[ceph-users] Re: High ceph_osd_commit_latency_ms on Toshiba MG07ACA14TE HDDs

Am 24.06.2020 um 18:08 schrieb Marc Roos:

I can remember reading this before. I was hoping you maybe had some setup with systemd scripts or maybe udev.

We use udev to disable write cache once a suitable disk is detected, base on the MODEL_ID from udev environment: ACTION=="add", SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", ENV{ID_MODEL}=="WDC_WUH721414ALE6L4", RUN+="/usr/sbin/smartctl -s wcache,off $kernel" HTH, Michael