From: Russell Coker <russell@coker.com.au>
To: linux-btrfs@vger.kernel.org
Subject: btrfs-progs: btrfs dev usa as non-root is wrong and should just abort
Date: Wed, 10 Jul 2024 21:52:14 +1000 [thread overview]
Message-ID: <2159193.PIDvDuAF1L@cupcakke> (raw)
Below is the difference between running btrfs dev usa as root and non-root on
a laptop with kernel 6.8.12-amd64. When run as non-root it gets everything
wrong and in my tests I have never been able to see it give nay accurate data
as non-root. I think it should just abort with an error in that situation,
there's no point in giving a wrong answer.
# btrfs dev usa /
/dev/mapper/root, ID: 1
Device size: 476.37GiB
Device slack: 1.50KiB
Data,single: 216.01GiB
Metadata,DUP: 6.00GiB
System,DUP: 64.00MiB
Unallocated: 254.29GiB
$ btrfs dev usa /
WARNING: cannot read detailed chunk info, per-device usage will not be shown,
run as root
/dev/mapper/root, ID: 1
Device size: 952.73MiB
Device slack: 16.00EiB
Unallocated: 476.37GiB
--
My Main Blog http://etbe.coker.com.au/
My Documents Blog http://doc.coker.com.au/
next reply other threads:[~2024-07-10 11:59 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-10 11:52 Russell Coker [this message]
2024-07-10 16:29 ` btrfs-progs: btrfs dev usa as non-root is wrong and should just abort Boris Burkov
2024-07-11 3:50 ` Russell Coker
2024-07-10 21:13 ` Qu Wenruo
2024-07-11 3:42 ` Russell Coker
2024-07-11 3:47 ` Qu Wenruo
2024-07-11 3:55 ` Russell Coker
2024-07-11 3:58 ` Qu Wenruo
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=2159193.PIDvDuAF1L@cupcakke \
--to=russell@coker.com.au \
--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