== sanity test 248c: verify whole file read behavior ===== 04:42:51 (1787388171)
llite.lustre-ffff892610f86000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff892610f86000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.5446 seconds
llite.lustre-ffff892610f86000.read_ahead_stats=
snapshot_time                       1787388180.867202355 secs.nsecs
start_time                          1787388173.685576726 secs.nsecs
elapsed_time                        7.181625629 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-ffff892610f86000.read_ahead_stats=clear
llite.lustre-ffff892610f86000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.53375 seconds
llite.lustre-ffff892610f86000.read_ahead_stats=
snapshot_time                       1787388189.291756421 secs.nsecs
start_time                          1787388180.883813504 secs.nsecs
elapsed_time                        8.407942917 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-ffff892610f86000.max_read_ahead_whole_mb=4