With recent releases, 'ceph config' is probably a better option; do
keep in mind this sets things cluster-wide. If you're just wanting to
target specific daemons, then tell may be better for your use case.
# get current value
ceph config get osd osd_max_backfills
# set new value to 2, for example
ceph config set osd osd_max_backfills 2
# to go back to default
ceph config rm osd osd_max_backfills
Of course, I suggest you test in a non-production cluster first. :)
David
On Wed, Sep 22, 2021 at 8:34 AM Pascal Weißhaupt
<pascal@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> Hi,
>
>
>
> I recently upgraded from Ceph 15 to Ceph 16 and when I want to change the max backfills via
>
>
>
> ceph tell 'osd.*' injectargs '--osd-max-backfills 1'
>
>
>
> I get no output:
>
>
>
> root@pve01:~# ceph tell 'osd.*' injectargs '--osd-max-backfills 1'
> osd.0: {}
> osd.1: {}
> osd.2: {}
> osd.3: {}
> osd.4: {}
> osd.5: {}
> osd.6: {}
> osd.7: {}
> osd.8: {}
> osd.9: {}
> osd.10: {}
> osd.11: {}
> osd.12: {}
> osd.13: {}
> osd.14: {}
> osd.15: {}
> osd.16: {}
> osd.17: {}
> osd.18: {}
> osd.19: {}
>
>
>
> If I remember correctly, with Ceph 15 I got something like "changed max backfills to 1" or so.
>
>
>
> Is that command not supported anymore or is the empty output correct?
>
>
>
> Regards,
>
> Pascal
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