== sanity test 248c: verify whole file read behavior ===== 20:15:57 (1788740157)
llite.lustre-ffff8e20caa17000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8e20caa17000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 4.60095 seconds
llite.lustre-ffff8e20caa17000.read_ahead_stats=
snapshot_time                       1788740164.283158986 secs.nsecs
start_time                          1788740159.214982909 secs.nsecs
elapsed_time                        5.068176077 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-ffff8e20caa17000.read_ahead_stats=clear
llite.lustre-ffff8e20caa17000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 5.76689 seconds
llite.lustre-ffff8e20caa17000.read_ahead_stats=
snapshot_time                       1788740171.517701398 secs.nsecs
start_time                          1788740164.299060094 secs.nsecs
elapsed_time                        7.218641304 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-ffff8e20caa17000.max_read_ahead_whole_mb=4