From: Anton Shepelev <anton.txt@gmail.com>
To: linux-btrfs@vger.kernel.org
Subject: Re: Interpreting `btrfs filesystem show'
Date: Mon, 15 Oct 2018 17:42:38 +0300 [thread overview]
Message-ID: <20181015174238.cb240bc0df3efffb92cec42a@gmail.com> (raw)
In-Reply-To: <20181015174040.6f4962336386d8549026908c@gmail.com>
Hugo Mills to Anton Shepelev:
>>While trying to resolve free space problems, and found
>>that I cannot interpret the output of:
>>
>>> btrfs filesystem show
>>
>>Label: none uuid: 8971ce5b-71d9-4e46-ab25-ca37485784c8
>> Total devices 1 FS bytes used 34.06GiB
>> devid 1 size 40.00GiB used 37.82GiB path /dev/sda2
>>
>>How come the total used value is less than the value
>>listed for the only device?
>
> "Used" on the device is the mount of space allocated.
>"Used" on the FS is the total amount of actual data and
>metadata in that allocation.
>
> You will also need to look at the output of "btrfs fi
>df" to see the breakdown of the 37.82 GiB into data,
>metadata and currently unused.
>
>See
>https://btrfs.wiki.kernel.org/index.php/FAQ#Understanding_free_space.2C_using_the_original_tools for the details
Thank you, Hugo, understood. mount/amount is a very fitting
typo :-)
Does the standard `du' tool work correctly for btfrfs?
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next prev parent reply other threads:[~2018-10-15 14:42 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-15 14:24 Interpreting `btrfs filesystem show' Anton Shepelev
2018-10-15 14:26 ` Hugo Mills
2018-10-15 14:30 ` Hugo Mills
[not found] ` <20181015174040.6f4962336386d8549026908c@gmail.com>
2018-10-15 14:42 ` Anton Shepelev [this message]
2018-10-15 15:02 ` Austin S. Hemmelgarn
2018-10-15 15:48 ` Martin Steigerwald
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