHub pull requests are OK, patches could be sent to me directly and not required to be also in the mailinglist. Pointing out typos via IRC also works, although might get accidentally lost in the noise.

Third-party sources

Build dependencies are listed in INSTALL. Implementation of checksum/hash functions is provided by copies of the respective sources to avoid adding dependencies that would make deployments in rescure or limited environments harder. The implementations are portable and not optimized for speed nor accelerated. Optionally it's possible to use libgcrypt, libsodium or libkcapi implementations.

References