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thin_metadata_size: Fix long names of units

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Both implementations of thin_metadata_size believe units are defined
like this:

    1024 == kilobyte == k
    1000 == kibibyte == K

and so on.  Fix the 1000/1024 confusion, while continuing to follow the
LVM convention of using lowercase letters for binary units, so that we
have:

    1024 == kibibyte == k
    1000 == kilobyte == K
This commit is contained in:
Benjamin Gilbert
2014-05-17 03:48:13 -04:00
parent e7e3e93ec6
commit 2679e7f088
3 changed files with 20 additions and 20 deletions
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24
man8/thin_metadata_size.8
View File

@@ -15,13 +15,13 @@ Because thin provisioning pools are holding widely variable contents,
this tool is needed to provide sensible initial default size.
.IP "\fB\-b, \-\-block-size\fP \fIBLOCKSIZE[bskKmMgGtTpPeEzZyY]\fP"
Block size of thin provisioned devices in units of bytes,sectors,kilobytes,kibibytes,... respectively.
Block size of thin provisioned devices in units of bytes, sectors, kibibytes, kilobytes, ... respectively.
Default is in sectors without a block size unit specifier.
Size/number option arguments can be followed by unit specifiers in short one character
and long form (eg. -b1m or -b1megabytes).
and long form (eg. -b1m or -b1mebibytes).
.IP "\fB\-s, \-\-pool-size\fP \fIPOOLSIZE[bskKmMgGtTpPeEzZyY]\fP"
Thin provisioning pool size in units of bytes,sectors,kilobytes,kibibytes,... respectively.
Thin provisioning pool size in units of bytes, sectors, kibibytes, kilobytes, ... respectively.
Default is in sectors without a pool size unit specifier.
.IP "\fB\-m, \-\-max-thins\fP \fI#[bskKmMgGtTpPeEzZyY]\fP"
@@ -30,7 +30,7 @@ Unit identifier supported to allow for convenient entry of large quantities, eg.
Default is absolute quantity without a number unit specifier.
.IP "\fB\-u, \-\-unit\fP \fI{bskKmMgGtTpPeEzZyY}\fP"
Output unit specifier in units of bytes,sectors,kilobytes,kibibytes,... respectively.
Output unit specifier in units of bytes, sectors, kibibytes, kilobytes, ... respectively.
Default is in sectors without an output unit specifier.
.IP "\fB\-n, \-\-numeric-only [short|long]\fP"
@@ -43,24 +43,24 @@ Print help and exit.
Output version information and exit.
.SH EXAMPLES
Calculates the thin provisioning metadata device size for block size 64 kilobytes,
pool size 1 terabytes and maximum number of thin provisioned devices and snapshots of 1000
Calculates the thin provisioning metadata device size for block size 64 kibibytes,
pool size 1 tebibytes and maximum number of thin provisioned devices and snapshots of 1000
in units of sectors with long output:
.sp
.B thin_metadata_size -b64k -s1t -m1000
Or (using the long options instead) for block size 1 gigabyte, pool size 1 petabytes and maximum number of thin provisioned devices
and snapshots of 1 million with numeric only output in units of gigabytes:
Or (using the long options instead) for block size 1 gibibyte, pool size 1 petabyte and maximum number of thin provisioned devices
and snapshots of 1 million with numeric-only output in units of gigabytes:
.sp
.B thin_metadata_size --block-size=1g --pool-size=1p --max-thins=1M --unit=g --numeric-only
.B thin_metadata_size --block-size=1g --pool-size=1P --max-thins=1M --unit=G --numeric-only
Same as before (1g,1p,1M,numeric-only) but with unit specifier character appended:
Same as before (1g, 1P, 1M, numeric-only) but with unit specifier character appended:
.sp
.B thin_metadata_size --block-size=1giga --pool-size=1petabytes --max-thins=1mebi --unit=g --numeric-only=short
.B thin_metadata_size --block-size=1gibi --pool-size=1petabytes --max-thins=1mega --unit=G --numeric-only=short
Or with unit specifier string appended:
.sp
.B thin_metadata_size --block-size=1giga --pool-size=1petabytes --max-thins=1mebi --unit=g -nlong
.B thin_metadata_size --block-size=1gibi --pool-size=1petabytes --max-thins=1mega --unit=G -nlong
.SH DIAGNOSTICS
.B thin_metadata_size

8
thin-provisioning/thin_metadata_size.c
View File

@@ -111,10 +111,10 @@ static struct global *init_prg(char *prg_path)
unsigned u;
static char *unit_chars = "bskKmMgGtTpPeEzZyY";
static char *unit_strings[] = { "bytes", "sectors",
"kilobytes", "kibibytes", "megabytes", "mebibytes",
"gigabytes", "gibibytes", "terabytes", "tebibytes",
"petabytes", "pebibytes", "exabytes", "ebibytes",
"zetabytes", "zebibytes", "yottabytes", "yobibytes", NULL };
"kibibytes", "kilobytes", "mebibytes", "megabytes",
"gibibytes", "gigabytes", "tebibytes", "terabytes",
"pebibytes", "petabytes", "ebibytes", "exabytes",
"zebibytes", "zetabytes", "yobibytes", "yottabytes", NULL };
static unsigned long long unit_factors[ARRAY_SIZE(unit_strings) - 1] = { 1, 512, 1024, 1000 };
struct global *r = malloc(sizeof(*r));

8
thin-provisioning/thin_metadata_size.rb
View File

@@ -22,10 +22,10 @@ def init_units
units[:bytes_per_sector] = 512
units[:chars] = "bskKmMgGtTpPeEzZyY"
units[:strings] = [ 'bytes', 'sectors',
'kilobytes', 'kibibytes', 'megabytes', 'mebibytes',
'gigabytes', 'gibibytes', 'terabytes', 'tebibytes',
'petabytes', 'pebibytes', 'exabytes', 'ebibytes',
'zetabytes', 'zebibytes', 'yottabytes', 'yobibytes' ]
'kibibytes', 'kilobytes', 'mebibytes', 'megabytes',
'gibibytes', 'gigabytes', 'tebibytes', 'terabytes',
'pebibytes', 'petabytes', 'ebibytes', 'exabytes',
'zebibytes', 'zetabytes', 'yobibytes', 'yottabytes' ]
units[:factors] = [ 1, units[:bytes_per_sector] ]
1.step(8) { |e| units[:factors] += [ 1024**e, 1000**e ] }
units