== sanity test 248c: verify whole file read behavior ===== 02:30:04 (1790922604)
llite.lustre-ffff8fe3c331c800.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff8fe3c331c800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.4135 seconds
llite.lustre-ffff8fe3c331c800.read_ahead_stats=
snapshot_time                       1790922614.443991506 secs.nsecs
start_time                          1790922606.020237765 secs.nsecs
elapsed_time                        8.423753741 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-ffff8fe3c331c800.read_ahead_stats=clear
llite.lustre-ffff8fe3c331c800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 9.28473 seconds
llite.lustre-ffff8fe3c331c800.read_ahead_stats=
snapshot_time                       1790922626.134016944 secs.nsecs
start_time                          1790922614.479475068 secs.nsecs
elapsed_time                        11.654541876 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-ffff8fe3c331c800.max_read_ahead_whole_mb=4