On 2/1/24 16:43, Miklos Szeredi wrote: > On Thu, 1 Feb 2024 at 16:40, Bernd Schubert <bschubert@xxxxxxx> wrote: > >> Given >> -N numops: total # operations to do (default infinity) >> >> How long do you think I should run it? Maybe something like 3 hours >> (--duration=$(3 * 60 * 60))? > > I used -N1000000. If there were any issues they usually triggered much earlier. Forgot to post, it succeeds both, with and without FOPEN_DIRECT_IO with bernd@squeeze1 ~>/home/fusetests/src/xfstests-dev/ltp/fsx -N1000000 /scratch/dest/testfile Seed set to 1 main: filesystem does not support fallocate mode FALLOC_FL_KEEP_SIZE, disabling! main: filesystem does not support fallocate mode FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE, disabling! main: filesystem does not support fallocate mode FALLOC_FL_ZERO_RANGE, disabling! main: filesystem does not support fallocate mode FALLOC_FL_COLLAPSE_RANGE, disabling! main: filesystem does not support fallocate mode FALLOC_FL_INSERT_RANGE, disabling! main: filesystem does not support clone range, disabling! main: filesystem does not support dedupe range, disabling! main: filesystem does not support exchange range, disabling! truncating to largest ever: 0x3aea7 copying to largest ever: 0x3e19b copying to largest ever: 0x3e343 fallocating to largest ever: 0x40000 skipping zero length fallocate skipping zero size write All 1000000 operations completed A-OK! (I always tested the entire patch series). Thanks, Bernd