After kernel md module commit 480523feae581, in md-cluster env,
mddev->in_sync always zero, it will make array.state never set
up MD_SB_CLEAN. it causes "mdadm -D /dev/mdX" show state 'active'
all the time.
bitmap.c: add a new API IsBitmapDirty() to support inquiry bitmap
dirty or clean.
Signed-off-by: Zhao Heming <heming.zhao@xxxxxxxx>
---
v4:
- Detail.c: follow Jes comment, split if into 2 lines
v3:
- Detail.c: fix error logic: v2 code didn't check bitmap when dv is null.
v2:
- Detail.c: change to read only one device.
- bitmap.c: modify IsBitmapDirty() to check all bitmap on the selected device.
---
Detail.c | 21 ++++++++++++++++++++-
bitmap.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
mdadm.h | 1 +
3 files changed, 76 insertions(+), 1 deletion(-)
diff --git a/Detail.c b/Detail.c
index 24eeba0..2682e87 100644
--- a/Detail.c
+++ b/Detail.c
@@ -495,8 +495,27 @@ int Detail(char *dev, struct context *c)
sra->array_state);
else
arrayst = "clean";
- } else
+ } else {
arrayst = "active";
+ if (array.state & (1<<MD_SB_CLUSTERED)) {
+ for (d = 0; d < max_disks * 2; d++) {
+ char *dv;
+ mdu_disk_info_t disk = disks[d];
+
+ if (d >= array.raid_disks * 2 &&
+ disk.major == 0 && disk.minor == 0)
+ continue;
+ if ((d & 1) && disk.major == 0 && disk.minor == 0)
+ continue;
+ dv = map_dev_preferred(disk.major, disk.minor, 0,
+ c->prefer);
+ if (!dv)
+ continue;
+ arrayst = IsBitmapDirty(dv) ? "active" : "clean";
+ break;
+ }
+ }
+ }
printf(" State : %s%s%s%s%s%s%s \n",
arrayst, st,
diff --git a/bitmap.c b/bitmap.c
index e38cb96..1095dc8 100644
--- a/bitmap.c
+++ b/bitmap.c
@@ -368,6 +368,61 @@ free_info:
return rv;
}
+int IsBitmapDirty(char *filename)
+{
+ /*
+ * Read the bitmap file
+ * This function is currently for cluster-md only.
+ * Return: 1(dirty), 0 (clean), -1(error)
+ */
+
+ int fd = -1, rv = 0, i;
+ struct supertype *st = NULL;
+ bitmap_info_t *info = NULL;
+ bitmap_super_t *sb = NULL;
+
+ fd = bitmap_file_open(filename, &st, 0);
+ free(st);
+ if (fd < 0)
+ goto out;
+
+ info = bitmap_fd_read(fd, 0);
+ close(fd);
+ if (!info)
+ goto out;
+
+ sb = &info->sb;
+ for (i = 0; i < (int)sb->nodes; i++) {
+ st = NULL;
+ free(info);
+ info = NULL;
+
+ fd = bitmap_file_open(filename, &st, i);
+ free(st);
+ if (fd < 0)
+ goto out;
+
+ info = bitmap_fd_read(fd, 0);
+ close(fd);
+ if (!info)
+ goto out;
+
+ sb = &info->sb;
+ if (sb->magic != BITMAP_MAGIC) { /* invalid bitmap magic */
+ free(info);
+ goto out;
+ }
+
+ if (info->dirty_bits)
+ rv = 1;
+ }
+
+ free(info);
+ return rv;
+out:
+ return -1;
+}
+
int CreateBitmap(char *filename, int force, char uuid[16],
unsigned long chunksize, unsigned long daemon_sleep,
unsigned long write_behind,
diff --git a/mdadm.h b/mdadm.h
index 399478b..ba8ba91 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -1447,6 +1447,7 @@ extern int CreateBitmap(char *filename, int force, char uuid[16],
unsigned long long array_size,
int major);
extern int ExamineBitmap(char *filename, int brief, struct supertype *st);
+extern int IsBitmapDirty(char *filename);
extern int Write_rules(char *rule_name);
extern int bitmap_update_uuid(int fd, int *uuid, int swap);
--
2.25.0
