diff mbox

[01/22] mkfs: remove intermediate getstr followed by getnum

Message ID 20170315160017.27805-2-jtulak@redhat.com (mailing list archive)
State Superseded
Headers show

Commit Message

Jan Tulak March 15, 2017, 3:59 p.m. UTC
Some options loaded a number as a string with getstr and converted it to
number with getnum later in the code, without any reason for this approach.
(They were probably forgotten in some past cleaning.)

This patch changes them to skip the string and use getnum directly in the main
option-parsing loop, as do all the other numerical options.

And as we now have two variables of the same type for the same value,
merge them together. (e.g. former string dsize and number dbytes).

Signed-off-by: Jan Tulak <jtulak@redhat.com>
---
 mkfs/xfs_mkfs.c | 88 +++++++++++++++++++++++++--------------------------------
 1 file changed, 38 insertions(+), 50 deletions(-)

Comments

Eric Sandeen March 16, 2017, 10:59 p.m. UTC | #1
On 3/15/17 8:59 AM, Jan Tulak wrote:
> Some options loaded a number as a string with getstr and converted it to
> number with getnum later in the code, without any reason for this approach.
> (They were probably forgotten in some past cleaning.)
> 
> This patch changes them to skip the string and use getnum directly in the main
> option-parsing loop, as do all the other numerical options.
> 
> And as we now have two variables of the same type for the same value,
> merge them together. (e.g. former string dsize and number dbytes).

The only downside I see to this is that we used to echo back the same
form that was specified, i.e. -

# mkfs.xfs -f -d size=4e fsfile
size 4e specified for data subvolume is too large, maximum is 262144 blocks
# mkfs.xfs -f -d size=4611686018427387904 fsfile
size 4611686018427387904 specified for data subvolume is too large, maximum is 262144 blocks
# mkfs.xfs -f -d size=1125899906842624b fsfile
size 1125899906842624b specified for data subvolume is too large, maximum is 262144 blocks

now we always get back the raw byte value:

# mkfs/mkfs.xfs -f -d size=4e fsfile
size 4611686018427387904 specified for data subvolume is too large, maximum is 262144 blocks

Anything that fails the getnum() checks echo back the original
form on the cmdline; this case is different because getnum() passes,
but by the time we do value checking all we have is the bytes.  Is
that intentional/desirable?

So it's a change, not necessarily incorrect or unacceptable, but
I wanted to highlight it and check.  It wouldn't be too hard to
convert it right away, but keep the string around for error printing
purposes, I suppose.

-Eric

> Signed-off-by: Jan Tulak <jtulak@redhat.com>
> ---
>  mkfs/xfs_mkfs.c | 88 +++++++++++++++++++++++++--------------------------------
>  1 file changed, 38 insertions(+), 50 deletions(-)
> 
> diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
> index affa4052..b3bc218a 100644
> --- a/mkfs/xfs_mkfs.c
> +++ b/mkfs/xfs_mkfs.c
> @@ -1417,7 +1417,7 @@ main(
>  	char			*dfile;
>  	int			dirblocklog;
>  	int			dirblocksize;
> -	char			*dsize;
> +	__uint64_t 		dbytes;
>  	int			dsu;
>  	int			dsw;
>  	int			dsunit;
> @@ -1441,7 +1441,7 @@ main(
>  	xfs_rfsblock_t		logblocks;
>  	char			*logfile;
>  	int			loginternal;
> -	char			*logsize;
> +	__uint64_t 		logbytes;
>  	xfs_fsblock_t		logstart;
>  	int			lvflag;
>  	int			lsflag;
> @@ -1470,11 +1470,11 @@ main(
>  	char			*protostring;
>  	int			qflag;
>  	xfs_rfsblock_t		rtblocks;
> +	__uint64_t 		rtbytes;
>  	xfs_extlen_t		rtextblocks;
>  	xfs_rtblock_t		rtextents;
> -	char			*rtextsize;
> +	__uint64_t 		rtextbytes;
>  	char			*rtfile;
> -	char			*rtsize;
>  	xfs_sb_t		*sbp;
>  	int			sectorlog;
>  	__uint64_t		sector_mask;
> @@ -1522,7 +1522,8 @@ main(
>  	qflag = 0;
>  	imaxpct = inodelog = inopblock = isize = 0;
>  	dfile = logfile = rtfile = NULL;
> -	dsize = logsize = rtsize = rtextsize = protofile = NULL;
> +	protofile = NULL;
> +	rtbytes = rtextbytes = logbytes = dbytes = 0;
>  	dsu = dsw = dsunit = dswidth = lalign = lsu = lsunit = 0;
>  	nodsflag = norsflag = 0;
>  	force_overwrite = 0;
> @@ -1586,7 +1587,7 @@ main(
>  					xi.dname = getstr(value, &dopts, D_NAME);
>  					break;
>  				case D_SIZE:
> -					dsize = getstr(value, &dopts, D_SIZE);
> +					dbytes = getnum(value, &dopts, D_SIZE);
>  					break;
>  				case D_SUNIT:
>  					dsunit = getnum(value, &dopts, D_SUNIT);
> @@ -1731,7 +1732,7 @@ main(
>  					lvflag = 1;
>  					break;
>  				case L_SIZE:
> -					logsize = getstr(value, &lopts, L_SIZE);
> +					logbytes = getnum(value, &lopts, L_SIZE);
>  					break;
>  				case L_SECTLOG:
>  					lsectorlog = getnum(value, &lopts,
> @@ -1860,8 +1861,7 @@ main(
>  
>  				switch (getsubopt(&p, subopts, &value)) {
>  				case R_EXTSIZE:
> -					rtextsize = getstr(value, &ropts,
> -							   R_EXTSIZE);
> +					rtextbytes = getnum(value, &ropts, R_EXTSIZE);
>  					break;
>  				case R_FILE:
>  					xi.risfile = getnum(value, &ropts,
> @@ -1873,7 +1873,7 @@ main(
>  							   R_NAME);
>  					break;
>  				case R_SIZE:
> -					rtsize = getstr(value, &ropts, R_SIZE);
> +					rtbytes = getnum(value, &ropts, R_SIZE);
>  					break;
>  				case R_NOALIGN:
>  					norsflag = getnum(value, &ropts,
> @@ -1976,14 +1976,14 @@ _("Minimum block size for CRC enabled filesystems is %d bytes.\n"),
>  	 * sector size mismatches between the new filesystem and the underlying
>  	 * host filesystem.
>  	 */
> -	check_device_type(dfile, &xi.disfile, !dsize, !dfile,
> +	check_device_type(dfile, &xi.disfile, !dbytes, !dfile,
>  			  Nflag ? NULL : &xi.dcreat, force_overwrite, "d");
>  	if (!loginternal)
> -		check_device_type(xi.logname, &xi.lisfile, !logsize, !xi.logname,
> +		check_device_type(xi.logname, &xi.lisfile, !logbytes, !xi.logname,
>  				  Nflag ? NULL : &xi.lcreat,
>  				  force_overwrite, "l");
>  	if (xi.rtname)
> -		check_device_type(xi.rtname, &xi.risfile, !rtsize, !xi.rtname,
> +		check_device_type(xi.rtname, &xi.risfile, !rtbytes, !xi.rtname,
>  				  Nflag ? NULL : &xi.rcreat,
>  				  force_overwrite, "r");
>  	if (xi.disfile || xi.lisfile || xi.risfile)
> @@ -2164,10 +2164,7 @@ _("rmapbt not supported with realtime devices\n"));
>  	}
>  
>  
> -	if (dsize) {
> -		__uint64_t dbytes;
> -
> -		dbytes = getnum(dsize, &dopts, D_SIZE);
> +	if (dbytes) {
>  		if (dbytes % XFS_MIN_BLOCKSIZE) {
>  			fprintf(stderr,
>  			_("illegal data length %lld, not a multiple of %d\n"),
> @@ -2196,10 +2193,7 @@ _("rmapbt not supported with realtime devices\n"));
>  		usage();
>  	}
>  
> -	if (logsize) {
> -		__uint64_t logbytes;
> -
> -		logbytes = getnum(logsize, &lopts, L_SIZE);
> +	if (logbytes) {
>  		if (logbytes % XFS_MIN_BLOCKSIZE) {
>  			fprintf(stderr,
>  			_("illegal log length %lld, not a multiple of %d\n"),
> @@ -2213,10 +2207,7 @@ _("rmapbt not supported with realtime devices\n"));
>  				(long long)logbytes, blocksize,
>  				(long long)(logblocks << blocklog));
>  	}
> -	if (rtsize) {
> -		__uint64_t rtbytes;
> -
> -		rtbytes = getnum(rtsize, &ropts, R_SIZE);
> +	if (rtbytes) {
>  		if (rtbytes % XFS_MIN_BLOCKSIZE) {
>  			fprintf(stderr,
>  			_("illegal rt length %lld, not a multiple of %d\n"),
> @@ -2233,10 +2224,7 @@ _("rmapbt not supported with realtime devices\n"));
>  	/*
>  	 * If specified, check rt extent size against its constraints.
>  	 */
> -	if (rtextsize) {
> -		__uint64_t rtextbytes;
> -
> -		rtextbytes = getnum(rtextsize, &ropts, R_EXTSIZE);
> +	if (rtextbytes) {
>  		if (rtextbytes % blocksize) {
>  			fprintf(stderr,
>  		_("illegal rt extent size %lld, not a multiple of %d\n"),
> @@ -2253,7 +2241,7 @@ _("rmapbt not supported with realtime devices\n"));
>  		__uint64_t	rswidth;
>  		__uint64_t	rtextbytes;
>  
> -		if (!norsflag && !xi.risfile && !(!rtsize && xi.disfile))
> +		if (!norsflag && !xi.risfile && !(!rtbytes && xi.disfile))
>  			rswidth = ft.rtswidth;
>  		else
>  			rswidth = 0;
> @@ -2364,15 +2352,15 @@ _("rmapbt not supported with realtime devices\n"));
>  		rtfile = _("volume rt");
>  	else if (!xi.rtdev)
>  		rtfile = _("none");
> -	if (dsize && xi.dsize > 0 && dblocks > DTOBT(xi.dsize)) {
> +	if (dbytes && xi.dsize > 0 && dblocks > DTOBT(xi.dsize)) {
>  		fprintf(stderr,
> -			_("size %s specified for data subvolume is too large, "
> +			_("size %lld specified for data subvolume is too large, "
>  			"maximum is %lld blocks\n"),
> -			dsize, (long long)DTOBT(xi.dsize));
> +			(long long)dbytes, (long long)DTOBT(xi.dsize));
>  		usage();
> -	} else if (!dsize && xi.dsize > 0)
> +	} else if (!dbytes && xi.dsize > 0)
>  		dblocks = DTOBT(xi.dsize);
> -	else if (!dsize) {
> +	else if (!dbytes) {
>  		fprintf(stderr, _("can't get size of data subvolume\n"));
>  		usage();
>  	}
> @@ -2405,22 +2393,22 @@ reported by the device (%u).\n"),
>  reported by the device (%u).\n"),
>  			lsectorsize, xi.lbsize);
>  	}
> -	if (rtsize && xi.rtsize > 0 && xi.rtbsize > sectorsize) {
> +	if (rtbytes && xi.rtsize > 0 && xi.rtbsize > sectorsize) {
>  		fprintf(stderr, _(
>  "Warning: the realtime subvolume sector size %u is less than the sector size\n\
>  reported by the device (%u).\n"),
>  			sectorsize, xi.rtbsize);
>  	}
>  
> -	if (rtsize && xi.rtsize > 0 && rtblocks > DTOBT(xi.rtsize)) {
> +	if (rtbytes && xi.rtsize > 0 && rtblocks > DTOBT(xi.rtsize)) {
>  		fprintf(stderr,
> -			_("size %s specified for rt subvolume is too large, "
> +			_("size %lld specified for rt subvolume is too large, "
>  			"maximum is %lld blocks\n"),
> -			rtsize, (long long)DTOBT(xi.rtsize));
> +			(long long)rtbytes, (long long)DTOBT(xi.rtsize));
>  		usage();
> -	} else if (!rtsize && xi.rtsize > 0)
> +	} else if (!rtbytes && xi.rtsize > 0)
>  		rtblocks = DTOBT(xi.rtsize);
> -	else if (rtsize && !xi.rtdev) {
> +	else if (rtbytes && !xi.rtdev) {
>  		fprintf(stderr,
>  			_("size specified for non-existent rt subvolume\n"));
>  		usage();
> @@ -2625,26 +2613,26 @@ an AG size that is one stripe unit smaller, for example %llu.\n"),
>  				   sb_feat.rmapbt, sb_feat.reflink);
>  	ASSERT(min_logblocks);
>  	min_logblocks = MAX(XFS_MIN_LOG_BLOCKS, min_logblocks);
> -	if (!logsize && dblocks >= (1024*1024*1024) >> blocklog)
> +	if (!logbytes && dblocks >= (1024*1024*1024) >> blocklog)
>  		min_logblocks = MAX(min_logblocks, XFS_MIN_LOG_BYTES>>blocklog);
> -	if (logsize && xi.logBBsize > 0 && logblocks > DTOBT(xi.logBBsize)) {
> +	if (logbytes && xi.logBBsize > 0 && logblocks > DTOBT(xi.logBBsize)) {
>  		fprintf(stderr,
> -_("size %s specified for log subvolume is too large, maximum is %lld blocks\n"),
> -			logsize, (long long)DTOBT(xi.logBBsize));
> +_("size %lld specified for log subvolume is too large, maximum is %lld blocks\n"),
> +			(long long)logbytes, (long long)DTOBT(xi.logBBsize));
>  		usage();
> -	} else if (!logsize && xi.logBBsize > 0) {
> +	} else if (!logbytes && xi.logBBsize > 0) {
>  		logblocks = DTOBT(xi.logBBsize);
> -	} else if (logsize && !xi.logdev && !loginternal) {
> +	} else if (logbytes && !xi.logdev && !loginternal) {
>  		fprintf(stderr,
>  			_("size specified for non-existent log subvolume\n"));
>  		usage();
> -	} else if (loginternal && logsize && logblocks >= dblocks) {
> +	} else if (loginternal && logbytes && logblocks >= dblocks) {
>  		fprintf(stderr, _("size %lld too large for internal log\n"),
>  			(long long)logblocks);
>  		usage();
>  	} else if (!loginternal && !xi.logdev) {
>  		logblocks = 0;
> -	} else if (loginternal && !logsize) {
> +	} else if (loginternal && !logbytes) {
>  
>  		if (dblocks < GIGABYTES(1, blocklog)) {
>  			/* tiny filesystems get minimum sized logs. */
> @@ -2708,7 +2696,7 @@ _("size %s specified for log subvolume is too large, maximum is %lld blocks\n"),
>  		 * Readjust the log size to fit within an AG if it was sized
>  		 * automatically.
>  		 */
> -		if (!logsize) {
> +		if (!logbytes) {
>  			logblocks = MIN(logblocks,
>  					libxfs_alloc_ag_max_usable(mp));
>  
> 
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Jan Tulak April 5, 2017, 1 p.m. UTC | #2
On Thu, Mar 16, 2017 at 11:59 PM, Eric Sandeen <sandeen@sandeen.net> wrote:
> The only downside I see to this is that we used to echo back the same
> form that was specified, i.e. -
>
> # mkfs.xfs -f -d size=4e fsfile
> size 4e specified for data subvolume is too large, maximum is 262144 blocks
> # mkfs.xfs -f -d size=4611686018427387904 fsfile
> size 4611686018427387904 specified for data subvolume is too large, maximum is 262144 blocks
> # mkfs.xfs -f -d size=1125899906842624b fsfile
> size 1125899906842624b specified for data subvolume is too large, maximum is 262144 blocks
>
> now we always get back the raw byte value:
>
> # mkfs/mkfs.xfs -f -d size=4e fsfile
> size 4611686018427387904 specified for data subvolume is too large, maximum is 262144 blocks
>
> Anything that fails the getnum() checks echo back the original
> form on the cmdline; this case is different because getnum() passes,
> but by the time we do value checking all we have is the bytes.  Is
> that intentional/desirable?
>
> So it's a change, not necessarily incorrect or unacceptable, but
> I wanted to highlight it and check.  It wouldn't be too hard to
> convert it right away, but keep the string around for error printing
> purposes, I suppose.
>

It goes back into the original reporting style later in the set. I
tried to change the patch to avoid this temporary change, but the
issue is, I loose the old raw strings before I have access to the
necessary indexes for the option table to read the raw string from it,
or before a code shuffling brings the reporting closer to where the
raw string still exists.

Given that it is only a temporary change of style and it seems to be
too deeply depending on other changes, I'm keeping it as a TODO, but
not a blocker. Maybe if the patch can be split and one of the parts
moved after other commits...

Jan
Eric Sandeen April 5, 2017, 2:05 p.m. UTC | #3
On 4/5/17 8:00 AM, Jan Tulak wrote:
> On Thu, Mar 16, 2017 at 11:59 PM, Eric Sandeen <sandeen@sandeen.net> wrote:
>> The only downside I see to this is that we used to echo back the same
>> form that was specified, i.e. -
>>
>> # mkfs.xfs -f -d size=4e fsfile
>> size 4e specified for data subvolume is too large, maximum is 262144 blocks
>> # mkfs.xfs -f -d size=4611686018427387904 fsfile
>> size 4611686018427387904 specified for data subvolume is too large, maximum is 262144 blocks
>> # mkfs.xfs -f -d size=1125899906842624b fsfile
>> size 1125899906842624b specified for data subvolume is too large, maximum is 262144 blocks
>>
>> now we always get back the raw byte value:
>>
>> # mkfs/mkfs.xfs -f -d size=4e fsfile
>> size 4611686018427387904 specified for data subvolume is too large, maximum is 262144 blocks
>>
>> Anything that fails the getnum() checks echo back the original
>> form on the cmdline; this case is different because getnum() passes,
>> but by the time we do value checking all we have is the bytes.  Is
>> that intentional/desirable?
>>
>> So it's a change, not necessarily incorrect or unacceptable, but
>> I wanted to highlight it and check.  It wouldn't be too hard to
>> convert it right away, but keep the string around for error printing
>> purposes, I suppose.
>>
> 
> It goes back into the original reporting style later in the set. I
> tried to change the patch to avoid this temporary change, but the
> issue is, I loose the old raw strings before I have access to the
> necessary indexes for the option table to read the raw string from it,
> or before a code shuffling brings the reporting closer to where the
> raw string still exists.
> 
> Given that it is only a temporary change of style and it seems to be
> too deeply depending on other changes, I'm keeping it as a TODO, but
> not a blocker. Maybe if the patch can be split and one of the parts
> moved after other commits...

Even simply noting in the changelog that it's temporary, and the reason
for the change, would be helpful.  It's a big enough patchset that it's
hard for the reviewer to keep everything in mind across 20+ patches.  ;)

Thanks,
-Eric
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diff mbox

Patch

diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
index affa4052..b3bc218a 100644
--- a/mkfs/xfs_mkfs.c
+++ b/mkfs/xfs_mkfs.c
@@ -1417,7 +1417,7 @@  main(
 	char			*dfile;
 	int			dirblocklog;
 	int			dirblocksize;
-	char			*dsize;
+	__uint64_t 		dbytes;
 	int			dsu;
 	int			dsw;
 	int			dsunit;
@@ -1441,7 +1441,7 @@  main(
 	xfs_rfsblock_t		logblocks;
 	char			*logfile;
 	int			loginternal;
-	char			*logsize;
+	__uint64_t 		logbytes;
 	xfs_fsblock_t		logstart;
 	int			lvflag;
 	int			lsflag;
@@ -1470,11 +1470,11 @@  main(
 	char			*protostring;
 	int			qflag;
 	xfs_rfsblock_t		rtblocks;
+	__uint64_t 		rtbytes;
 	xfs_extlen_t		rtextblocks;
 	xfs_rtblock_t		rtextents;
-	char			*rtextsize;
+	__uint64_t 		rtextbytes;
 	char			*rtfile;
-	char			*rtsize;
 	xfs_sb_t		*sbp;
 	int			sectorlog;
 	__uint64_t		sector_mask;
@@ -1522,7 +1522,8 @@  main(
 	qflag = 0;
 	imaxpct = inodelog = inopblock = isize = 0;
 	dfile = logfile = rtfile = NULL;
-	dsize = logsize = rtsize = rtextsize = protofile = NULL;
+	protofile = NULL;
+	rtbytes = rtextbytes = logbytes = dbytes = 0;
 	dsu = dsw = dsunit = dswidth = lalign = lsu = lsunit = 0;
 	nodsflag = norsflag = 0;
 	force_overwrite = 0;
@@ -1586,7 +1587,7 @@  main(
 					xi.dname = getstr(value, &dopts, D_NAME);
 					break;
 				case D_SIZE:
-					dsize = getstr(value, &dopts, D_SIZE);
+					dbytes = getnum(value, &dopts, D_SIZE);
 					break;
 				case D_SUNIT:
 					dsunit = getnum(value, &dopts, D_SUNIT);
@@ -1731,7 +1732,7 @@  main(
 					lvflag = 1;
 					break;
 				case L_SIZE:
-					logsize = getstr(value, &lopts, L_SIZE);
+					logbytes = getnum(value, &lopts, L_SIZE);
 					break;
 				case L_SECTLOG:
 					lsectorlog = getnum(value, &lopts,
@@ -1860,8 +1861,7 @@  main(
 
 				switch (getsubopt(&p, subopts, &value)) {
 				case R_EXTSIZE:
-					rtextsize = getstr(value, &ropts,
-							   R_EXTSIZE);
+					rtextbytes = getnum(value, &ropts, R_EXTSIZE);
 					break;
 				case R_FILE:
 					xi.risfile = getnum(value, &ropts,
@@ -1873,7 +1873,7 @@  main(
 							   R_NAME);
 					break;
 				case R_SIZE:
-					rtsize = getstr(value, &ropts, R_SIZE);
+					rtbytes = getnum(value, &ropts, R_SIZE);
 					break;
 				case R_NOALIGN:
 					norsflag = getnum(value, &ropts,
@@ -1976,14 +1976,14 @@  _("Minimum block size for CRC enabled filesystems is %d bytes.\n"),
 	 * sector size mismatches between the new filesystem and the underlying
 	 * host filesystem.
 	 */
-	check_device_type(dfile, &xi.disfile, !dsize, !dfile,
+	check_device_type(dfile, &xi.disfile, !dbytes, !dfile,
 			  Nflag ? NULL : &xi.dcreat, force_overwrite, "d");
 	if (!loginternal)
-		check_device_type(xi.logname, &xi.lisfile, !logsize, !xi.logname,
+		check_device_type(xi.logname, &xi.lisfile, !logbytes, !xi.logname,
 				  Nflag ? NULL : &xi.lcreat,
 				  force_overwrite, "l");
 	if (xi.rtname)
-		check_device_type(xi.rtname, &xi.risfile, !rtsize, !xi.rtname,
+		check_device_type(xi.rtname, &xi.risfile, !rtbytes, !xi.rtname,
 				  Nflag ? NULL : &xi.rcreat,
 				  force_overwrite, "r");
 	if (xi.disfile || xi.lisfile || xi.risfile)
@@ -2164,10 +2164,7 @@  _("rmapbt not supported with realtime devices\n"));
 	}
 
 
-	if (dsize) {
-		__uint64_t dbytes;
-
-		dbytes = getnum(dsize, &dopts, D_SIZE);
+	if (dbytes) {
 		if (dbytes % XFS_MIN_BLOCKSIZE) {
 			fprintf(stderr,
 			_("illegal data length %lld, not a multiple of %d\n"),
@@ -2196,10 +2193,7 @@  _("rmapbt not supported with realtime devices\n"));
 		usage();
 	}
 
-	if (logsize) {
-		__uint64_t logbytes;
-
-		logbytes = getnum(logsize, &lopts, L_SIZE);
+	if (logbytes) {
 		if (logbytes % XFS_MIN_BLOCKSIZE) {
 			fprintf(stderr,
 			_("illegal log length %lld, not a multiple of %d\n"),
@@ -2213,10 +2207,7 @@  _("rmapbt not supported with realtime devices\n"));
 				(long long)logbytes, blocksize,
 				(long long)(logblocks << blocklog));
 	}
-	if (rtsize) {
-		__uint64_t rtbytes;
-
-		rtbytes = getnum(rtsize, &ropts, R_SIZE);
+	if (rtbytes) {
 		if (rtbytes % XFS_MIN_BLOCKSIZE) {
 			fprintf(stderr,
 			_("illegal rt length %lld, not a multiple of %d\n"),
@@ -2233,10 +2224,7 @@  _("rmapbt not supported with realtime devices\n"));
 	/*
 	 * If specified, check rt extent size against its constraints.
 	 */
-	if (rtextsize) {
-		__uint64_t rtextbytes;
-
-		rtextbytes = getnum(rtextsize, &ropts, R_EXTSIZE);
+	if (rtextbytes) {
 		if (rtextbytes % blocksize) {
 			fprintf(stderr,
 		_("illegal rt extent size %lld, not a multiple of %d\n"),
@@ -2253,7 +2241,7 @@  _("rmapbt not supported with realtime devices\n"));
 		__uint64_t	rswidth;
 		__uint64_t	rtextbytes;
 
-		if (!norsflag && !xi.risfile && !(!rtsize && xi.disfile))
+		if (!norsflag && !xi.risfile && !(!rtbytes && xi.disfile))
 			rswidth = ft.rtswidth;
 		else
 			rswidth = 0;
@@ -2364,15 +2352,15 @@  _("rmapbt not supported with realtime devices\n"));
 		rtfile = _("volume rt");
 	else if (!xi.rtdev)
 		rtfile = _("none");
-	if (dsize && xi.dsize > 0 && dblocks > DTOBT(xi.dsize)) {
+	if (dbytes && xi.dsize > 0 && dblocks > DTOBT(xi.dsize)) {
 		fprintf(stderr,
-			_("size %s specified for data subvolume is too large, "
+			_("size %lld specified for data subvolume is too large, "
 			"maximum is %lld blocks\n"),
-			dsize, (long long)DTOBT(xi.dsize));
+			(long long)dbytes, (long long)DTOBT(xi.dsize));
 		usage();
-	} else if (!dsize && xi.dsize > 0)
+	} else if (!dbytes && xi.dsize > 0)
 		dblocks = DTOBT(xi.dsize);
-	else if (!dsize) {
+	else if (!dbytes) {
 		fprintf(stderr, _("can't get size of data subvolume\n"));
 		usage();
 	}
@@ -2405,22 +2393,22 @@  reported by the device (%u).\n"),
 reported by the device (%u).\n"),
 			lsectorsize, xi.lbsize);
 	}
-	if (rtsize && xi.rtsize > 0 && xi.rtbsize > sectorsize) {
+	if (rtbytes && xi.rtsize > 0 && xi.rtbsize > sectorsize) {
 		fprintf(stderr, _(
 "Warning: the realtime subvolume sector size %u is less than the sector size\n\
 reported by the device (%u).\n"),
 			sectorsize, xi.rtbsize);
 	}
 
-	if (rtsize && xi.rtsize > 0 && rtblocks > DTOBT(xi.rtsize)) {
+	if (rtbytes && xi.rtsize > 0 && rtblocks > DTOBT(xi.rtsize)) {
 		fprintf(stderr,
-			_("size %s specified for rt subvolume is too large, "
+			_("size %lld specified for rt subvolume is too large, "
 			"maximum is %lld blocks\n"),
-			rtsize, (long long)DTOBT(xi.rtsize));
+			(long long)rtbytes, (long long)DTOBT(xi.rtsize));
 		usage();
-	} else if (!rtsize && xi.rtsize > 0)
+	} else if (!rtbytes && xi.rtsize > 0)
 		rtblocks = DTOBT(xi.rtsize);
-	else if (rtsize && !xi.rtdev) {
+	else if (rtbytes && !xi.rtdev) {
 		fprintf(stderr,
 			_("size specified for non-existent rt subvolume\n"));
 		usage();
@@ -2625,26 +2613,26 @@  an AG size that is one stripe unit smaller, for example %llu.\n"),
 				   sb_feat.rmapbt, sb_feat.reflink);
 	ASSERT(min_logblocks);
 	min_logblocks = MAX(XFS_MIN_LOG_BLOCKS, min_logblocks);
-	if (!logsize && dblocks >= (1024*1024*1024) >> blocklog)
+	if (!logbytes && dblocks >= (1024*1024*1024) >> blocklog)
 		min_logblocks = MAX(min_logblocks, XFS_MIN_LOG_BYTES>>blocklog);
-	if (logsize && xi.logBBsize > 0 && logblocks > DTOBT(xi.logBBsize)) {
+	if (logbytes && xi.logBBsize > 0 && logblocks > DTOBT(xi.logBBsize)) {
 		fprintf(stderr,
-_("size %s specified for log subvolume is too large, maximum is %lld blocks\n"),
-			logsize, (long long)DTOBT(xi.logBBsize));
+_("size %lld specified for log subvolume is too large, maximum is %lld blocks\n"),
+			(long long)logbytes, (long long)DTOBT(xi.logBBsize));
 		usage();
-	} else if (!logsize && xi.logBBsize > 0) {
+	} else if (!logbytes && xi.logBBsize > 0) {
 		logblocks = DTOBT(xi.logBBsize);
-	} else if (logsize && !xi.logdev && !loginternal) {
+	} else if (logbytes && !xi.logdev && !loginternal) {
 		fprintf(stderr,
 			_("size specified for non-existent log subvolume\n"));
 		usage();
-	} else if (loginternal && logsize && logblocks >= dblocks) {
+	} else if (loginternal && logbytes && logblocks >= dblocks) {
 		fprintf(stderr, _("size %lld too large for internal log\n"),
 			(long long)logblocks);
 		usage();
 	} else if (!loginternal && !xi.logdev) {
 		logblocks = 0;
-	} else if (loginternal && !logsize) {
+	} else if (loginternal && !logbytes) {
 
 		if (dblocks < GIGABYTES(1, blocklog)) {
 			/* tiny filesystems get minimum sized logs. */
@@ -2708,7 +2696,7 @@  _("size %s specified for log subvolume is too large, maximum is %lld blocks\n"),
 		 * Readjust the log size to fit within an AG if it was sized
 		 * automatically.
 		 */
-		if (!logsize) {
+		if (!logbytes) {
 			logblocks = MIN(logblocks,
 					libxfs_alloc_ag_max_usable(mp));