== sanity test 248c: verify whole file read behavior ===== 03:23:40 (1734683020)
llite.lustre-ffff88012b163800.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff88012b163800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 25.5 seconds
llite.lustre-ffff88012b163800.read_ahead_stats=
snapshot_time             1734683024.164980679 secs.nsecs
start_time                1734683021.334785872 secs.nsecs
elapsed_time              2.830194807 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-ffff88012b163800.read_ahead_stats=clear
llite.lustre-ffff88012b163800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 24.6 seconds
llite.lustre-ffff88012b163800.read_ahead_stats=
snapshot_time             1734683027.427090065 secs.nsecs
start_time                1734683024.169658030 secs.nsecs
elapsed_time              3.257432035 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-ffff88012b163800.max_read_ahead_whole_mb=64