== sanity test 248c: verify whole file read behavior ===== 18:39:53 (1746139193)
llite.lustre-ffff88012a4fc000.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff88012a4fc000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 22.2 seconds
llite.lustre-ffff88012a4fc000.read_ahead_stats=
snapshot_time             1746139197.791682821 secs.nsecs
start_time                1746139194.546618666 secs.nsecs
elapsed_time              3.245064155 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-ffff88012a4fc000.read_ahead_stats=clear
llite.lustre-ffff88012a4fc000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 22.8 seconds
llite.lustre-ffff88012a4fc000.read_ahead_stats=
snapshot_time             1746139201.350836426 secs.nsecs
start_time                1746139197.804732777 secs.nsecs
elapsed_time              3.546103649 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-ffff88012a4fc000.max_read_ahead_whole_mb=4