When you do ceph pg scrub <pgid> it will notice the missing object (you should see it go by with ceph -w or the message in /var/log/ceph/ceph.log on a monitor node), and the PG will get an 'inconsistent' flag set. To trigger repair, you need to do ceph pg repair <pgid> sage On Mon, 24 Mar 2014, ljm李嘉敏 wrote: > Hi Kyle， > > Thank you very much for your explanation, I have triggered the relative pg to scrub, but the secondary replica which I remove manually isn't recovered, > it only shows that instructing pg xx.xxx on osd.x to scrub. > > PS: I use the ceph-deploy to deploy the ceph cluster, and the ceph.conf is the default configuration. > > Thanks & Regards > Li JiaMin > > -----邮件原件----- > 发件人: Kyle Bader [mailto:kyle.bader@xxxxxxxxx] > 发送时间: 2014年3月23日 10:05 > 收件人: ljm李嘉敏 > 抄送: ceph-users@xxxxxxxxxxxxxx > 主题: Re: why object can't be recovered when delete one replica > > > I upload a file through swift API, then delete it in the “current” > > directory in the secondary OSD manually, why the object can’t be recovered? > > > > If I delete it in the primary OSD, the object is deleted directly in > > the pool .rgw.bucket and it can’t be recovered from the secondary OSD. > > > > Do anyone know this behavior? > > This is because the placement group containing that object likely needs to scrub (just a light scrub should do). The scrub will compare the two replicas, notice the replica is missing from the secondary and trigger recovery/backfill. Can you try scrubbing the placement group containing the removed object and let us know if it triggers recovery? > > -- > > Kyle > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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