Hi all, I have a ceph cluster in production. Most of the write requests are small. I found that iops is a bottleneck. I want to move all of the journal datas to partitions on SSDs. Here is the procedures: 1.Set noout flag. ceph osd set noout 1.Stop osd 0 2.Copy the journal datas to new partitions. cp /dev/sda1 /dev/sdb1 3.Delete the journal link. rm /var/lib/ceph/osd/ceph-0/journal 4.Create journal link. ln -s /dev/sdb1 /var/lib/ceph/osd/ceph-0/journal 5.Start osd 0 6.Do step 1 to step 5 for all osds 7.Unset noout flag. ceph osd unset noout Is this Ok? Since the size of jornal partitions on SSDs is 10G, I want to set filestore max sync interval to 30 minutes. Is 30 minutes resonable? How to set filestore max sync interval on the fly? Any help, is highly appreciated. Thanks! _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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