Bump minimum kernel version to 2.6.32

Summary: At this point it probably is reasonable to drop support for
anything prior to 3.10.

Signed-off-by: Jes Sorensen <jes@trained-monkey.org>

5 files changed, 2 insertions, 45 deletions

diff --git a/Create.c b/Create.c
index 0911bf9..aa0472d 100644
--- a/Create.c
+++ b/Create.c
@@ -636,11 +636,6 @@ int Create(struct supertype *st, char *mddev,
 		break;
 	case LEVEL_LINEAR:
 		/* a chunksize of zero 0s perfectly valid (and preferred) since 2.6.16 */
-		if (get_linux_version() < 2006016 && s->chunk == 0) {
-			s->chunk = 64;
-			if (c->verbose > 0)
-				pr_err("chunk size defaults to 64K\n");
-		}
 		break;
 	case 1:
 	case LEVEL_FAULTY:
diff --git a/Grow.c b/Grow.c
index 06001f2..8fa9787 100644
--- a/Grow.c
+++ b/Grow.c
@@ -1708,14 +1708,6 @@ char *analyse_change(char *devname, struct mdinfo *info, struct reshape *re)
 		return NULL;
 	}
 
-	if (re->after.data_disks == re->before.data_disks &&
-	    get_linux_version() < 2006032)
-		return "in-place reshape is not safe before 2.6.32 - sorry.";
-
-	if (re->after.data_disks < re->before.data_disks &&
-	    get_linux_version() < 2006030)
-		return "reshape to fewer devices is not supported before 2.6.30 - sorry.";
-
 	re->backup_blocks = compute_backup_blocks(
 		info->new_chunk, info->array.chunk_size,
 		re->after.data_disks, re->before.data_disks);
@@ -1895,14 +1887,6 @@ int Grow_reshape(char *devname, int fd,
 		return 1;
 	}
 
-	if (s->raiddisks && s->raiddisks < array.raid_disks &&
-	    array.level > 1 && get_linux_version() < 2006032 &&
-	    !check_env("MDADM_FORCE_FEWER")) {
-		pr_err("reducing the number of devices is not safe before Linux 2.6.32\n"
-			"       Please use a newer kernel\n");
-		return 1;
-	}
-
 	if (array.level > 1 && s->size > 1 &&
 	    (unsigned long long) (array.chunk_size / 1024) > s->size) {
 		pr_err("component size must be larger than chunk size.\n");
diff --git a/Manage.c b/Manage.c
index fde6aba..f54de7c 100644
--- a/Manage.c
+++ b/Manage.c
@@ -461,17 +461,6 @@ done:
 		goto out;
 	}
 
-	if (get_linux_version() < 2006028) {
-		/* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array
-		 * was stopped, so We'll do it here just to be sure.  Drop any
-		 * partitions as well...
-		 */
-		if (fd >= 0)
-			ioctl(fd, BLKRRPART, 0);
-		if (mdi)
-			sysfs_uevent(mdi, "change");
-	}
-
 	if (devnm[0] && use_udev()) {
 		struct map_ent *mp = map_by_devnm(&map, devnm);
 		remove_devices(devnm, mp ? mp->path : NULL);
@@ -621,12 +610,6 @@ int attempt_re_add(int fd, int tfd, struct mddev_dev *dv,
 		 * though.
 		 */
 		mdu_disk_info_t disc;
-		/* re-add doesn't work for version-1 superblocks
-		 * before 2.6.18 :-(
-		 */
-		if (array->major_version == 1 &&
-		    get_linux_version() <= 2006018)
-			goto skip_re_add;
 		disc.number = mdi.disk.number;
 		if (md_get_disk_info(fd, &disc) != 0 ||
 		    disc.major != 0 || disc.minor != 0)
diff --git a/mdadm.c b/mdadm.c
index 4685ad6..2296911 100644
--- a/mdadm.c
+++ b/mdadm.c
@@ -107,8 +107,8 @@ int main(int argc, char *argv[])
 
 	srandom(time(0) ^ getpid());
 
-	if (get_linux_version() < 2006015) {
-		pr_err("This version of mdadm does not support kernels older than 2.6.15\n");
+	if (get_linux_version() < 2006032) {
+		pr_err("This version of mdadm does not support kernels older than 2.6.32\n");
 		exit(1);
 	}
 
diff --git a/super1.c b/super1.c
index 1d20ef5..938c3a6 100644
--- a/super1.c
+++ b/super1.c
@@ -2033,11 +2033,6 @@ static int write_init_super1(struct supertype *st)
 				/* same array, so preserve events and
 				 * dev_number */
 				sb->events = refsb->events;
-				/* bugs in 2.6.17 and earlier mean the
-				 * dev_number chosen in Manage must be preserved
-				 */
-				if (get_linux_version() >= 2006018)
-					sb->dev_number = refsb->dev_number;
 			}
 			free_super1(refst);
 		}