I am testing ceph Luminous, the environment is
- centos 7.4
- ceph luminous ( ceph offical repo)
- ceph-deploy 2.0
- bluestore + separate wal and db
I found the ceph osd folder `/var/lib/ceph/osd/ceph-0` is mounted
from tmpfs. But where the files in that folder come from? like `keyring`,
`whoami`?
$ ls -alh /var/lib/ceph/osd/ceph-0/
lrwxrwxrwx. 1 ceph ceph 24 Apr 3 16:49 block -> /dev/ceph-pool/osd0.data
lrwxrwxrwx. 1 root root 22 Apr 3 16:49 block.db -> /dev/ceph-pool/osd0-db
lrwxrwxrwx. 1 root root 23 Apr 3 16:49 block.wal -> /dev/ceph-pool/osd0-wal
-rw-------. 1 ceph ceph 37 Apr 3 16:49 ceph_fsid
-rw-------. 1 ceph ceph 37 Apr 3 16:49 fsid
-rw-------. 1 ceph ceph 55 Apr 3 16:49 keyring
-rw-------. 1 ceph ceph 6 Apr 3 16:49 ready
-rw-------. 1 ceph ceph 10 Apr 3 16:49 type
-rw-------. 1 ceph ceph 2 Apr 3 16:49 whoami
I guess they may be loaded from bluestore. But I can not find any clue for this.
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