13 - \(CACHE_POOL_NO_HIT_SET\)
16 osd max object name len: 460
17 osd max object namespace len: 64
20 - ceph osd pool create base-pool 4
21 - ceph osd pool application enable base-pool rados
22 - ceph osd pool create cache-pool 4
23 - ceph osd tier add base-pool cache-pool
24 - ceph osd tier cache-mode cache-pool writeback
25 - ceph osd tier set-overlay base-pool cache-pool
26 - dd if=/dev/urandom of=$TESTDIR/foo bs=1M count=1
27 - rbd import --image-format 2 $TESTDIR/foo base-pool/bar
28 - rbd snap create base-pool/bar@snap
29 - rados -p base-pool cache-flush-evict-all
30 - rbd export base-pool/bar $TESTDIR/bar
31 - rbd export base-pool/bar@snap $TESTDIR/snap
32 - cmp $TESTDIR/foo $TESTDIR/bar
33 - cmp $TESTDIR/foo $TESTDIR/snap
34 - rm $TESTDIR/foo $TESTDIR/bar $TESTDIR/snap