== sanity test 248c: verify whole file read behavior ===== 22:26:19 (1746152779)
llite.lustre-ffff88012b0ce000.read_ahead_stats=c
striped dir -i0 -c2 -H all_char /mnt/lustre/d248c.sanity
llite.lustre-ffff88012b0ce000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 14.1 seconds
llite.lustre-ffff88012b0ce000.read_ahead_stats=
snapshot_time             1746152785.409426470 secs.nsecs
start_time                1746152780.284299218 secs.nsecs
elapsed_time              5.125127252 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-ffff88012b0ce000.read_ahead_stats=clear
llite.lustre-ffff88012b0ce000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 11.8 seconds
llite.lustre-ffff88012b0ce000.read_ahead_stats=
snapshot_time             1746152792.302239895 secs.nsecs
start_time                1746152785.420547013 secs.nsecs
elapsed_time              6.881692882 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-ffff88012b0ce000.max_read_ahead_whole_mb=4