== sanity test 248c: verify whole file read behavior ===== 21:10:51 (1786410651)
llite.lustre-ffff93c3c6874000.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff93c3c6874000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.7785 seconds
llite.lustre-ffff93c3c6874000.read_ahead_stats=
snapshot_time                       1786410660.896443729 secs.nsecs
start_time                          1786410653.536802314 secs.nsecs
elapsed_time                        7.359641415 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-ffff93c3c6874000.read_ahead_stats=clear
llite.lustre-ffff93c3c6874000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.61639 seconds
llite.lustre-ffff93c3c6874000.read_ahead_stats=
snapshot_time                       1786410670.638966796 secs.nsecs
start_time                          1786410660.939721953 secs.nsecs
elapsed_time                        9.699244843 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-ffff93c3c6874000.max_read_ahead_whole_mb=4