On Tuesday May 19, raziebe@xxxxxxxxx wrote:
> Report to the user what are the raid zones
You didn't reply to my question of:
- why did you want this?
- can it be combined with other information printed by
make_strip_zones?
- if not, can it be combined with the MD_DEBUG part of
raid0_status??
I've applied it for now, but I need answers before I can promise to
keep it.
NeilBrown
>
> raid0.c | 33 +++++++++++++++++++++++++++++++++
> 1 file changed, 33 insertions(+)
>
> Signed-off-by: raziebe@xxxxxxxxx
> ---
> diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
> index 8049a92..0a6d0fa 100644
> --- a/drivers/md/raid0.c
> +++ b/drivers/md/raid0.c
> @@ -52,6 +52,38 @@ static int raid0_congested(void *data, int bits)
> return ret;
> }
>
> +/*
> + * inform the user of the raid configuration
> +*/
> +static void dump_zones(mddev_t *mddev)
> +{
> + int j, k, h;
> + sector_t zone_size = 0;
> + sector_t zone_start = 0;
> + char b[BDEVNAME_SIZE];
> + raid0_conf_t *conf = mddev->private;
> + printk(KERN_INFO "******* %s configuration *********",
> + mdname(mddev));
> + h = 0;
> + for (j = 0; j < conf->nr_strip_zones; j++) {
> + printk("\nzone%d", j);
> + printk("=[");
> + for (k = 0; k < conf->strip_zone[j].nb_dev; k++)
> + printk("%s/",
> + bdevname(conf->devlist[j*mddev->raid_disks
> + + k]->bdev, b));
> +
> + zone_size = conf->strip_zone[j].zone_end - zone_start;
> + printk("]\n\t zone offset=%llukb "
> + "device offset=%llukb size=%llukb\n",
> + (unsigned long long)zone_start>>1,
> + (unsigned long long)conf->strip_zone[j].dev_start>>1,
> + (unsigned long long)zone_size>>1);
> + zone_start = conf->strip_zone[j].zone_end;
> + }
> + printk(KERN_INFO "**********************************\n\n");
> +}
> +
> static int create_strip_zones(mddev_t *mddev)
> {
> int i, c, j, err;
> @@ -291,6 +323,7 @@ static int raid0_run(mddev_t *mddev)
> }
>
> blk_queue_merge_bvec(mddev->queue, raid0_mergeable_bvec);
> + dump_zones(mddev);
> return 0;
> }
>
>
>
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