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@xxxxxxxxx> 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@xxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxx >> www.PerformAir.com >> >> >> >> -----Original Message----- >> From: Lindsay Mathieson [mailto:lindsay.mathieson@xxxxxxxxx] >> Sent: Friday, June 26, 2020 4:08 AM >> To: Zhenshi Zhou >> Cc: ceph-users >> Subject: 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 :) >> >> -- >> Lindsay >> _______________________________________________ >> ceph-users mailing list -- ceph-users@xxxxxxx >> To unsubscribe send an email to ceph-users-leave@xxxxxxx >> > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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