ivampiresp/Spdk
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

bdev/raid: Handle resize event from a base_bdev

Browse Source 
Signed-off-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Change-Id: Id22973cf7ce49e8bbfec16c4518dfd3a7033c61a
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/16259
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Reviewed-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Shuhei Matsumoto 2023-01-11 16:41:24 +09:00 committed by Tomasz Zawadzki
parent eb5789ceae
commit c9224e267d
2 changed files with 48 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
module/bdev/raid/bdev_raid.c
View File

@ -1220,7 +1220,7 @@ raid_bdev_find_by_base_bdev(struct spdk_bdev *base_bdev, struct raid_bdev **_rai
* is removed. This function checks if this base bdev is part of any raid bdev
* or not. If yes, it takes necessary action on that particular raid bdev.
* params:
* base_bdev - pointer to base bdev pointer which got removed
* base_bdev - pointer to base bdev which got removed
* returns:
* none
*/
@ -1259,6 +1259,40 @@ raid_bdev_remove_base_bdev(struct spdk_bdev *base_bdev)
raid_bdev_deconfigure(raid_bdev, NULL, NULL);
}
/*
* brief:
* raid_bdev_resize_base_bdev function is called by below layers when base_bdev
* is resized. This function checks if the smallest size of the base_bdevs is changed.
* If yes, call module handler to resize the raid_bdev if implemented.
* params:
* base_bdev - pointer to base bdev which got resized.
* returns:
* none
*/
static void
raid_bdev_resize_base_bdev(struct spdk_bdev *base_bdev)
{
struct raid_bdev *raid_bdev = NULL;
struct raid_base_bdev_info *base_info;
SPDK_DEBUGLOG(bdev_raid, "raid_bdev_resize_base_bdev\n");
/* Find the raid_bdev which has claimed this base_bdev */
if (!raid_bdev_find_by_base_bdev(base_bdev, &raid_bdev, &base_info)) {
SPDK_ERRLOG("raid_bdev whose base_bdev '%s' not found\n", base_bdev->name);
return;
}
assert(spdk_get_thread() == spdk_thread_get_app_thread());
SPDK_NOTICELOG("base_bdev '%s' was resized: old size %" PRIu64 ", new size %" PRIu64 "\n",
base_bdev->name, base_info->blockcnt, base_bdev->blockcnt);
if (raid_bdev->module->resize) {
raid_bdev->module->resize(raid_bdev);
}
}
/*
* brief:
* raid_bdev_event_base_bdev function is called by below layers when base_bdev
@ -1278,6 +1312,9 @@ raid_bdev_event_base_bdev(enum spdk_bdev_event_type type, struct spdk_bdev *bdev
case SPDK_BDEV_EVENT_REMOVE:
raid_bdev_remove_base_bdev(bdev);
break;
case SPDK_BDEV_EVENT_RESIZE:
raid_bdev_resize_base_bdev(bdev);
break;
default:
SPDK_NOTICELOG("Unsupported bdev event: type %d\n", type);
break;
@ -1367,6 +1404,7 @@ raid_bdev_configure_base_bdev(struct raid_bdev *raid_bdev, struct raid_base_bdev
base_info->bdev = bdev;
base_info->desc = desc;
base_info->blockcnt = bdev->blockcnt;
raid_bdev->num_base_bdevs_discovered++;
assert(raid_bdev->num_base_bdevs_discovered <= raid_bdev->num_base_bdevs);

9
module/bdev/raid/bdev_raid.h
View File

@ -61,6 +61,9 @@ struct raid_base_bdev_info {
* descriptor will be closed
*/
bool remove_scheduled;
/* Hold the number of blocks to know how large the base bdev is resized. */
uint64_t blockcnt;
};
/*
@ -228,6 +231,12 @@ struct raid_bdev_module {
*/
struct spdk_io_channel *(*get_io_channel)(struct raid_bdev *raid_bdev);
/*
* Called when a base_bdev is resized to resize the raid if the condition
* is satisfied.
*/
void (*resize)(struct raid_bdev *raid_bdev);
TAILQ_ENTRY(raid_bdev_module) link;
};