From 42e641abeb312a91b841f1b1ea73661e4bd5a31c Mon Sep 17 00:00:00 2001

From: Kinga Tanska <kinga.tanska@intel.com>

Date: Tue, 21 Jan 2020 10:38:52 +0100

Subject: [RHEL7.9 PATCH 57/71] Add support for Tebibytes

Adding support for Tebibytes enables display size of

volumes in Tebibytes and Terabytes when they are

bigger than 2048 GiB (or GB).

Signed-off-by: Kinga Tanska <kinga.tanska@intel.com>

Signed-off-by: Jes Sorensen <jsorensen@fb.com>

---

 mdadm.8.in | 20 ++++++++++----------

 util.c     | 47 +++++++++++++++++++++++++++++++++--------------

 2 files changed, 43 insertions(+), 24 deletions(-)

diff --git a/mdadm.8.in b/mdadm.8.in

index ca02a33..5d00faf 100644

--- a/mdadm.8.in

+++ b/mdadm.8.in

@@ -467,8 +467,8 @@ If this is not specified

 size, though if there is a variance among the drives of greater than 1%, a warning is

 issued.

-A suffix of 'K', 'M' or 'G' can be given to indicate Kilobytes, Megabytes or

-Gigabytes respectively.

+A suffix of 'K', 'M', 'G' or 'T' can be given to indicate Kilobytes,

+Megabytes, Gigabytes or Terabytes respectively.

 Sometimes a replacement drive can be a little smaller than the

 original drives though this should be minimised by IDEMA standards.

@@ -532,8 +532,8 @@ problems the array can be made bigger again with no loss with another

 .B "\-\-grow \-\-array\-size="

 command.

-A suffix of 'K', 'M' or 'G' can be given to indicate Kilobytes, Megabytes or

-Gigabytes respectively.

+A suffix of 'K', 'M', 'G' or 'T' can be given to indicate Kilobytes,

+Megabytes, Gigabytes or Terabytes respectively.

 A value of

 .B max

 restores the apparent size of the array to be whatever the real

@@ -551,8 +551,8 @@ This is only meaningful for RAID0, RAID4, RAID5, RAID6, and RAID10.

 RAID4, RAID5, RAID6, and RAID10 require the chunk size to be a power

 of 2.  In any case it must be a multiple of 4KB.

-A suffix of 'K', 'M' or 'G' can be given to indicate Kilobytes, Megabytes or

-Gigabytes respectively.

+A suffix of 'K', 'M', 'G' or 'T' can be given to indicate Kilobytes,

+Megabytes, Gigabytes or Terabytes respectively.

 .TP

 .BR \-\-rounding=

@@ -767,8 +767,8 @@ When using an

 bitmap, the chunksize defaults to 64Meg, or larger if necessary to

 fit the bitmap into the available space.

-A suffix of 'K', 'M' or 'G' can be given to indicate Kilobytes, Megabytes or

-Gigabytes respectively.

+A suffix of 'K', 'M', 'G' or 'T' can be given to indicate Kilobytes,

+Megabytes, Gigabytes or Terabytes respectively.

 .TP

 .BR \-W ", " \-\-write\-mostly

@@ -857,8 +857,8 @@ an array which was originally created using a different version of

 which computed a different offset.

 Setting the offset explicitly over-rides the default.  The value given

-is in Kilobytes unless a suffix of 'K', 'M' or 'G' is used to explicitly

-indicate Kilobytes, Megabytes or Gigabytes respectively.

+is in Kilobytes unless a suffix of 'K', 'M', 'G' or 'T' is used to explicitly

+indicate Kilobytes, Megabytes, Gigabytes or Terabytes respectively.

 Since Linux 3.4,

 .B \-\-data\-offset

diff --git a/util.c b/util.c

index 64dd409..07f9dc3 100644

--- a/util.c

+++ b/util.c

@@ -389,7 +389,7 @@ int mdadm_version(char *version)

 unsigned long long parse_size(char *size)

 {

 	/* parse 'size' which should be a number optionally

-	 * followed by 'K', 'M', or 'G'.

+	 * followed by 'K', 'M'. 'G' or 'T'.

 	 * Without a suffix, K is assumed.

 	 * Number returned is in sectors (half-K)

 	 * INVALID_SECTORS returned on error.

@@ -411,6 +411,10 @@ unsigned long long parse_size(char *size)

 			c++;

 			s *= 1024 * 1024 * 2;

 			break;

+		case 'T':

+			c++;

+			s *= 1024 * 1024 * 1024 * 2LL;

+			break;

 		case 's': /* sectors */

 			c++;

 			break;

@@ -893,13 +897,14 @@ char *human_size(long long bytes)

 {

 	static char buf[47];

-	/* We convert bytes to either centi-M{ega,ibi}bytes or

-	 * centi-G{igi,ibi}bytes, with appropriate rounding,

-	 * and then print 1/100th of those as a decimal.

+	/* We convert bytes to either centi-M{ega,ibi}bytes,

+	 * centi-G{igi,ibi}bytes or centi-T{era,ebi}bytes

+	 * with appropriate rounding, and then print

+	 * 1/100th of those as a decimal.

 	 * We allow upto 2048Megabytes before converting to

-	 * gigabytes, as that shows more precision and isn't

+	 * gigabytes and 2048Gigabytes before converting to

+	 * terabytes, as that shows more precision and isn't

 	 * too large a number.

-	 * Terabytes are not yet handled.

 	 */

 	if (bytes < 5000*1024)

@@ -909,11 +914,16 @@ char *human_size(long long bytes)

 		long cMB  = (bytes / ( 1000000LL / 200LL ) +1) /2;

 		snprintf(buf, sizeof(buf), " (%ld.%02ld MiB %ld.%02ld MB)",

 			cMiB/100, cMiB % 100, cMB/100, cMB % 100);

-	} else {

+	} else if (bytes < 2*1024LL*1024LL*1024LL*1024LL) {

 		long cGiB = (bytes * 200LL / (1LL<<30) +1) / 2;

 		long cGB  = (bytes / (1000000000LL/200LL ) +1) /2;

 		snprintf(buf, sizeof(buf), " (%ld.%02ld GiB %ld.%02ld GB)",

 			cGiB/100, cGiB % 100, cGB/100, cGB % 100);

+	} else {

+		long cTiB = (bytes * 200LL / (1LL<<40) + 1) / 2;

+		long cTB  = (bytes / (1000000000000LL / 200LL) + 1) / 2;

+		snprintf(buf, sizeof(buf), " (%ld.%02ld TiB %ld.%02ld TB)",

+			cTiB/100, cTiB % 100, cTB/100, cTB % 100);

 	}

 	return buf;

 }

@@ -922,13 +932,14 @@ char *human_size_brief(long long bytes, int prefix)

 {

 	static char buf[30];

-	/* We convert bytes to either centi-M{ega,ibi}bytes or

-	 * centi-G{igi,ibi}bytes, with appropriate rounding,

-	 * and then print 1/100th of those as a decimal.

+	/* We convert bytes to either centi-M{ega,ibi}bytes,

+	 * centi-G{igi,ibi}bytes or centi-T{era,ebi}bytes

+	 * with appropriate rounding, and then print

+	 * 1/100th of those as a decimal.

 	 * We allow upto 2048Megabytes before converting to

-	 * gigabytes, as that shows more precision and isn't

+	 * gigabytes and 2048Gigabytes before converting to

+	 * terabytes, as that shows more precision and isn't

 	 * too large a number.

-	 * Terabytes are not yet handled.

 	 *

 	 * If prefix == IEC, we mean prefixes like kibi,mebi,gibi etc.

 	 * If prefix == JEDEC, we mean prefixes like kilo,mega,giga etc.

@@ -941,10 +952,14 @@ char *human_size_brief(long long bytes, int prefix)

 			long cMiB = (bytes * 200LL / (1LL<<20) +1) /2;

 			snprintf(buf, sizeof(buf), "%ld.%02ldMiB",

 				 cMiB/100, cMiB % 100);

-		} else {

+		} else if (bytes < 2*1024LL*1024LL*1024LL*1024LL) {

 			long cGiB = (bytes * 200LL / (1LL<<30) +1) /2;

 			snprintf(buf, sizeof(buf), "%ld.%02ldGiB",

 				 cGiB/100, cGiB % 100);

+		} else {

+			long cTiB = (bytes * 200LL / (1LL<<40) + 1) / 2;

+			snprintf(buf, sizeof(buf), "%ld.%02ldTiB",

+				 cTiB/100, cTiB % 100);

 		}

 	}

 	else if (prefix == JEDEC) {

@@ -952,10 +967,14 @@ char *human_size_brief(long long bytes, int prefix)

 			long cMB  = (bytes / ( 1000000LL / 200LL ) +1) /2;

 			snprintf(buf, sizeof(buf), "%ld.%02ldMB",

 				 cMB/100, cMB % 100);

-		} else {

+		} else if (bytes < 2*1024LL*1024LL*1024LL*1024LL) {

 			long cGB  = (bytes / (1000000000LL/200LL ) +1) /2;

 			snprintf(buf, sizeof(buf), "%ld.%02ldGB",

 				 cGB/100, cGB % 100);

+		} else {

+			long cTB  = (bytes / (1000000000000LL / 200LL) + 1) / 2;

+			snprintf(buf, sizeof(buf), "%ld.%02ldTB",

+				 cTB/100, cTB % 100);

 		}

 	}

 	else

-- 

2.7.5