== sanity test 248c: verify whole file read behavior ===== 18:13:05 (1748470385)
llite.lustre-ffff8800b58ce000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff8800b58ce000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 32.4 seconds
llite.lustre-ffff8800b58ce000.read_ahead_stats=
snapshot_time             1748470388.596568127 secs.nsecs
start_time                1748470386.368163803 secs.nsecs
elapsed_time              2.228404324 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-ffff8800b58ce000.read_ahead_stats=clear
llite.lustre-ffff8800b58ce000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 33.7 seconds
llite.lustre-ffff8800b58ce000.read_ahead_stats=
snapshot_time             1748470390.997147087 secs.nsecs
start_time                1748470388.600720192 secs.nsecs
elapsed_time              2.396426895 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-ffff8800b58ce000.max_read_ahead_whole_mb=4