If I were to upgrade a host with 18+ 12TB+ OSDs, I would need to disable the automatic conversion and do them a few at a time? On Wed, Apr 1, 2020 at 11:28 AM Jack <ceph@xxxxxxxxxxxxxx> wrote: > > Hi, > > As the upgrade documentation tells: > > Note that the first time each OSD starts, it will do a format > > conversion to improve the accounting for “omap” data. This may > > take a few minutes to as much as a few hours (for an HDD with lots > > of omap data). You can disable this automatic conversion with: > > What the documentation does not say is that this process takes a lot of > memory > > I am upgrading a rusty cluster from Nautilus, you can check out the ram > consumption as attachment > > First, we have a 3TB osd conversion: it tooks ~15min, and 19GB of memory > > Then, we have a larger 6TB osd conversion: it tooks more than 2 hours, > and 35GB of memory > > Finally, you have the largest 10TB osd: only 1H15, but 52GB of memory > > > _______________________________________________ > 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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