Signed-off-by: Neil Brown <neilb@xxxxxxx>
### Diffstat output
./Documentation/md.txt | 6 ++++++
./drivers/md/md.c | 26 ++++++++++++++++++++++++++
2 files changed, 32 insertions(+)
diff ./Documentation/md.txt~current~ ./Documentation/md.txt
--- ./Documentation/md.txt~current~ 2006-06-01 15:05:30.000000000 +1000
+++ ./Documentation/md.txt 2006-06-01 15:05:30.000000000 +1000
@@ -205,6 +205,12 @@ All md devices contain:
simply a number that is interpretted differently by different
levels. It can be written while assembling an array.
+ resync_start
+ The point at which resync should start. If no resync is needed,
+ this will be a very large number. At array creation it will
+ default to 0, though starting the array as 'clean' will
+ set it much larger.
+
new_dev
This file can be written but not read. The value written should
be a block device number as major:minor. e.g. 8:0
diff ./drivers/md/md.c~current~ ./drivers/md/md.c
--- ./drivers/md/md.c~current~ 2006-06-01 15:05:30.000000000 +1000
+++ ./drivers/md/md.c 2006-06-01 15:05:30.000000000 +1000
@@ -2235,6 +2235,30 @@ chunk_size_store(mddev_t *mddev, const c
static struct md_sysfs_entry md_chunk_size =
__ATTR(chunk_size, 0644, chunk_size_show, chunk_size_store);
+static ssize_t
+resync_start_show(mddev_t *mddev, char *page)
+{
+ return sprintf(page, "%llu\n", (unsigned long long)mddev->recovery_cp);
+}
+
+static ssize_t
+resync_start_store(mddev_t *mddev, const char *buf, size_t len)
+{
+ /* can only set chunk_size if array is not yet active */
+ char *e;
+ unsigned long long n = simple_strtoull(buf, &e, 10);
+
+ if (mddev->pers)
+ return -EBUSY;
+ if (!*buf || (*e && *e != '\n'))
+ return -EINVAL;
+
+ mddev->recovery_cp = n;
+ return len;
+}
+static struct md_sysfs_entry md_resync_start =
+__ATTR(resync_start, 0644, resync_start_show, resync_start_store);
+
/*
* The array state can be:
*
@@ -2771,6 +2795,7 @@ static struct attribute *md_default_attr
&md_raid_disks.attr,
&md_chunk_size.attr,
&md_size.attr,
+ &md_resync_start.attr,
&md_metadata.attr,
&md_new_device.attr,
&md_safe_delay.attr,
@@ -3263,6 +3288,7 @@ static int do_md_stop(mddev_t * mddev, i
mddev->array_size = 0;
mddev->size = 0;
mddev->raid_disks = 0;
+ mddev->recovery_cp = 0;
disk = mddev->gendisk;
if (disk)
-
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