> I have a 4 nodes with 112 OSDs each [...] As an aside I rekon that is not such a good idea as Ceph was designed for one-small-OSD per small-server and lots of them, but lots of people of course know better.
> Maybe you can gimme a hint how to struggle it over? That is not so much a Ceph question but a distribution question anyhow there are two possible hints that occur to me: * In most distributions the automatic activation of block devices is done by the kernel plus 'udevd' rules and/or 'systemd' units. * There are timeouts for activation of storage devices and on a system with many, depending on type etc., there may be a default setting to activate them serially instead of in parallel to prevent sudden power consumption and other surges, so some devices may not activate because of timeouts. You can start by asking the sysadmin for those machines to look at system logs (distribution dependent) for storage device activation reports to confirm whether the guesses above apply to your situation and if confirmed you can ask them to change the relevant settings for the distribution used. _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
