Hi, I have a ceph cluster: 3 (mon+osd) and 2 (mds). When I tried to add the 4th osd to the cluster, osd0 and osd1 crashed. The error logs are attached. My procedure to add the 4th osd is: add [osd3] in the conf file: /etc/ceph/ceph.conf ceph -c /etc/ceph/ceph.conf mon getmap -o /tmp/monmap cosd -c /etc/ceph/ceph.conf -i 3 --mkfs --monmap /tmp/monmap ceph -c /etc/ceph/ceph.conf osd setmaxosd 4 osdmaptool --createsimple 4 --clobber /tmp/osdmap.junk --export-crush /tmp/crush.new ceph -c /etc/ceph.conf osd setcrushmap -i /tmp/crush.new /etc/init.d/ceph -c /etc/ceph/d2c5d946-b888-40b3-aac2-adda05477a81.conf start osd Is my procedure to add an osd incorrect? Thanks, Henry
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osd.0.log
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osd.1.log
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