97 lines
3.1 KiB
Diff
97 lines
3.1 KiB
Diff
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From f877ca62c13e475d55f6fe3fac5c9732ed44b49e Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Dan=20Hor=C3=A1k?= <dan@danny.cz>
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Date: Fri, 28 Jan 2011 14:27:39 +0100
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Subject: [PATCH 58/61] fdasd/dasdfmt: fix format 7 label
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Description: fdasd/dasdfmt: fix format 7 label
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Symptom: Backups of Linux on System z disks from z/OS do not work
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when the disk is not fully partitioned.
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Problem: The format 7 label written by fdasd and dasdfmt is incorrect.
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The extend for free space has one track less than required
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which is recognized as inconsistent vtoc state by z/OS tools.
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Solution: Fix libvtoc to write the format 7 label correctly.
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---
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libvtoc/vtoc.c | 22 +++++++++++++---------
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1 files changed, 13 insertions(+), 9 deletions(-)
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diff --git a/libvtoc/vtoc.c b/libvtoc/vtoc.c
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index cebd5a4..36269a4 100644
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--- a/libvtoc/vtoc.c
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+++ b/libvtoc/vtoc.c
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@@ -1204,7 +1204,7 @@ void vtoc_update_format7_label_add (format7_label_t *f7, int verbose,
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if ((ext->a + ext->b) == 0x00000000)
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continue;
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- if ((ext->b + 1) == tmp->a) {
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+ if ((ext->b) == tmp->a) {
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/* this extent precedes the new one */
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ext->b = tmp->b;
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bzero(tmp, sizeof(ds7ext_t));
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@@ -1216,7 +1216,7 @@ void vtoc_update_format7_label_add (format7_label_t *f7, int verbose,
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continue;
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}
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- if (ext->a == (tmp->b + 1))
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+ if (ext->a == (tmp->b))
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{
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/* this extent succeeds the new one */
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ext->a = tmp->a;
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@@ -1240,7 +1240,7 @@ void vtoc_update_format7_label_del (format7_label_t *f7, int verbose,
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{
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ds7ext_t *ext;
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int i, counter=0;
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-
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+
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for (i=0; i<16; i++) {
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if (i<5)
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ext = &f7->DS7EXTNT[i];
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@@ -1258,7 +1258,7 @@ void vtoc_update_format7_label_del (format7_label_t *f7, int verbose,
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if ((a == ext->a) && (b < ext->b)) {
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/* left-bounded in free space gap */
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- ext->a = b + 1;
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+ ext->a = b;
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if (verbose)
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printf("FMT7 add extent: left-bounded\n");
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counter++;
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@@ -1267,7 +1267,7 @@ void vtoc_update_format7_label_del (format7_label_t *f7, int verbose,
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if ((a > ext->a) && (b == ext->b)) {
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/* right-bounded in free space gap */
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- ext->b = a - 1;
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+ ext->b = a;
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if (verbose)
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printf("FMT7 add extent: right-bounded\n");
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counter++;
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@@ -1277,8 +1277,8 @@ void vtoc_update_format7_label_del (format7_label_t *f7, int verbose,
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if ((a > ext->a) && (b < ext->b)) {
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/* partition devides free space into 2 pieces */
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vtoc_update_format7_label_add(f7, verbose,
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- b+1, ext->b);
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- ext->b = a - 1;
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+ b, ext->b);
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+ ext->b = a;
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if (verbose)
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printf("FMT7 add extent: 2 pieces\n");
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counter++;
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@@ -1311,10 +1311,14 @@ void vtoc_set_freespace(format4_label_t *f4, format5_label_t *f5,
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{
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if ((cyl * trk) > BIG_DISK_SIZE) {
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if (ch == '+') {
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- vtoc_update_format7_label_add(f7, verbose, start,stop);
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+ vtoc_update_format7_label_add(f7, verbose, start,
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+ /* ds7ext RTA + 1 */
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+ stop + 1);
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}
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else if (ch == '-') {
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- vtoc_update_format7_label_del(f7, verbose, start,stop);
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+ vtoc_update_format7_label_del(f7, verbose, start,
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+ /* ds7ext RTA + 1 */
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+ stop + 1);
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}
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else {
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printf("BUG: syntax error in vtoc_set_freespace.\n");
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--
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1.7.3.5
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