== sanity test 248c: verify whole file read behavior ===== 11:18:02 (1772468282)
llite.lustre-ffff934d195d3000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff934d195d3000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 4.10864 seconds
llite.lustre-ffff934d195d3000.read_ahead_stats=
snapshot_time             1772468287.606532489 secs.nsecs
start_time                1772468283.251951781 secs.nsecs
elapsed_time              4.354580708 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-ffff934d195d3000.read_ahead_stats=clear
llite.lustre-ffff934d195d3000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.87419 seconds
llite.lustre-ffff934d195d3000.read_ahead_stats=
snapshot_time             1772468292.191043814 secs.nsecs
start_time                1772468287.614531328 secs.nsecs
elapsed_time              4.576512486 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-ffff934d195d3000.max_read_ahead_whole_mb=4