== sanity test 248c: verify whole file read behavior ===== 12:35:15 (1788626115)
llite.lustre-ffff8c840a6a2000.read_ahead_stats=c
striped dir -i0 -c2 -H crush  /mnt/lustre/d248c.sanity
llite.lustre-ffff8c840a6a2000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 6.64589 seconds
llite.lustre-ffff8c840a6a2000.read_ahead_stats=
snapshot_time                       1788626124.712876425 secs.nsecs
start_time                          1788626117.431401490 secs.nsecs
elapsed_time                        7.281474935 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-ffff8c840a6a2000.read_ahead_stats=clear
llite.lustre-ffff8c840a6a2000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 7.19379 seconds
llite.lustre-ffff8c840a6a2000.read_ahead_stats=
snapshot_time                       1788626133.945786591 secs.nsecs
start_time                          1788626124.751829476 secs.nsecs
elapsed_time                        9.193957115 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-ffff8c840a6a2000.max_read_ahead_whole_mb=4