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. > > 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
 |