Re: [PATCH] fsx: add missing -K in usage() and cleanup

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On Fri, Aug 04, 2023 at 02:17:04PM -0700, Darrick J. Wong wrote:
> On Fri, Aug 04, 2023 at 01:40:03PM +0800, Shiyang Ruan wrote:
> > Signed-off-by: Shiyang Ruan <ruansy.fnst@xxxxxxxxxxx>
> 
> Yes, thank you, this is much more readable.
> 
> Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> 
> --D
> 
> > ---
> >  ltp/fsx.c | 27 +++++++++++++++++----------
> >  1 file changed, 17 insertions(+), 10 deletions(-)
> > 
> > diff --git a/ltp/fsx.c b/ltp/fsx.c
> > index ffa64cfa0..753c472f4 100644
> > --- a/ltp/fsx.c
> > +++ b/ltp/fsx.c
> > @@ -2393,11 +2393,17 @@ void
> >  usage(void)
> >  {
> >  	fprintf(stdout, "usage: %s",
> > -		"fsx [-dknqxBEFJLOWZ][-A|-U] [-b opnum] [-c Prob] [-g filldata] [-i logdev] [-j logid] [-l flen] [-m start:end] [-o oplen] [-p progressinterval] [-r readbdy] [-s style] [-t truncbdy] [-w writebdy] [-D startingop] [-N numops] [-P dirpath] [-S seed] fname\n\
> > +		"fsx [-dfknqxyzBEFHIJKLORWXZ0]\n\
> > +	   [-b opnum] [-c Prob] [-g filldata] [-i logdev] [-j logid]\n\
> > +	   [-l flen] [-m start:end] [-o oplen] [-p progressinterval]\n\
> > +	   [-r readbdy] [-s style] [-t truncbdy] [-w writebdy]\n\
> > +	   [-A|-U] [-D startingop] [-N numops] [-P dirpath] [-S seed]\n\
> > +	   [--replay-ops opsfile] [--record-ops[=opsfile]] [--duration seconds]\n\

"--duration seconds"

> > +	   ... fname\n\
> >  	-b opnum: beginning operation number (default 1)\n\
> >  	-c P: 1 in P chance of file close+open at each op (default infinity)\n\
> >  	-d: debug output for all operations\n\
> > -	-f flush and invalidate cache after I/O\n\
> > +	-f: flush and invalidate cache after I/O\n\
> >  	-g X: write character X instead of random generated data\n\
> >  	-i logdev: do integrity testing, logdev is the dm log writes device\n\
> >  	-j logid: prefix debug log messsages with this id\n\
> > @@ -2412,15 +2418,15 @@ usage(void)
> >  	-s style: 1 gives smaller truncates (default 0)\n\
> >  	-t truncbdy: 4096 would make truncates page aligned (default 1)\n\
> >  	-w writebdy: 4096 would make writes page aligned (default 1)\n\
> > -	-x: preallocate file space before starting, XFS only (default 0)\n\
> > -	-y synchronize changes to a file\n"
> > +	-x: preallocate file space before starting, XFS only\n\
> > +	-y: synchronize changes to a file\n"
> >  
> >  #ifdef AIO
> >  "	-A: Use the AIO system calls, -A excludes -U\n"
> >  #endif
> >  #ifdef URING
> >  "	-U: Use the IO_URING system calls, -U excludes -A\n"
> > - #endif
> > +#endif
> >  "	-D startingop: debug output starting at specified operation\n"
> >  #ifdef HAVE_LINUX_FALLOC_H
> >  "	-F: Do not use fallocate (preallocation) calls\n"
> > @@ -2449,18 +2455,19 @@ usage(void)
> >  #ifdef FIEXCHANGE_RANGE
> >  "	-0: Do not use exchange range calls\n"
> >  #endif
> > -"	-L: fsxLite - no file creations & no file size changes\n\
> > +"	-K: Do not use keep size\n\
> > +	-L: fsxLite - no file creations & no file size changes\n\
> >  	-N numops: total # operations to do (default infinity)\n\
> >  	-O: use oplen (see -o flag) for every op (default random)\n\
> > -	-P: save .fsxlog .fsxops and .fsxgood files in dirpath (default ./)\n\
> > +	-P dirpath: save .fsxlog .fsxops and .fsxgood files in dirpath (default ./)\n\
> >  	-S seed: for random # generator (default 1) 0 gets timestamp\n\
> >  	-W: mapped write operations DISabled\n\
> >  	-X: Read file and compare to good buffer after every operation.\n\
> > -        -R: read() system calls only (mapped reads disabled)\n\
> > -        -Z: O_DIRECT (use -R, -W, -r and -w too)\n\
> > +	-R: read() system calls only (mapped reads disabled)\n\
> > +	-Z: O_DIRECT (use -R, -W, -r and -w too)\n\
> >  	--replay-ops opsfile: replay ops from recorded .fsxops file\n\
> >  	--record-ops[=opsfile]: dump ops file also on success. optionally specify ops file name\n\
> > -	--duration=seconds: ignore any -N setting and run for this many seconds\n\
> > +	--duration seconds: ignore any -N setting and run for this many seconds\n\

I'm wondering does "--duration" need the "=" or not, or either?

Looks like fsstress.c and fsx.c recommend using "--duration=xxx":
fsstress.c:
                case 256:  /* --duration */
                        if (!optarg) {
                                fprintf(stderr, "Specify time with --duration=\n");

fsx.c:
                case 254:  /* --duration */
                        if (!optarg) {
                                fprintf(stderr, "Specify time with --duration=\n");


And each case contains "--duration" tends to use the "=" too:

  $ grep -rsn -- "--duration" tests/
  tests/generic/642:52:test -n "$DURATION" && args+=(--duration="$DURATION")
  tests/generic/521:38:test -n "$SOAK_DURATION" && fsx_args+=(--duration="$SOAK_DURATION")
  tests/generic/476:37:test -n "$SOAK_DURATION" && fsstress_args+=(--duration="$SOAK_DURATION")
  tests/generic/522:32:test -n "$SOAK_DURATION" && fsx_args+=(--duration="$SOAK_DURATION")


As this patch hopes to tidy the fsx options, maybe we can clear that, better to
have a  consistent usage?

Thanks,
Zorro

> >  	fname: this filename is REQUIRED (no default)\n");
> >  	exit(90);
> >  }
> > -- 
> > 2.41.0
> > 
> 




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