== sanity test 248c: verify whole file read behavior ===== 19:29:17 (1788564557)
llite.lustre-ffff8fc4a0714000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8fc4a0714000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.65058 seconds
llite.lustre-ffff8fc4a0714000.read_ahead_stats=
snapshot_time                       1788564568.930007402 secs.nsecs
start_time                          1788564560.651246185 secs.nsecs
elapsed_time                        8.278761217 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-ffff8fc4a0714000.read_ahead_stats=clear
llite.lustre-ffff8fc4a0714000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 10.0856 seconds
llite.lustre-ffff8fc4a0714000.read_ahead_stats=
snapshot_time                       1788564581.790509004 secs.nsecs
start_time                          1788564568.971731248 secs.nsecs
elapsed_time                        12.818777756 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-ffff8fc4a0714000.max_read_ahead_whole_mb=4