* Test infrastructure: 2 or more servers?
@ 2013-01-15 22:00 Gandalf Corvotempesta
2013-01-15 22:03 ` Xing Lin
0 siblings, 1 reply; 5+ messages in thread
From: Gandalf Corvotempesta @ 2013-01-15 22:00 UTC (permalink / raw)
To: ceph-devel
For a test infrastructure (that will be the definitive one after some
months) do you think that starting with only 2 servers and many ODSs
will be ok?
OpenStack swift suggest at least 3 servers (due to it's replica = 3),
with ceph is possible to start with 2 and then grow up to 3, 6 and so
on?
Is possible to change the number of replicas in realtime ?
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Test infrastructure: 2 or more servers?
2013-01-15 22:00 Test infrastructure: 2 or more servers? Gandalf Corvotempesta
@ 2013-01-15 22:03 ` Xing Lin
2013-01-15 22:26 ` Gandalf Corvotempesta
0 siblings, 1 reply; 5+ messages in thread
From: Xing Lin @ 2013-01-15 22:03 UTC (permalink / raw)
To: Gandalf Corvotempesta; +Cc: ceph-devel
You can change the number replicas in runtime with the following command:
$ ceph osd pool set {poolname} size {num-replicas}
Xing
On 01/15/2013 03:00 PM, Gandalf Corvotempesta wrote:
> Is possible to change the number of replicas in realtime ?
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: Test infrastructure: 2 or more servers?
2013-01-15 22:03 ` Xing Lin
@ 2013-01-15 22:26 ` Gandalf Corvotempesta
2013-01-15 22:30 ` Xing Lin
2013-01-15 22:59 ` Xing Lin
0 siblings, 2 replies; 5+ messages in thread
From: Gandalf Corvotempesta @ 2013-01-15 22:26 UTC (permalink / raw)
To: Xing Lin; +Cc: ceph-devel
2013/1/15 Xing Lin <xinglin@cs.utah.edu>:
> You can change the number replicas in runtime with the following command:
>
> $ ceph osd pool set {poolname} size {num-replicas}
So it's absolutely safe to start with just 2 server, make all the
necessary tests and when ready to go in production, increase the
servers and replicas?
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: Test infrastructure: 2 or more servers?
2013-01-15 22:26 ` Gandalf Corvotempesta
@ 2013-01-15 22:30 ` Xing Lin
2013-01-15 22:59 ` Xing Lin
1 sibling, 0 replies; 5+ messages in thread
From: Xing Lin @ 2013-01-15 22:30 UTC (permalink / raw)
To: Gandalf Corvotempesta; +Cc: ceph-devel
It seems to be: Ceph will shuffle data to rebalance in situations such
as when we change the replica num or when some nodes or disks are down.
Xing
On 01/15/2013 03:26 PM, Gandalf Corvotempesta wrote:
> So it's absolutely safe to start with just 2 server, make all the
> necessary tests and when ready to go in production, increase the
> servers and replicas?
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Test infrastructure: 2 or more servers?
2013-01-15 22:26 ` Gandalf Corvotempesta
2013-01-15 22:30 ` Xing Lin
@ 2013-01-15 22:59 ` Xing Lin
1 sibling, 0 replies; 5+ messages in thread
From: Xing Lin @ 2013-01-15 22:59 UTC (permalink / raw)
To: Gandalf Corvotempesta; +Cc: ceph-devel
It seems to be: Ceph will shuffle data to rebalance in situations such
as when we change the replica num or when some nodes or disks are down.
Xing
On 01/15/2013 03:26 PM, Gandalf Corvotempesta wrote:
> 2013/1/15 Xing Lin <xinglin@cs.utah.edu>:
>> You can change the number replicas in runtime with the following command:
>>
>> $ ceph osd pool set {poolname} size {num-replicas}
> So it's absolutely safe to start with just 2 server, make all the
> necessary tests and when ready to go in production, increase the
> servers and replicas?
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-01-15 22:59 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2013-01-15 22:00 Test infrastructure: 2 or more servers? Gandalf Corvotempesta
2013-01-15 22:03 ` Xing Lin
2013-01-15 22:26 ` Gandalf Corvotempesta
2013-01-15 22:30 ` Xing Lin
2013-01-15 22:59 ` Xing Lin
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