== sanity test 248c: verify whole file read behavior ===== 06:10:51 (1788516651)
llite.lustre-ffff97d5d80eb000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff97d5d80eb000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.51107 seconds
llite.lustre-ffff97d5d80eb000.read_ahead_stats=
snapshot_time                       1788516662.379399416 secs.nsecs
start_time                          1788516653.963925942 secs.nsecs
elapsed_time                        8.415473474 secs.nsecs
hits                                16382 samples [pages]
misses                              2 samples [pages]
zero_size_window                    1 samples [pages]
failed_to_fast_read                 3 samples [pages]
readahead_pages                     1 samples [pages] 16382 16382 16382
llite.lustre-ffff97d5d80eb000.read_ahead_stats=clear
llite.lustre-ffff97d5d80eb000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.56536 seconds
llite.lustre-ffff97d5d80eb000.read_ahead_stats=
snapshot_time                       1788516672.095051668 secs.nsecs
start_time                          1788516662.415967539 secs.nsecs
elapsed_time                        9.679084129 secs.nsecs
hits                                16382 samples [pages]
misses                              2 samples [pages]
zero_size_window                    1 samples [pages]
failed_to_fast_read                 3 samples [pages]
readahead_pages                     1 samples [pages] 16382 16382 16382
Test passed on attempt 0
llite.lustre-ffff97d5d80eb000.max_read_ahead_whole_mb=4