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). 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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