Thread (21 messages) 21 messages, 8 authors, 2012-11-12

Re: [RFC] btrfs fi df output [Was Re: BTRF - Storage Usage]

From: Roman Mamedov <hidden>
Date: 2012-09-28 03:18:04

On Thu, 27 Sep 2012 23:02:35 +0200
Goffredo Baroncelli [off-list ref] wrote:
Sorry for the space error:
Below a more correct example

$ btrfs filesystem disk-free /
Summary:
    Total:             	        135.00GB
    Allocated:             	 10.51GB
    Unallocated:            	124.49GB
    Free_(Estimated)              86.56GB
    Average_disk_efficiency:         62 %
How do you estimate "Free" here? Sorry I didn't check the source code in git,
but from the "Details" below nothing leads me to believe that this FS is
doomed to only be able to usefully utilize only ~86GB of the partition, and not
more.

Are you ready to answer the flood of questions from people why their disk is
only 62% efficient, and how to tune it to 100%? :-)

Why use underscores instead of spaces?

Details:
    Chunk-type    Mode       Allocated        Used        Free
    ----------    ----       ---------    --------   ---------
    Data          Single        4.01GB      2.16GB      1.87GB
    System        DUP          16.00MB      4.00KB      7.99MB
    System        Single        4.00MB        0.00      4.00MB
    Metadata      DUP           6.00GB    429.16MB      2.57GB
    Metadata      Single        8.00MB        0.00      8.00MB
-- 
With respect,
Roman

~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Stallman had a printer,
with code he could not see.
So he began to tinker,
and set the software free."

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