From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
To: Pierre Neidhardt <mail@ambrevar.xyz>
Cc: 40236@debbugs.gnu.org
Subject: [bug#40236] [PATCH] doc: Suggest Btrfs with compression instead of ext4 for root partition.
Date: Mon, 30 Mar 2020 21:52:43 -0400 [thread overview]
Message-ID: <87h7y5z3x0.fsf@gmail.com> (raw)
In-Reply-To: <20200326083524.20275-1-mail@ambrevar.xyz> (Pierre Neidhardt's message of "Thu, 26 Mar 2020 09:35:24 +0100")
Hi!
Pierre Neidhardt <mail@ambrevar.xyz> writes:
> * gnu/system/examples/desktop.tmpl: Adjust root file-system to use Btrfs.
> ---
> gnu/system/examples/desktop.tmpl | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/gnu/system/examples/desktop.tmpl b/gnu/system/examples/desktop.tmpl
> index 3931bad60d..e61e8064cd 100644
> --- a/gnu/system/examples/desktop.tmpl
> +++ b/gnu/system/examples/desktop.tmpl
> @@ -34,7 +34,8 @@
> (list (file-system
> (device (file-system-label "my-root"))
> (mount-point "/")
> - (type "ext4")
> + (type "btrfs")
> + (options "subvol=rootfs,compress=zstd")
> (dependencies mapped-devices))
> (file-system
> (device (uuid "1234-ABCD" 'fat))
I think Btrfs with compression is a fine, modern default of a file
system, but we shall get a good samples of opinions (I expect a variety
of them :-)) and common agreement before pushing this change.
For those wondering about the benefits of having the root file system on
a subvolume (named 'rootfs' in the proposed configuration), the
following page [0] explains it as:
[...] The above layout, which obviously serves as the system's
"main" filesystem, places data directly within the top-level
subvolume (namely everything for example /usr, that's not in a
child subvolume) This makes changing the structure (for example to
something more flat) more difficult, which is why it's generally
suggested to place the actual data in a subvolume (that is not the
top-level subvolume), in the above example, a better layout would
be the following:
toplevel (volume root directory, not mounted)
\-- root (subvolume root directory, to be mounted at /)
+-- home (subvolume root directory)
+-- var (subvolume root directory)
+-- www (subvolume root directory)
+-- lib (directory)
\-- postgresql (subvolume root directory)
In short, it allows exposing just the subvolumes which should be
visible, instead of everything.
I've marked this blocked by 37305, which includes GRUB support for
booting from a subvolume as well as documentation about Btrfs usage in
Guix.
[0] https://btrfs.wiki.kernel.org/index.php/SysadminGuide#Layout
next prev parent reply other threads:[~2020-03-31 1:53 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-26 8:35 [bug#40236] [PATCH] doc: Suggest Btrfs with compression instead of ext4 for root partition Pierre Neidhardt
2020-03-31 1:52 ` Maxim Cournoyer [this message]
2020-03-31 7:52 ` Pierre Neidhardt
2020-03-31 14:53 ` Pierre Neidhardt
2020-03-31 23:20 ` Maxim Cournoyer
2020-04-01 7:00 ` Pierre Neidhardt
2020-05-02 13:29 ` Pierre Neidhardt
2020-05-02 13:50 ` Marius Bakke
2020-05-02 13:58 ` Pierre Neidhardt
2020-05-02 19:03 ` Maxim Cournoyer
2020-05-03 7:01 ` Pierre Neidhardt
2020-05-04 15:22 ` Maxim Cournoyer
2020-04-01 21:28 ` Ludovic Courtès
2020-04-02 7:15 ` Pierre Neidhardt
2020-04-02 8:04 ` Ludovic Courtès
2020-04-02 10:36 ` Jonathan Brielmaier
2020-04-04 1:28 ` Maxim Cournoyer
2020-04-06 20:20 ` Pierre Neidhardt
2020-04-06 20:42 ` Jonathan Brielmaier
2020-04-07 7:07 ` Pierre Neidhardt
2020-04-08 3:18 ` Maxim Cournoyer
2020-04-09 20:12 ` Efraim Flashner
2020-04-10 7:39 ` Pierre Neidhardt
2020-04-10 8:24 ` Efraim Flashner
2020-04-10 9:04 ` Pierre Neidhardt
2020-04-14 2:20 ` Maxim Cournoyer
2020-04-14 6:53 ` Pierre Neidhardt
2020-05-31 7:39 ` Pierre Neidhardt
2020-05-31 7:55 ` Efraim Flashner
2020-06-01 4:21 ` Maxim Cournoyer
2020-06-01 6:16 ` Efraim Flashner
2020-06-01 7:48 ` Pierre Neidhardt
2020-06-01 18:29 ` Maxim Cournoyer
2020-05-31 21:07 ` Ludovic Courtès
2020-06-01 5:03 ` Maxim Cournoyer
2020-06-02 13:37 ` Pierre Neidhardt
2020-06-03 20:00 ` bug#40236: " Ludovic Courtès
2020-06-04 9:17 ` [bug#40236] " Pierre Neidhardt
2020-06-01 4:49 ` Maxim Cournoyer
2020-03-31 12:09 ` Jonathan Brielmaier
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