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md: Add support for Raid0->Raid10 takeover

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Signed-off-by: Maciej Trela <maciej.trela@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Trela, Maciej
2010-03-08 16:02:45 +11:00
committed by NeilBrown
parent 9af204cf72
commit dab8b29248
2 changed files with 155 additions and 51 deletions
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12
drivers/md/raid10.h
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@ -33,9 +33,16 @@ struct r10_private_data_s {
* 1 stripe.
*/
sector_t dev_sectors; /* temp copy of mddev->dev_sectors */
int chunk_shift; /* shift from chunks to sectors */
sector_t chunk_mask;
int scale_disks; /* When starting array, multiply
* each ->raid_disk by this.
* Need for raid0->raid10 migration
*/
struct list_head retry_list;
/* queue pending writes and submit them on unplug */
struct bio_list pending_bio_list;
@ -57,6 +64,11 @@ struct r10_private_data_s {
mempool_t *r10bio_pool;
mempool_t *r10buf_pool;
struct page *tmppage;
/* When taking over an array from a different personality, we store
* the new thread here until we fully activate the array.
*/
struct mdk_thread_s *thread;
};
typedef struct r10_private_data_s conf_t;