== sanity test 248c: verify whole file read behavior ===== 13:04:54 (1784048694)
llite.lustre-ffff9b8f487e6000.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff9b8f487e6000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.33342 seconds
llite.lustre-ffff9b8f487e6000.read_ahead_stats=
snapshot_time                       1784048705.017737948 secs.nsecs
start_time                          1784048697.016299352 secs.nsecs
elapsed_time                        8.001438596 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-ffff9b8f487e6000.read_ahead_stats=clear
llite.lustre-ffff9b8f487e6000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.26166 seconds
llite.lustre-ffff9b8f487e6000.read_ahead_stats=
snapshot_time                       1784048714.658625851 secs.nsecs
start_time                          1784048705.044655343 secs.nsecs
elapsed_time                        9.613970508 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-ffff9b8f487e6000.max_read_ahead_whole_mb=4