From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michael Tremer <michael.tremer@ipfire.org>
To: development@lists.ipfire.org
Subject: Re: [PATCH 00/17] BTRFS support on IPFire 2.x (experimental)
Date: Mon, 18 Mar 2024 16:18:04 +0000
Message-ID: <A09B1A9D-BFB9-4F44-8E3D-65B64201A23D@ipfire.org>
In-Reply-To: <20240315191442.3951-1-stefan.schantl@ipfire.org>
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Hello Stefan,

> On 15 Mar 2024, at 19:14, Stefan Schantl <stefan.schantl(a)ipfire.org> wrot=
e:
>=20
> Hello mailinglist followers,
>=20
> this first patchset will introduce basic BTRFS support in IPFire 2.x.

Thank you for submitting this. I have been looking forward to see this on her=
e.

Although it is still early days, I would like to merge this as soon as possib=
le and generally consider this an experimental feature for a long time to com=
e. There probably won't be any tangible advantages for our users, but we shou=
ld have a better option to roll back any physical installations if any experi=
mental updates go wrong.

> It allows to choose BTRFS during installation as filesystem, will
> install IPFire and bring it up as usual.
>=20
> The main difference to the other file system will be displayed when
> showing the current mounted filesystems. When using BTRFS a lot of so
> called subvolumes will be created. They act as some kind of logical
> partition and are needed in two cases.
>=20
> This kind of fragmentation allows to create snapshots of such a
> subvolume and only the stored data on it. The more important reason of
> using subvolumes is, that while creating a snapshot any files which are
> located on a different subvolume will not be part of it.
>=20
> So, when creating a snaphot of the filesystem root and restoring
> it back later, no files which are part of a subvolume (logfile, database
> files etc) are rolled-back. This helps us debugging because the old logs
> are still there and mostly important prevents from data lost of altered
> databases or newly created files!
>=20
> Currently there is still some work to do see:
>=20
> Wiki-Roadmap: https://www.ipfire.org/docs/roadmap/btrfs
> Bugzilla: https://bugzilla.ipfire.org/show_bug.cgi?id=3D13606
>=20
> Stefan Schantl (17):
>  btrfs-progs: New package
>  installer: Allow to install IPFire on BTRFS
>  installer: Ensure to always create the /boot directory.
>  installer: Disable seperate boot partition
>  installer: Add code to create a BTRFS subvolume layout.
>  installer: Correctly umount main BTRFS partition.
>  installer: Add recurisve mkdir function
>  installer: Mount BTRFS layout  before installing the system
>  installer: Add /var/tmp to the BTRFS layout
>  installer: Fix using BTRFS mount options when mounting the layout
>  installer: Add code to proper unmount the BTRFS layout
>  installer: Add code to correctly write the fstab when installing on
>    BTRFS
>  installer: Define common mount options for BTRFS volumes
>  inotify-tools: New package
>  grub-btrfs: New package
>  installer: Mark BTRFS support as experimental
>  installer: Adjust BTRFS layout
>=20
> config/rootfiles/common/btrfs-progs         |  33 +++
> config/rootfiles/common/grub-btrfs          |  14 ++
> config/rootfiles/common/inotify-tools       |  19 ++
> config/rootfiles/common/x86_64/initscripts  |   4 +
> lfs/btrfs-progs                             |  85 ++++++++
> lfs/grub-btrfs                              |  79 +++++++
> lfs/initscripts                             |   3 +
> lfs/inotify-tools                           |  83 ++++++++
> make.sh                                     |   3 +
> src/initscripts/system/grub-btrfsd          |  61 ++++++
> src/installer/dracut-module/module-setup.sh |   4 +-
> src/installer/hw.c                          | 221 +++++++++++++++++++-
> src/installer/hw.h                          |   8 +
> src/installer/main.c                        |   1 +
> 14 files changed, 606 insertions(+), 12 deletions(-)
> create mode 100644 config/rootfiles/common/btrfs-progs
> create mode 100644 config/rootfiles/common/grub-btrfs
> create mode 100644 config/rootfiles/common/inotify-tools
> create mode 100644 lfs/btrfs-progs
> create mode 100644 lfs/grub-btrfs
> create mode 100644 lfs/inotify-tools
> create mode 100644 src/initscripts/system/grub-btrfsd
>=20
> --=20
> 2.39.2
>=20


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