Swift is said to be eventually consistent because the data is stored then eventually distributed in a balanced way. You don't need to manually re-balance the rings constantly. Swift will do that for you. Re-balancing rings is usually initiated after you *change the ring structure*(add/remove regions, add/remove zones, change device weights, etc).
In your case since you only have one node, Swift will distribute the replicas across all 3 zones assuming you've configured 3x replication. When you add a node and update the rings, yes you'll want to re-balance. That will tell Swift to put a replica on the new node since Swift default behavior is to keep replica placements "as unique as possible". That's the actual Swift vernacular everyone uses. ; ) Unique replica placement strategy is as follows: Region (if defined) > Zone > Node > Device > Device with fewest replicas Good luck. Adam *Adam Lawson* AQORN, Inc. 427 North Tatnall Street Ste. 58461 Wilmington, Delaware 19801-2230 Toll-free: (888) 406-7620 On Thu, Mar 27, 2014 at 12:48 PM, Roman Kravets <soft...@gmail.com> wrote: > Dear Adam, > > I have one storage server and 12 hard drives on it. > For test I split disk to 4 zones. If I rightly understood, swift load date > during "re-balance ring" and load data right away to correct node. > > -- > Best regards, > Roman Kravets > > > On Thu, Mar 27, 2014 at 10:05 PM, Adam Lawson <alaw...@aqorn.com> wrote: > >> Probably has to do with the fact you (I'm guessing) don't have very many >> drives on that server. Is that a correct statement? I know that even with >> 50 drives across a cluster (still very small), rings balance is at 100% >> until the rings are adequately balanced. Look at your ring stats, drive >> count and 5 zones for more consistent reports. >> >> >> *Adam Lawson* >> AQORN, Inc. >> 427 North Tatnall Street >> Ste. 58461 >> Wilmington, Delaware 19801-2230 >> Toll-free: (888) 406-7620 >> >> >> >> On Thu, Mar 27, 2014 at 10:20 AM, Кравец Роман <soft...@gmail.com> wrote: >> >>> Hello. >>> >>> I installed Openstack Swift to test server and upload 50 gb data. >>> Now I see it in the log: >>> root@storage1:/var/staff/softded# tail -n 1000 -f /var/log/syslog | >>> grep replicated >>> Mar 27 19:44:24 storage1 object-replicator 112746/187053 (60.27%) >>> partitions replicated in 300.01s (375.81/sec, 3m remaining) >>> Mar 27 19:47:44 storage1 object-replicator 187053/187053 (100.00%) >>> partitions replicated in 499.71s (374.32/sec, 0s remaining) >>> Mar 27 19:53:14 storage1 object-replicator 112863/187068 (60.33%) >>> partitions replicated in 300.01s (376.20/sec, 3m remaining) >>> Mar 27 19:56:29 storage1 object-replicator 187068/187068 (100.00%) >>> partitions replicated in 494.53s (378.27/sec, 0s remaining) >>> Mar 27 20:01:59 storage1 object-replicator 112343/187080 (60.05%) >>> partitions replicated in 300.01s (374.47/sec, 3m remaining) >>> Mar 27 20:05:18 storage1 object-replicator 187080/187080 (100.00%) >>> partitions replicated in 498.55s (375.25/sec, 0s remaining) >>> Mar 27 20:10:48 storage1 object-replicator 112417/187092 (60.09%) >>> partitions replicated in 300.01s (374.71/sec, 3m remaining) >>> >>> Why object-replicator show different percent every time? >>> >>> Thank you! >>> >>> -- >>> Best regards, >>> Roman Kravets >>> >>> _______________________________________________ >>> Mailing list: >>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>> Post to : openstack@lists.openstack.org >>> Unsubscribe : >>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>> >> >> >
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