Thanks for the suggestion, however... As noted above: the previous invocations of ceph osd pool create have exactly the same structure (and succeeded) as the one which fails. I used the long form because trying to use the short form (ceph osd pool create ec2pool 2048 2048 erasure glasgow-eci-test, for example) produced other "fatal" errors [complaining about my not specifying the final numeric positional parameter, even though it's optional]. Weirdly, though, you're right: going back to the short form suddenly works again... so I'd like to revise my question to: "why is the behaviour (and requirements) of ceph osd pool create inconsistent - sometimes failing if you don't specify all the parameters, even optional ones, and sometimes failing if you do, despite the 'rules' you're following being the same?" _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx