linux-btrfs.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: David Sterba <dsterba@suse.cz>
To: halfdog <me@halfdog.net>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: FIDEDUPERANGE woes
Date: Thu, 30 Jan 2020 17:59:36 +0100	[thread overview]
Message-ID: <20200130165936.GY3929@twin.jikos.cz> (raw)
In-Reply-To: <2019-1576167349.500456@svIo.N5dq.dFFD>

On Thu, Dec 12, 2019 at 04:15:49PM +0000, halfdog wrote:
> Hello list,
> 
> Using btrfs on
> 
> Linux version 5.3.0-2-amd64 (debian-kernel@lists.debian.org) (gcc version 9.2.1 20191109 (Debian 9.2.1-19)) #1 SMP Debian 5.3.9-3 (2019-11-19)
> 
> the FIDEDUPERANGE exposes weird behaviour on two identical but
> not too large files that seems to be depending on the file size.
> Before FIDEDUPERANGE both files have a single extent, afterwards
> first file is still single extent, second file has all bytes sharing
> with the extent of the first file except for the last 4096 bytes.
> 
> Is there anything known about a bug fixed since the above mentioned
> kernel version?

For the record, the fix(es) for deduplicating tail extents have been
merged to 5.6 and will appear in stable trees soon.

      parent reply	other threads:[~2020-01-30 16:59 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-12 16:15 FIDEDUPERANGE woes halfdog
2019-12-13  9:32 ` Qu Wenruo
2019-12-14  5:19   ` Zygo Blaxell
2019-12-14 11:21     ` Filipe Manana
2020-01-30 16:59 ` David Sterba [this message]

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:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

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

  git send-email \
    --in-reply-to=20200130165936.GY3929@twin.jikos.cz \
    --to=dsterba@suse.cz \
    --cc=linux-btrfs@vger.kernel.org \
    --cc=me@halfdog.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* 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).