== sanity test 248c: verify whole file read behavior ===== 03:13:08 (1790925188)
llite.lustre-ffff8b1689c50800.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff8b1689c50800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.10471 seconds
llite.lustre-ffff8b1689c50800.read_ahead_stats=
snapshot_time                       1790925198.491903082 secs.nsecs
start_time                          1790925190.722131913 secs.nsecs
elapsed_time                        7.769771169 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-ffff8b1689c50800.read_ahead_stats=clear
llite.lustre-ffff8b1689c50800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.03022 seconds
llite.lustre-ffff8b1689c50800.read_ahead_stats=
snapshot_time                       1790925207.284496331 secs.nsecs
start_time                          1790925198.541686243 secs.nsecs
elapsed_time                        8.742810088 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-ffff8b1689c50800.max_read_ahead_whole_mb=4