== sanity test 248c: verify whole file read behavior ===== 05:23:41 (1788513821)
llite.lustre-ffff999f82ea1800.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff999f82ea1800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 8.20109 seconds
llite.lustre-ffff999f82ea1800.read_ahead_stats=
snapshot_time                       1788513832.379187155 secs.nsecs
start_time                          1788513823.300787220 secs.nsecs
elapsed_time                        9.078399935 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-ffff999f82ea1800.read_ahead_stats=clear
llite.lustre-ffff999f82ea1800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.33333 seconds
llite.lustre-ffff999f82ea1800.read_ahead_stats=
snapshot_time                       1788513842.100443863 secs.nsecs
start_time                          1788513832.408239628 secs.nsecs
elapsed_time                        9.692204235 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-ffff999f82ea1800.max_read_ahead_whole_mb=4