diff options
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index e3261c438a6..8603c0692ea 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -2235,6 +2235,30 @@ chunk_size_store(mddev_t *mddev, const char *buf, size_t len) 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_attrs[] = { &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, int mode) mddev->array_size = 0; mddev->size = 0; mddev->raid_disks = 0; + mddev->recovery_cp = 0; disk = mddev->gendisk; if (disk) |