I believe they are working on it or want to work on it to revert from a stretched cluster, because of the reason you mention: if the other datacenter is totally burned down, you maybe want for the time being switch to one datacenter setup. Best regards, Sake > Op 09-11-2023 11:18 CET schreef Eugen Block <eblock@xxxxxx>: > > > Hi, > > I'd like to ask for confirmation how I understand the docs on stretch > mode [1]. It requires exact size 4 for the rule? Other sizes are not > supported/won't work, for example size 6? Are there clusters out there > which use this stretch mode? > Once stretch mode is enabled, it's not possible to get out of it. How > would one deal with a burnt down datacenter which can take months to > rebuild? In a "self-managed" stretch cluster (let's say size 6) I > could simply change the crush rule to not consider the failed > datacenter anymore, deploy an additional mon somewhere and maybe > reduce the size/min_size. Am I missing something? > > Thanks, > Eugen > > [1] https://docs.ceph.com/en/reef/rados/operations/stretch-mode/#id2 > > _______________________________________________ > 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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