Questions[ceph](ubuntu)

I have a 2 OSDs ceph cluster. The initial size of backing volumes was 16GB. Then I shutdown OSDs, did a lvextend on both, and turn OSDs on again. Now ceph osd df shows:

But ceph -s show it's stucked at active+remapped+backfill_toofull for 50 pgs:

I tried to understand the mechanism by reading CRUSH algorithm but seems a lot of effort and knowledge is required. It would be very appreciated if anyone could describe the behaviour (why stuck in toofull despite the free space is increased significantly.) and help me to resolve this state.

As the title says I'm having problems deploying Ceph to any of my clients. The Error message is as follows.... Ceph error

I am trying to set up Ceph on my Ubuntu server for my Dissertation work.

I'm trying to set things up so that the Ceph user can access all the Ceph nodes without needing a password, however my original user doesn't seem to have authorization to run this change... the first line works

$ echo "ceph-system ALL = (root) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/ceph-system

the second line seems to indicate that I don't have access to the sudoers file.

chmod 0440 /etc/sudoers.d/ceph-system

I am facing the following errors:

[ceph_deploy.mon][ERROR ] RuntimeError: config file /etc/ceph/ceph.conf exists with different content; use --overwrite-conf to overwrite
[ceph_deploy][ERROR ] GenericError: Failed to create 1 monitors

I want to experiment with Ceph, and it needs extended attributes enabled. How do I mount my filesystem with this support?