From: "Niccolò Belli" <darkbasic@linuxsystems.it>
To: <linux-btrfs@vger.kernel.org>
Subject: Amount of scrubbed data goes from 15.90GiB to 26.66GiB after defragment -r -v -clzo on a fs always mounted with compress=lzo
Date: Wed, 11 May 2016 21:50:43 +0200 [thread overview]
Message-ID: <264486fb-94ce-4040-a436-e9db5de9a203@linuxsystems.it> (raw)
Hi,
Before doing the daily backup I did a btrfs check and btrfs scrub as usual.
After that this time I also decided to run btrfs filesystem defragment -r
-v -clzo on all subvolumes (from a live distro) and just to be sure I
runned check and scrub once again.
Before defragment: total bytes scrubbed: 15.90GiB with 0 errors
After defragment: total bytes scrubbed: 26.66GiB with 0 errors
What did happen? This is something like a night and day difference: almost
double the data! As stated in the subject all the subolumes have always
been mounted with compress=lzo in /etc/fstab, even when I installed the
distro a couple of days ago I manually mounted the subvolumes with -o
compress=lzo. Instead I never used autodefrag.
Niccolò
next reply other threads:[~2016-05-11 19:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-11 19:50 Niccolò Belli [this message]
2016-05-11 20:07 ` Amount of scrubbed data goes from 15.90GiB to 26.66GiB after defragment -r -v -clzo on a fs always mounted with compress=lzo Christoph Anton Mitterer
2016-05-12 10:18 ` Duncan
2016-05-12 13:56 ` Niccolò Belli
2016-05-13 6:11 ` Duncan
2016-05-20 15:51 ` Niccolò Belli
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=264486fb-94ce-4040-a436-e9db5de9a203@linuxsystems.it \
--to=darkbasic@linuxsystems.it \
--cc=linux-btrfs@vger.kernel.org \
/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).