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mdadm-2.6.4-519561f7.patch
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36
mdadm-2.6.4-519561f7.patch
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@ -0,0 +1,36 @@
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based on
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commit 519561f73f7ba987affde8b174d2691bb098439d
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Author: Neil Brown <neilb@suse.de>
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Date: Tue Apr 29 17:13:53 2008 +1000
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Fix possible bug with bitmap space allocation with v1.0 metadata
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When adding a device to an array, make sure we don't reserve
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so much space for the bitmap that there isn't room for the data.
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(minus the roff comments change)
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---
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super1.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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--- super1.c.orig
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+++ super1.c
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@@ -903,7 +903,7 @@ static int write_init_super1(struct supe
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* for a bitmap.
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*/
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array_size = __le64_to_cpu(sb->size);
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- /* work out how much space we left of a bitmap */
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+ /* work out how much space we left for a bitmap */
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bm_space = choose_bm_space(array_size);
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switch(st->minor_version) {
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@@ -913,6 +913,8 @@ static int write_init_super1(struct supe
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sb_offset &= ~(4*2-1);
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sb->super_offset = __cpu_to_le64(sb_offset);
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sb->data_offset = __cpu_to_le64(0);
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+ if (sb_offset - bm_space < array_size)
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+ bm_space = sb_offset - array_size;
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sb->data_size = __cpu_to_le64(sb_offset - bm_space);
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break;
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case 1:
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70
mdadm-2.6.4-6fb79233.patch
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70
mdadm-2.6.4-6fb79233.patch
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@ -0,0 +1,70 @@
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based on
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commit 6fb79233b050b4a3575f0e466ab04b5d301ac1de
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Author: Neil Brown <neilb@suse.de>
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Date: Mon Apr 28 16:30:09 2008 +1000
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Allow creation of a RAID6 with a single missing device.
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This did not work before as we couldn't mark it clean as there would
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be some parity blocks out of sync, and raid6 will not assemble a
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dirty degraded array.
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So make such arrays doubly degraded (the last device becomes a spare)
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and clean.
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---
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Create.c | 20 ++++++++++++++++++--
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1 file changed, 18 insertions(+), 2 deletions(-)
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--- Create.c.orig
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+++ Create.c
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@@ -63,6 +63,7 @@ int Create(struct supertype *st, char *m
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int fail=0, warn=0;
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struct stat stb;
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int first_missing = subdevs * 2;
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+ int second_missing = subdevs * 2;
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int missing_disks = 0;
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int insert_point = subdevs * 2; /* where to insert a missing drive */
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void *super;
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@@ -203,6 +204,8 @@ int Create(struct supertype *st, char *m
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if (strcasecmp(dname, "missing")==0) {
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if (first_missing > dnum)
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first_missing = dnum;
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+ if (second_missing > dnum && dnum > first_missing)
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+ second_missing = dnum;
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missing_disks ++;
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continue;
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}
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@@ -341,6 +344,18 @@ int Create(struct supertype *st, char *m
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break;
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}
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}
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+ /* For raid6, if creating with 1 missing drive, make a good drive
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+ * into a spare, else the create will fail
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+ */
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+ if (assume_clean == 0 && force == 0 && first_missing < raiddisks &&
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+ second_missing >= raiddisks && level == 6) {
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+ insert_point = raiddisks - 1;
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+ if (insert_point == first_missing)
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+ insert_point--;
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+ sparedisks ++;
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+ array.active_disks--;
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+ missing_disks++;
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+ }
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if (level <= 0 && first_missing != subdevs * 2) {
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fprintf(stderr,
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@@ -360,11 +375,12 @@ int Create(struct supertype *st, char *m
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if (fstat(mdfd, &stb)==0)
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array.md_minor = minor(stb.st_rdev);
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array.not_persistent = 0;
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- /*** FIX: Need to do something about RAID-6 here ***/
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+
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if ( ( (level == 4 || level == 5) &&
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(insert_point < raiddisks || first_missing < raiddisks) )
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||
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- ( level == 6 && missing_disks == 2)
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+ ( level == 6 && (insert_point < raiddisks
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+ || second_missing < raiddisks))
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||
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assume_clean
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)
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76
mdadm-2.6.4-7a3be72f.patch
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76
mdadm-2.6.4-7a3be72f.patch
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@ -0,0 +1,76 @@
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Based on
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commit 7a3be72fc621b4a7589e923cf0652c51493f831a
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Author: Neil Brown <neilb@suse.de>
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Date: Mon Apr 28 16:29:37 2008 +1000
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Fix problems with array.size overflowing on large arrays.
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array.size is 32bits and counts K. So for arrays with
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more than 4Terrabytes, it can overflow.
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The correct number can be read from sysfs, but there are still
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a few places that use array.size and risk truncation. What is worse.
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they compare a number of kilobytes with a number of sectors !!
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So use get_component_size() to read the sysfs information, and be
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more consistent about units.
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---
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Detail.c | 2 +-
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Manage.c | 14 ++++++++++++--
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2 files changed, 13 insertions(+), 3 deletions(-)
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--- Detail.c.orig
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+++ Detail.c
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@@ -174,7 +174,7 @@ int Detail(char *dev, int brief, int exp
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if (dsize > 0)
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printf(" Used Dev Size : %llu%s\n",
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dsize,
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- human_size((long long)array.size<<10));
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+ human_size((long long)dsize<<10));
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else
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printf(" Used Dev Size : unknown\n");
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} else
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--- Manage.c.orig
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+++ Manage.c
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@@ -188,6 +188,7 @@ int Manage_subdevs(char *devname, int fd
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*/
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mdu_array_info_t array;
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mdu_disk_info_t disc;
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+ unsigned long long array_size;
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mddev_dev_t dv, next = NULL;
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struct stat stb;
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int j, jnext = 0;
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@@ -203,6 +204,15 @@ int Manage_subdevs(char *devname, int fd
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devname);
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return 1;
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}
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+
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+ /* array.size is only 32 bit and may be truncated.
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+ * So read from sysfs if possible, and record number of sectors
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+ */
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+
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+ array_size = get_component_size(fd);
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+ if (array_size <= 0)
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+ array_size = array.size * 2;
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+
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for (dv = devlist, j=0 ; dv; dv = next, j = jnext) {
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unsigned long long ldsize;
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char dvname[20];
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@@ -335,7 +345,7 @@ int Manage_subdevs(char *devname, int fd
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/* Make sure device is large enough */
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if (st->ss->avail_size(st, ldsize/512) <
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- array.size) {
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+ array_size) {
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fprintf(stderr, Name ": %s not large enough to join array\n",
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dv->devname);
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return 1;
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@@ -409,7 +419,7 @@ int Manage_subdevs(char *devname, int fd
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/* non-persistent. Must ensure that new drive
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* is at least array.size big.
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*/
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- if (ldsize/512 < array.size) {
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+ if (ldsize/512 < array_size) {
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fprintf(stderr, Name ": %s not large enough to join array\n",
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dv->devname);
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return 1;
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@ -1,3 +1,9 @@
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-------------------------------------------------------------------
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Wed Apr 30 15:57:14 CEST 2008 - mmarek@suse.cz
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- added some fixes from Neil's git repo, fixing bnc#368704 among
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others
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-------------------------------------------------------------------
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Mon Feb 4 19:24:54 CET 2008 - mmarek@suse.cz
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12
mdadm.spec
12
mdadm.spec
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# norootforbuild
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Name: mdadm
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Version: 2.6.4
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Release: 23
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Release: 37
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BuildRequires: sgmltool
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PreReq: %fillup_prereq %insserv_prereq
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Obsoletes: raidtools
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@ -27,6 +28,9 @@ Source1: Software-RAID.HOWTO.tar.bz2
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Source2: sysconfig.mdadm
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Source3: mdadmd
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Source4: boot.md
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Patch1: mdadm-2.6.4-7a3be72f.patch
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Patch2: mdadm-2.6.4-6fb79233.patch
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Patch3: mdadm-2.6.4-519561f7.patch
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%description
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Mdadm is a program that can be used to control Linux md devices. It is
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@ -41,6 +45,9 @@ Authors:
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%prep
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%setup -q -a1
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%patch1
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%patch2
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%patch3
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%build
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%{suse_update_config -f}
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@ -115,6 +122,9 @@ rm -rf $RPM_BUILD_ROOT
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%{_var}/adm/fillup-templates/sysconfig.mdadm
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%changelog
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* Wed Apr 30 2008 mmarek@suse.cz
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- added some fixes from Neil's git repo, fixing bnc#368704 among
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others
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* Mon Feb 04 2008 mmarek@suse.cz
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- correctly display rc_status in boot.md
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* Wed Jan 23 2008 mmarek@suse.cz
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