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base/SOURCES/Build2-Stop-bothering-about...

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From e6e5f8f1267de4f310415231b3434fce2d25f02a Mon Sep 17 00:00:00 2001
From: Jes Sorensen <Jes.Sorensen@gmail.com>
Date: Wed, 5 Apr 2017 15:20:52 -0400
Subject: [RHEL7.5 PATCH 055/169] Build: Stop bothering about supporting md
driver older than 0.90.00
The kernel has been stuck at md driver version 0.90.03 for at least a
decade. No point in continuing to support the older API.
Signed-off-by: Jes Sorensen <Jes.Sorensen@gmail.com>
---
Build.c | 187 ++++++++++++++++++++++++----------------------------------------
1 file changed, 69 insertions(+), 118 deletions(-)
diff --git a/Build.c b/Build.c
index 691dd6f..11ba12f 100644
--- a/Build.c
+++ b/Build.c
@@ -39,13 +39,8 @@ int Build(char *mddev, struct mddev_dev *devlist,
* geometry is 0xpp00cc
* where pp is personality: 1==linear, 2=raid0
* cc = chunk size factor: 0==4k, 1==8k etc.
- *
- * For md_version >= 0.90.0 we call
- * SET_ARRAY_INFO, ADD_NEW_DISK, RUN_ARRAY
- *
*/
int i;
- int vers;
struct stat stb;
int subdevs = 0, missing_disks = 0;
struct mddev_dev *dv;
@@ -55,6 +50,8 @@ int Build(char *mddev, struct mddev_dev *devlist,
char chosen_name[1024];
int uuid[4] = {0,0,0,0};
struct map_ent *map = NULL;
+ mdu_array_info_t array;
+ mdu_param_t param; /* not used by syscall */
if (s->level == UnSet) {
pr_err("a RAID level is needed to Build an array.\n");
@@ -122,39 +119,30 @@ int Build(char *mddev, struct mddev_dev *devlist,
map_update(&map, fd2devnm(mdfd), "none", uuid, chosen_name);
map_unlock(&map);
- vers = md_get_version(mdfd);
-
- /* looks Ok, go for it */
- if (vers >= 9000) {
- mdu_array_info_t array;
- array.level = s->level;
- if (s->size == MAX_SIZE)
- s->size = 0;
- array.size = s->size;
- array.nr_disks = s->raiddisks;
- array.raid_disks = s->raiddisks;
- array.md_minor = 0;
- if (fstat(mdfd, &stb)==0)
- array.md_minor = minor(stb.st_rdev);
- array.not_persistent = 1;
- array.state = 0; /* not clean, but no errors */
- if (s->assume_clean)
- array.state |= 1;
- array.active_disks = s->raiddisks - missing_disks;
- array.working_disks = s->raiddisks - missing_disks;
- array.spare_disks = 0;
- array.failed_disks = missing_disks;
- if (s->chunk == 0 && (s->level==0 || s->level==LEVEL_LINEAR))
- s->chunk = 64;
- array.chunk_size = s->chunk*1024;
- array.layout = s->layout;
- if (md_set_array_info(mdfd, &array)) {
- pr_err("md_set_array_info() failed for %s: %s\n",
- mddev, strerror(errno));
- goto abort;
- }
- } else if (s->bitmap_file) {
- pr_err("bitmaps not supported with this kernel\n");
+ array.level = s->level;
+ if (s->size == MAX_SIZE)
+ s->size = 0;
+ array.size = s->size;
+ array.nr_disks = s->raiddisks;
+ array.raid_disks = s->raiddisks;
+ array.md_minor = 0;
+ if (fstat(mdfd, &stb) == 0)
+ array.md_minor = minor(stb.st_rdev);
+ array.not_persistent = 1;
+ array.state = 0; /* not clean, but no errors */
+ if (s->assume_clean)
+ array.state |= 1;
+ array.active_disks = s->raiddisks - missing_disks;
+ array.working_disks = s->raiddisks - missing_disks;
+ array.spare_disks = 0;
+ array.failed_disks = missing_disks;
+ if (s->chunk == 0 && (s->level==0 || s->level==LEVEL_LINEAR))
+ s->chunk = 64;
+ array.chunk_size = s->chunk*1024;
+ array.layout = s->layout;
+ if (md_set_array_info(mdfd, &array)) {
+ pr_err("md_set_array_info() failed for %s: %s\n",
+ mddev, strerror(errno));
goto abort;
}
@@ -167,8 +155,10 @@ int Build(char *mddev, struct mddev_dev *devlist,
}
/* now add the devices */
for ((i=0), (dv = devlist) ; dv ; i++, dv=dv->next) {
+ mdu_disk_info_t disk;
unsigned long long dsize;
int fd;
+
if (strcmp("missing", dv->devname) == 0)
continue;
if (stat(dv->devname, &stb)) {
@@ -191,94 +181,58 @@ int Build(char *mddev, struct mddev_dev *devlist,
(s->size == 0 || s->size == MAX_SIZE || dsize < s->size))
s->size = dsize;
close(fd);
- if (vers >= 9000) {
- mdu_disk_info_t disk;
- disk.number = i;
- disk.raid_disk = i;
- disk.state = (1<<MD_DISK_SYNC) | (1<<MD_DISK_ACTIVE);
- if (dv->writemostly == FlagSet)
- disk.state |= 1<<MD_DISK_WRITEMOSTLY;
- disk.major = major(stb.st_rdev);
- disk.minor = minor(stb.st_rdev);
- if (ioctl(mdfd, ADD_NEW_DISK, &disk)) {
- pr_err("ADD_NEW_DISK failed for %s: %s\n",
- dv->devname, strerror(errno));
- goto abort;
- }
- } else {
- if (ioctl(mdfd, REGISTER_DEV, &stb.st_rdev)) {
- pr_err("REGISTER_DEV failed for %s: %s.\n",
- dv->devname, strerror(errno));
- goto abort;
- }
+ disk.number = i;
+ disk.raid_disk = i;
+ disk.state = (1<<MD_DISK_SYNC) | (1<<MD_DISK_ACTIVE);
+ if (dv->writemostly == FlagSet)
+ disk.state |= 1<<MD_DISK_WRITEMOSTLY;
+ disk.major = major(stb.st_rdev);
+ disk.minor = minor(stb.st_rdev);
+ if (ioctl(mdfd, ADD_NEW_DISK, &disk)) {
+ pr_err("ADD_NEW_DISK failed for %s: %s\n",
+ dv->devname, strerror(errno));
+ goto abort;
}
}
/* now to start it */
- if (vers >= 9000) {
- mdu_param_t param; /* not used by syscall */
- if (s->bitmap_file) {
- bitmap_fd = open(s->bitmap_file, O_RDWR);
- if (bitmap_fd < 0) {
- int major = BITMAP_MAJOR_HI;
+ if (s->bitmap_file) {
+ bitmap_fd = open(s->bitmap_file, O_RDWR);
+ if (bitmap_fd < 0) {
+ int major = BITMAP_MAJOR_HI;
#if 0
- if (s->bitmap_chunk == UnSet) {
- pr_err("%s cannot be openned.",
- s->bitmap_file);
- goto abort;
- }
-#endif
- if (vers < 9003) {
- major = BITMAP_MAJOR_HOSTENDIAN;
-#ifdef __BIG_ENDIAN
- pr_err("Warning - bitmaps created on this kernel are not portable\n"
- " between different architectures. Consider upgrading the Linux kernel.\n");
+ if (s->bitmap_chunk == UnSet) {
+ pr_err("%s cannot be openned.", s->bitmap_file);
+ goto abort;
+ }
#endif
- }
- bitmapsize = s->size>>9; /* FIXME wrong for RAID10 */
- if (CreateBitmap(s->bitmap_file, 1, NULL, s->bitmap_chunk,
- c->delay, s->write_behind, bitmapsize, major)) {
- goto abort;
- }
- bitmap_fd = open(s->bitmap_file, O_RDWR);
- if (bitmap_fd < 0) {
- pr_err("%s cannot be openned.",
- s->bitmap_file);
- goto abort;
- }
+ bitmapsize = s->size >> 9; /* FIXME wrong for RAID10 */
+ if (CreateBitmap(s->bitmap_file, 1, NULL,
+ s->bitmap_chunk, c->delay,
+ s->write_behind, bitmapsize, major)) {
+ goto abort;
}
- if (bitmap_fd >= 0) {
- if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) {
- pr_err("Cannot set bitmap file for %s: %s\n",
- mddev, strerror(errno));
- goto abort;
- }
+ bitmap_fd = open(s->bitmap_file, O_RDWR);
+ if (bitmap_fd < 0) {
+ pr_err("%s cannot be openned.", s->bitmap_file);
+ goto abort;
}
}
- if (ioctl(mdfd, RUN_ARRAY, &param)) {
- pr_err("RUN_ARRAY failed: %s\n",
- strerror(errno));
- if (s->chunk & (s->chunk-1)) {
- cont_err("Problem may be that chunk size is not a power of 2\n");
+ if (bitmap_fd >= 0) {
+ if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) {
+ pr_err("Cannot set bitmap file for %s: %s\n",
+ mddev, strerror(errno));
+ goto abort;
}
- goto abort;
- }
- } else {
- unsigned long arg;
- arg=0;
- while (s->chunk > 4096) {
- arg++;
- s->chunk >>= 1;
}
- if (s->level == 0)
- arg |= 0x20000;
- else
- arg |= 0x10000;
- if (ioctl(mdfd, START_MD, arg)) {
- pr_err("START_MD failed: %s\n",
- strerror(errno));
- goto abort;
+ }
+ if (ioctl(mdfd, RUN_ARRAY, &param)) {
+ pr_err("RUN_ARRAY failed: %s\n", strerror(errno));
+ if (s->chunk & (s->chunk - 1)) {
+ cont_err("Problem may be that chunk size is not a power of 2\n");
}
+ goto abort;
}
+
if (c->verbose >= 0)
pr_err("array %s built and started.\n",
mddev);
@@ -287,10 +241,7 @@ int Build(char *mddev, struct mddev_dev *devlist,
return 0;
abort:
- if (vers >= 9000)
- ioctl(mdfd, STOP_ARRAY, 0);
- else
- ioctl(mdfd, STOP_MD, 0);
+ ioctl(mdfd, STOP_ARRAY, 0);
close(mdfd);
return 1;
}
--
2.7.4