Am 10.12.2015 um 06:38 schrieb Robert LeBlanc: > I noticed this a while back and did some tracing. As soon as the PGs > are read in by the OSD (very limited amount of housekeeping done), the > OSD is set to the "in" state so that peering with other OSDs can > happen and the recovery process can begin. The problem is that when > the OSD is "in", the clients also see that and start sending requests > to the OSDs before it has had a chance to actually get its bearings > and is able to even service the requests. After discussion with some > of the developers, there is no easy way around this other than let the > PGs recover to other OSDs and then bring in the OSDs after recovery (a > ton of data movement). Many thanks for your detailed analysis. It's a bit disappointing that there seems to be no easy way around. Any work to improve the situation is much appreciated. In the meantime, I'll be experimenting with pre-seeding the VFS cache to speed things up at least a little bit. Regards Christian -- Dipl-Inf. Christian Kauhaus <>< · kc@xxxxxxxxxxxxxxx · +49 345 219401-0 Flying Circus Internet Operations GmbH · http://flyingcircus.io Forsterstraße 29 · 06112 Halle (Saale) · Deutschland HR Stendal 21169 · Geschäftsführer: Christian Theune, Christian Zagrodnick
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