db lsm
----
accepts 1 arg(s), received 0

db lsm
non-existent
----
error opening database at "non-existent": pebble: database "non-existent" does not exist

db lsm
../testdata/db-stage-4
----
__level_____count____size___score______in__ingest(sz_cnt)____move(sz_cnt)___write(sz_cnt)____read___r-amp___w-amp
    WAL         1     0 B       -     0 B       -       -       -       -     0 B       -       -       -     0.0
      0         1   986 B    0.50     0 B     0 B       0     0 B       0     0 B       0     0 B       0     0.0
      1         0     0 B    0.00     0 B     0 B       0     0 B       0     0 B       0     0 B       0     0.0
      2         0     0 B    0.00     0 B     0 B       0     0 B       0     0 B       0     0 B       0     0.0
      3         0     0 B    0.00     0 B     0 B       0     0 B       0     0 B       0     0 B       0     0.0
      4         0     0 B    0.00     0 B     0 B       0     0 B       0     0 B       0     0 B       0     0.0
      5         0     0 B    0.00     0 B     0 B       0     0 B       0     0 B       0     0 B       0     0.0
      6         0     0 B       -     0 B     0 B       0     0 B       0     0 B       0     0 B       0     0.0
  total         1   986 B       -     0 B     0 B       0     0 B       0     0 B       0     0 B       0     0.0
  flush         0                             0 B       0       0  (ingest = tables-ingested, move = ingested-as-flushable)
compact         0     0 B     0 B       0                          (size == estimated-debt, score = in-progress-bytes, in = num-in-progress)
  ctype         0       0       0       0       0       0       0  (default, delete, elision, move, read, rewrite, multi-level)
 memtbl         1   256 K
zmemtbl         0     0 B
   ztbl         0     0 B
 bcache         0     0 B    0.0%  (score == hit-rate)
 tcache         0     0 B    0.0%  (score == hit-rate)
  snaps         0       -       0  (score == earliest seq num)
 titers         0
 filter         -       -    0.0%  (score == utility)
