Thanks. I found that both minimum and active set are very large in my cluster, is it expected? By the way, I do snapshot for each image half an hour，and keep snapshots for two days. Journal status: minimum_set: 671839 active_set: 1197917 registered clients: [id=, commit_position=[positions=[[object_number=4791670, tag_tid=3, entry_tid=4146742458], [object_number=4791669, tag_tid=3, entry_tid=4146742457], [object_number=4791668, tag_tid=3, entry_tid=4146742456], [object_number=4791671, tag_tid=3, entry_tid=4146742455]]], state=connected] [id=89024ad3-57a7-42cc-99d4-67f33b093704, commit_position=[positions=[[object_number=2687357, tag_tid=3, entry_tid=1188516421], [object_number=2687356, tag_tid=3, entry_tid=1188516420], [object_number=2687359, tag_tid=3, entry_tid=1188516419], [object_number=2687358, tag_tid=3, entry_tid=1188516418]]], state=connected] > On Nov 6, 2018, at 3:39 AM, Jason Dillaman <jdillama@xxxxxxxxxx> wrote: > > On Sun, Nov 4, 2018 at 11:59 PM Wei Jin <wjin.cn@xxxxxxxxx> wrote: >> >> Hi, Jason, >> >> I have a question about rbd mirroring. When enable mirroring, we observed that there are a lot of objects prefix with journal_data, thus it consumes a lot of disk space. >> >> When will these journal objects be deleted? And are there any parameters to accelerate it? >> Thanks. >> > > Journal data objects should be automatically deleted when the journal > is trimmed beyond the position of the object. If you run "rbd journal > status --image <image-name>", you should be able to see the minimum > in-use set and the current active set for new journal entries: > > $ rbd --cluster cluster1 journal status --image image1 > minimum_set: 7 > active_set: 8 > registered clients: > [id=, commit_position=[positions=[[object_number=33, tag_tid=2, > entry_tid=49153], [object_number=32, tag_tid=2, entry_tid=49152], > [object_number=35, tag_tid=2, entry_tid=49151], [object_number=34, > tag_tid=2, entry_tid=49150]]], state=connected] > [id=81672c30-d735-46d4-a30a-53c221954d0e, > commit_position=[positions=[[object_number=30, tag_tid=2, > entry_tid=48034], [object_number=29, tag_tid=2, entry_tid=48033], > [object_number=28, tag_tid=2, entry_tid=48032], [object_number=31, > tag_tid=2, entry_tid=48031]]], state=connected] > > $ rados --cluster cluster1 --pool rbd ls | grep journal_data | sort > journal_data.1.1029b4577f90.28 > journal_data.1.1029b4577f90.29 > journal_data.1.1029b4577f90.30 > journal_data.1.1029b4577f90.31 > journal_data.1.1029b4577f90.32 > journal_data.1.1029b4577f90.33 > journal_data.1.1029b4577f90.34 > journal_data.1.1029b4577f90.35 > <......> > > $ rbd --cluster cluster1 journal status --image image1 > minimum_set: 8 > active_set: 8 > registered clients: > [id=, commit_position=[positions=[[object_number=33, tag_tid=2, > entry_tid=49153], [object_number=32, tag_tid=2, entry_tid=49152], > [object_number=35, tag_tid=2, entry_tid=49151], [object_number=34, > tag_tid=2, entry_tid=49150]]], state=connected] > [id=81672c30-d735-46d4-a30a-53c221954d0e, > commit_position=[positions=[[object_number=33, tag_tid=2, > entry_tid=49153], [object_number=32, tag_tid=2, entry_tid=49152], > [object_number=35, tag_tid=2, entry_tid=49151], [object_number=34, > tag_tid=2, entry_tid=49150]]], state=connected] > > $ rados --cluster cluster1 --pool rbd ls | grep journal_data | sort > journal_data.1.1029b4577f90.32 > journal_data.1.1029b4577f90.33 > journal_data.1.1029b4577f90.34 > journal_data.1.1029b4577f90.35 > > -- > Jason _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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