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39 requires nbdsh
--base-allocation
41 files
="retry-extents-count retry-extents-open-count"
43 cleanup_fn
rm -f $files
45 touch retry-extents-count retry-extents-open-count
48 # Create a custom plugin which will test retrying.
51 --filter=retry retry-delay
=1 \
52 --run 'nbdsh --base-allocation --uri "$uri" -c "
54 def f(metacontext, offset, e, err):
57 assert metacontext == nbd.CONTEXT_BASE_ALLOCATION
59 h.block_status(1024, 0, f)
60 assert entries == [ 512, 0,
66 # Count how many times the connection is (re-)opened.
67 read i < retry-extents-open-count
68 echo $((i+1)) > retry-extents-open-count
71 # Fail in three different ways then succeed.
72 read i < retry-extents-count
74 echo $i > retry-extents-count
76 1) echo "EIO pread failed" >&2; exit 1;;
88 can_extents) exit 0 ;;
89 get_size) echo 1024 ;;
94 # In this test we should see 3 failures:
96 # retry and wait 1 seconds
98 # retry and wait 2 seconds
100 # retry and wait 4 seconds
103 # The minimum time for the test should be 1+2+4 = 7 seconds.
105 if [ $
((end_t
- start_t
)) -lt 7 ]; then
106 echo "$0: test ran too quickly"
110 # Check the handle was opened 4 times (first open + one reopen for
112 read open_count
< retry-extents-open-count
113 if [ $open_count -ne 4 ]; then
114 echo "$0: open-count ($open_count) != 4"