Well, as the doc said: > Set or clear the pause flags in the OSD map. If set, no IO requests will be sent to any OSD. Clearing the flags via unpause results in resending pending requests. If you do that on a production cluster, that means your cluster will no longer be in production :) Depending on your needs, but .. Maybe you want do this operation as fast as possible Or maybe you want to make that operation as transparent as possible, from a user point of view You may have a look at osd_recovery_op_priority & osd_client_op_priority, they might be interesting for you On 02/01/2017 14:37, Matteo Dacrema wrote: > Hi All, > > what happen if I set pause flag on a production cluster? > I mean, will all the request remain pending/waiting or all the volumes attached to the VMs will become read-only? > > I need to quickly upgrade placement group number from 3072 to 8192 or better to 165336 and I think doing it without client operations will be much faster. > > Thanks > Regards > Matteo > > > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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