== sanity test 248c: verify whole file read behavior ===== 15:28:08 (1744054088)
llite.lustre-ffff8801373a0000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff8801373a0000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 37.6 seconds
llite.lustre-ffff8801373a0000.read_ahead_stats=
snapshot_time             1744054090.668299482 secs.nsecs
start_time                1744054088.669344363 secs.nsecs
elapsed_time              1.998955119 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-ffff8801373a0000.read_ahead_stats=clear
llite.lustre-ffff8801373a0000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 35.4 seconds
llite.lustre-ffff8801373a0000.read_ahead_stats=
snapshot_time             1744054092.973513705 secs.nsecs
start_time                1744054090.673510532 secs.nsecs
elapsed_time              2.300003173 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-ffff8801373a0000.max_read_ahead_whole_mb=4