I'm going to try the way Janne said, but what confused me is the expansion of the cluster. Should I change the profile if I add hosts which don't have the same OSDs as these 3 hosts? Zhenshi Zhou <deaderzzs@gmail.com> 于2020年6月28日周日 下午12:53写道：
I have only 3 hosts at present, and I tend to use EC pools because I don't have much budgets. The cluster is used for cold backup and it doesn't need high qos as well.
<DHilsbos@performair.com> 于2020年6月26日周五 下午11:40写道：
As others have pointed out; setting the failure domain to OSD is dangerous because then all 6 chunks for an object can end up on the same host. 6 hosts really seems like the minimum to mess with EC pools.
Adding a bucket type between host and osd seems like a good idea here, if you absolutely must use EC pools.
Perhaps something that corresponds to the HBAs / disk controllers?
Thank you,
Dominic L. Hilsbos, MBA Director - Information Technology Perform Air International, Inc. DHilsbos@PerformAir.com www.PerformAir.com
-----Original Message----- From: Lindsay Mathieson [mailto:lindsay.mathieson@gmail.com] Sent: Friday, June 26, 2020 4:08 AM To: Zhenshi Zhou Cc: ceph-users Subject: [ceph-users] Re: fault tolerant about erasure code pool
On 26/06/2020 8:08 pm, Zhenshi Zhou wrote:
Hi Lindsay,
I have only 3 hosts, and is there any method to set a EC pool cluster in a better way
There's failure domain by OSD, which Janne knows far better than I :)
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