== sanity test 248c: verify whole file read behavior ===== 05:34:20 (1786181660)
llite.lustre-ffff8ad8916c5000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8ad8916c5000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.3194 seconds
llite.lustre-ffff8ad8916c5000.read_ahead_stats=
snapshot_time                       1786181670.372454184 secs.nsecs
start_time                          1786181662.278369494 secs.nsecs
elapsed_time                        8.094084690 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-ffff8ad8916c5000.read_ahead_stats=clear
llite.lustre-ffff8ad8916c5000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 8.23662 seconds
llite.lustre-ffff8ad8916c5000.read_ahead_stats=
snapshot_time                       1786181681.249531461 secs.nsecs
start_time                          1786181670.413161201 secs.nsecs
elapsed_time                        10.836370260 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-ffff8ad8916c5000.max_read_ahead_whole_mb=4