== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:03:38 (1787839418)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.5122 s, 9.1 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-ffff9ec5c51c6000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.326308
Iter 1/10: OSS cache speed: 0.36004
Iter 1/10: ladvise speed: 0.281102
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.369552
Iter 2/10: OSS cache speed: 0.281895
Iter 2/10: ladvise speed: 0.360129
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.327856
Iter 3/10: OSS cache speed: 0.348987
Iter 3/10: ladvise speed: 0.368048
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.379819
Iter 4/10: OSS cache speed: 0.339861
Iter 4/10: ladvise speed: 0.314922
Iter 5/10: reading without willread hint