== sanity test 255a: check 'lfs ladvise -a willread' ===== 07:44:41 (1788867881)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 14.8113 s, 7.1 MB/s
ladvise: range [2, 1] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: range [2, 2] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: conflicting arguments of -l and -e
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

Synchronous ladvise should wait
fail_val=8
fail_loc=0x237
Asynchronous ladvise shouldn't wait
llite.lustre-ffff8b90c6eba000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.35651
Iter 1/10: OSS cache speed: 0.393063
Iter 1/10: ladvise speed: 0.409202
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.326974
Iter 2/10: OSS cache speed: 0.357543
Iter 2/10: ladvise speed: 0.394463
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.3626
Iter 3/10: OSS cache speed: 0.344344
Iter 3/10: ladvise speed: 0.398211
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.345731
Iter 4/10: OSS cache speed: 0.360249
Iter 4/10: ladvise speed: 0.380211
Iter 5/10: reading without willread hint