== sanity test 248c: verify whole file read behavior ===== 14:26:07 (1767036367)
llite.lustre-ffff9c36739d3800.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff9c36739d3800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 4.08487 seconds
llite.lustre-ffff9c36739d3800.read_ahead_stats=
snapshot_time             1767036372.727757876 secs.nsecs
start_time                1767036368.457744101 secs.nsecs
elapsed_time              4.270013775 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-ffff9c36739d3800.read_ahead_stats=clear
llite.lustre-ffff9c36739d3800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 4.0991 seconds
llite.lustre-ffff9c36739d3800.read_ahead_stats=
snapshot_time             1767036377.821652109 secs.nsecs
start_time                1767036372.735270640 secs.nsecs
elapsed_time              5.086381469 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-ffff9c36739d3800.max_read_ahead_whole_mb=4