Hi,
On 06/21/2016 01:30 AM, Marc Grondin wrote:
I have a btrfs filesystem ontop of a 4x1tb mdraid raid5 array and I've
been getting confusing output on metadata usage. Seems that even tho
both data and metadata are in single profile metadata is reporting
double the space(as if it was in dupe profile)
I guess that's a coincidence.
From the total amount of space you have (on top of the mdraid), there's
3 GiB allocated/reserved for use as metadata. Inside that 3 GiB, 1.53GiB
of actual metadata is present.
[...]
Metadata,single: Size:3.00GiB, Used:1.53GiB
/dev/mapper/storage2 3.00GiB
Metadata, single: total=3.00GiB, used=1.53GiB
If you'd change to DUP, it would look like:
for fi usage:
Metadata,single: Size:3.00GiB, Used:1.53GiB
/dev/mapper/storage2 6.00GiB
for fi df:
Metadata, single: total=3.00GiB, used=1.53GiB
Except for the 6.00GiB which would show the actual usage on disk, the
other metadata numbers all hide the profile ratio.
Hans
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