On 28-07-15 14:29, Sage Weil wrote: > On Tue, 28 Jul 2015, Wido den Hollander wrote: >> Hi, >> >> I was trying to inject a pre_start command on a bunch of OSDs under >> Ubuntu 14.04, but that didn't work. >> >> I found out that only the sysvinit script execute pre_start commands, >> but the upstart nor the systemd scripts do this. >> >> Is this a thing which will disappear or is this just a oversight? >> >> I'm actually using "sleep 30" as a pre-start to prevent all OSDs from >> starting at the same time. Big boxes which die under the workload of all >> OSDs starting at the same time. >> >> I also try to prevent a lot of OSDMap changes by booting the OSDs slowly >> so I tried to fix this with "pre_start". > > I was hoping to let it die... > > I would take a fresh look at systemd and see if there is a > different/better mechanism there to address the startup issue. You can > manually add a prestart script/command to the unit file... > Oh, it doesn't matter if it dies out. It's just that there will probably be scenarios where users want to do some sort of pre-start before a OSD is executed. The update_crush hook is one of the examples which is already executed for example. A pre_start which does a mount for example (for those without udev) might be useful. Wido > sage > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
