Hello,
Here is output of fi usage:

Overall:
    Device size:   14.55TiB
    Device allocated:   14.55TiB
    Device unallocated:   1.75GiB
    Device missing:     0.00B
    Device zone unusable:     0.00B
    Device zone size:     0.00B
    Used:   14.42TiB
    Free (estimated): 129.49GiB (min: 129.49GiB)
    Free (statfs, df): 129.49GiB
    Data ratio:       1.00
    Metadata ratio:       1.00
    Global reserve: 512.00MiB (used: 112.00KiB)
    Multiple profiles:         no
Data,single: Size:14.53TiB, Used:14.41TiB (99.14%)
   /dev/sds   14.53TiB
Metadata,single: Size:18.00GiB, Used:14.75GiB (81.95%)
   /dev/sds   18.00GiB
System,single: Size:256.00MiB, Used:6.05MiB (2.36%)
   /dev/sds 256.00MiB
Unallocated:
   /dev/sds   1.75GiB

And I'm unable to add another file at 30GiB.
Do you have any advice?

BTW,
blkzone report /dev/sds
returns:
"blkzone: /dev/sds: unable to determine zone size"

Thank you.

On Fri, Dec 17, 2021 at 3:51 PM Johannes Thumshirn
[off-list ref] wrote:

On 15/12/2021 16:51, David Sterba wrote:

quoted

On Wed, Dec 15, 2021 at 10:31:13PM +0800, Jingyun He wrote:

quoted

Hello,
I have a 14TB WDC HM-SMR disk formatted with BTRFS,
It looks like I'm unable to fill the disk full.
E.g. btrfs fi usage /disk1/
Free (estimated): 128.95GiB (min: 128.95GiB)

It still has 100+GB available
But I'm unable to put more files.

We'd need more information to diagnose that, eg. output of 'btrfs fi df'
to see if eg. the metadata space is not exhausted or if the remaining
128G account for the unusable space in the zones (this is also in the
'fi df' output).

Can you also share the output of 'blkzone report /dev/sdX'?


Thanks a lot,
        Johannes