== sanity test 248c: verify whole file read behavior ===== 07:30:42 (1744543842)
llite.lustre-ffff8800b65e5000.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff8800b65e5000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 35.5 seconds
llite.lustre-ffff8800b65e5000.read_ahead_stats=
snapshot_time             1744543845.323796903 secs.nsecs
start_time                1744543843.306249025 secs.nsecs
elapsed_time              2.017547878 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-ffff8800b65e5000.read_ahead_stats=clear
llite.lustre-ffff8800b65e5000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 36.1 seconds
llite.lustre-ffff8800b65e5000.read_ahead_stats=
snapshot_time             1744543847.593014346 secs.nsecs
start_time                1744543845.328693223 secs.nsecs
elapsed_time              2.264321123 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-ffff8800b65e5000.max_read_ahead_whole_mb=4