== sanity test 248c: verify whole file read behavior ===== 10:36:14 (1784126174)
llite.lustre-ffff9d7049b2b000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9d7049b2b000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 2.81104 seconds
llite.lustre-ffff9d7049b2b000.read_ahead_stats=
snapshot_time                       1784126177.851543090 secs.nsecs
start_time                          1784126174.838617375 secs.nsecs
elapsed_time                        3.012925715 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-ffff9d7049b2b000.read_ahead_stats=clear
llite.lustre-ffff9d7049b2b000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 2.84627 seconds
llite.lustre-ffff9d7049b2b000.read_ahead_stats=
snapshot_time                       1784126181.326495902 secs.nsecs
start_time                          1784126177.856514164 secs.nsecs
elapsed_time                        3.469981738 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-ffff9d7049b2b000.max_read_ahead_whole_mb=4