archive mirror
 help / color / mirror / Atom feed
From: Bernd Schubert <>
To: Kent Overstreet <>,,,
Subject: Re: bcachefs - snapshots
Date: Mon, 27 Sep 2021 15:06:45 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <YVEjEwCiqje7yDyV@moria.home.lan>

On 9/27/21 3:49 AM, Kent Overstreet wrote:
> Snapshots have been merged! 9 months of work and 3k lines of new code, finally
> released. Some highlights:
>  - btrfs style subvolumes & snapshots interface
>  - snapshots are writeable
>  - highly scalable: number of snapshots is limited only by your disk space
>  - highly space efficient: no internal fragmentation issues
> Design doc here:
> The core functionality is complete - snapshot creation and deletion works, fsck
> changes are done (most of the complexity was in making fsck work without
> O(number of snapshots) performance - tricky). Everything else is a todo item:
>  - still need to export different st_dev for files in different subvolumes
>    (we'll never allocate a new inode with an inode number that collides with an
>    inode inother subvolume - but snapshots will naturally result in colliding
>    inode numbers)

With my limited high level view on it - shouldn't you discuss with Neil
about a solution and to avoid going the btrfs route for colliding inode

  reply	other threads:[~2021-09-27 13:06 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-27  1:49 bcachefs - snapshots Kent Overstreet
2021-09-27 13:06 ` Bernd Schubert [this message]
2021-09-27 16:43   ` Frank Filz

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).