2 - [mon.a, mgr.x, mds.a, osd.0, osd.1, osd.2, client.0, client.1]
8 - \(CACHE_POOL_NO_HIT_SET\)
11 osd max object name len: 460
12 osd max object namespace len: 64
18 - ceph osd pool create data_cache 4
19 - ceph osd tier add cephfs_data data_cache
20 - ceph osd tier cache-mode data_cache writeback
21 - ceph osd tier set-overlay cephfs_data data_cache
22 - ceph osd pool set data_cache hit_set_type bloom
23 - ceph osd pool set data_cache hit_set_count 8
24 - ceph osd pool set data_cache hit_set_period 3600
25 - ceph osd pool set data_cache min_read_recency_for_promote 0
29 - sudo chmod 777 $TESTDIR/mnt.0/
30 - dd if=/dev/urandom of=$TESTDIR/mnt.0/foo bs=1M count=5
31 - ls -al $TESTDIR/mnt.0/foo
32 - truncate --size 0 $TESTDIR/mnt.0/foo
33 - ls -al $TESTDIR/mnt.0/foo
34 - dd if=/dev/urandom of=$TESTDIR/mnt.0/foo bs=1M count=5
35 - ls -al $TESTDIR/mnt.0/foo
36 - cp $TESTDIR/mnt.0/foo /tmp/foo
38 - rados -p data_cache ls -
40 - rados -p data_cache ls -
41 - rados -p data_cache cache-flush-evict-all
42 - rados -p data_cache ls -
46 - hexdump -C /tmp/foo | head
47 - hexdump -C $TESTDIR/mnt.1/foo | head
48 - cmp $TESTDIR/mnt.1/foo /tmp/foo