But how can I check if the applied temporary value has been correctly
set? Maybe I'm doing something wrong, but this:
# ceph tell osd.2 config set osd_max_backfills 8
{
"success": "osd_max_backfills = '8' "
}
# ceph tell osd.2 config get osd_max_backfills
{
"osd_max_backfills": "1000"
}
makes little sense to me.
On 05/10/22 12:13, Anthony D'Atri wrote:
Injection modifies the running state of the specified daemons. It does not modify the central config database (saved / persistent state). Injected values will go away when the daemon restarts.
On Oct 5, 2022, at 6:10 AM, Nicola Mori <mori@xxxxxxxxxx> wrote:
Dear Ceph users,
I am trying to tune my cluster's recovery and backfill. On the web I found that I can set related tunables by e.g.:
ceph tell osd.* injectargs --osd-recovery-sleep-hdd=0.0 --osd-max-backfills=8 --osd-recovery-max-active=8 --osd-recovery-max-single-start=4
but I cannot find a way to be sure that the settings have been correctly applied and are being honored. Actually, when querying OSD settings I get e.g.:
# ceph config show osd.0 | grep osd_max_backfill
osd_max_backfills 1000 override
This does not change even if I try to set just a single property for a single osd:
# ceph tell osd.0 injectargs --osd-max-backfills=8
{}
osd_max_backfills = '8' osd_recovery_max_active = '1000'
# ceph config show osd.0 | grep osd_max_backfills
osd_max_backfills 1000 override
Am I overlooking or doing something wrong?
Thanks,
Nicola
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--
Nicola Mori, Ph.D.
INFN sezione di Firenze
Via Bruno Rossi 1, 50019 Sesto F.no (Italy)
+390554572660
mori@xxxxxxxxxx
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