Hi Gaël,
I'm actually embarking on a similar project to migrate EC pool from
k=2,m=1 to k=4,m=2 using rgw multi site sync.
I just thought I'd check before you do a lot of work for nothing that
when you say failure domain that's the crush failure domain you mean,
not k and m? If it is failure domain you mean I wonder if you realise
that you can change the crush rule on an EC pool?
You can change the rule the same as other pool types like this:
sudo ceph osd pool set {pool_name} crush_rule {rule_name}
At least that is my understanding and I have done so on a couple of my
pools (changed from Host to Chassis failure domain).
I found it a bit confusing in the docs because you can't change the EC
profile of a pool due to k and m numbers and the crush rule is defined
in the profile as well, but you can change that outside of the
profile.Regards, Rich On Mon, 24 Apr 2023 at 20:55, Gaël THEROND <gael.ther...@bitswalk.com> wrote: > > Hi casey, > > I’ve tested that while you answered me actually :-) > > So, all in all, we can’t stop the radosgw for now and tier cache option > can’t work as we use EC based pools (at least for nautilus). > > Due to those constraints we’re currently thinking of the following > procedure: > > 1°/- Create the new EC Profile. > 2°/- Create the new EC based pool and assign it the new profile. > 3°/- Create a new storage class that use this new pool. > 4°/- Add this storage class to the default placement policy. > 5°/- Force a bucket lifecycle objects migration (possible??). > > It seems at least one user attempted to do just that in here: > > https://lists.ceph.io/hyperkitty/list/ceph-users@ceph.io/thread/RND652IBFIG6ESSQXVGNX7NAGCNEVYOU > > The only part of that thread that I don’t get is the: > > « I think actually moving an already-stored object requires a lifecycle > transition policy… » part of the Matt Benjamin answer. > > What kind of policy should I write to do that ?? > > Is this procedure something that looks ok to you? > > Kind regards! > > Le mer. 19 avr. 2023 à 14:49, Casey Bodley <cbod...@redhat.com> a écrit : > > > On Wed, Apr 19, 2023 at 5:13 AM Gaël THEROND <gael.ther...@bitswalk.com> > > wrote: > > > > > > Hi everyone, quick question regarding radosgw zone data-pool. > > > > > > I’m currently planning to migrate an old data-pool that was created with > > > inappropriate failure-domain to a newly created pool with appropriate > > > failure-domain. > > > > > > If I’m doing something like: > > > radosgw-admin zone modify —rgw-zone default —data-pool <new_pool> > > > > > > Will data from the old pool be migrated to the new one or do I need to do > > > something else to migrate those data out of the old pool? > > > > radosgw won't migrate anything. you'll need to use rados tools to do > > that first. make sure you stop all radosgws in the meantime so it > > doesn't write more objects to the old data pool > > > > > I’ve read a lot > > > of mail archive with peoples willing to do that but I can’t get a clear > > > answer from those archives. > > > > > > I’m running on nautilus release of it ever help. > > > > > > Thanks a lot! > > > > > > PS: This mail is a redo of the old one as I’m not sure the former one > > > worked (missing tags). > > > _______________________________________________ > > > ceph-users mailing list -- ceph-users@ceph.io > > > To unsubscribe send an email to ceph-users-le...@ceph.io > > > > > _______________________________________________ > ceph-users mailing list -- ceph-users@ceph.io > To unsubscribe send an email to ceph-users-le...@ceph.io _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
