2021年5月21日(金) 12:26 Satoru Takeuchi <satoru.takeuchi@xxxxxxxxx>: > > 2021年5月18日(火) 14:09 Satoru Takeuchi <satoru.takeuchi@xxxxxxxxx>: >> >> 2021年5月18日(火) 9:23 Satoru Takeuchi <satoru.takeuchi@xxxxxxxxx>: >> > >> > Hi, >> > >> > I have a Ceph cluster used for RGW and RBD. I found that all I/Os to >> > RGW seemed to be >> > blocked while dynamic resharding. Could you tell me whether this >> > behavior is by design or not? >> > >> > I attached a graph which means I/O seemed to be blocked. Here x-axis >> > is time and y-axis >> > is the number of RADOS objects. In addition, dynamic resharding was >> > run between 16:22:30 and 16:31:30. >> >> I uploaded my image to google photos (thank you Anthony to point it out). > > Can someone please answer this question? I can show you more detailed information if desired. I submitted an issue for this problem. https://tracker.ceph.com/issues/50945 Thanks, Satoru > >> >> >> https://photos.app.goo.gl/ZFJg7CQ4z6gfqmSX6 >> >> > >> > I read the official documents about dynamic resharding. But there is >> > no description about blocking during dynamic resharding. >> > >> > https://docs.ceph.com/en/octopus/radosgw/dynamicresharding/ >> > >> > In addition, I read the following Red Hat's blog post. >> > >> > https://www.redhat.com/ja/blog/ceph-rgw-dynamic-bucket-sharding-performance-investigation-and-guidance >> > >> > > You do not need to stop reading or writing objects to the bucket while resharding is happening. >> > >> > It would mean the dynamic resharding is online operation. However, >> > it's not clear whether this feature blocks I/Os or not. >> > >> > Thanks, >> > Satoru _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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