== sanity test 248c: verify whole file read behavior ===== 14:12:02 (1780337522)
llite.lustre-ffff92f1400b6800.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff92f1400b6800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 5.9093 seconds
llite.lustre-ffff92f1400b6800.read_ahead_stats=
snapshot_time             1780337531.509584910 secs.nsecs
start_time                1780337524.771320628 secs.nsecs
elapsed_time              6.738264282 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-ffff92f1400b6800.read_ahead_stats=clear
llite.lustre-ffff92f1400b6800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.9235 seconds
llite.lustre-ffff92f1400b6800.read_ahead_stats=
snapshot_time             1780337540.347053886 secs.nsecs
start_time                1780337531.524429418 secs.nsecs
elapsed_time              8.822624468 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-ffff92f1400b6800.max_read_ahead_whole_mb=4