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bdev/raid: Factor out alloc base bdev resource (desc and claim) operation

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Reorder raid_bdev_create and raid_bdev_alloc_base_bdev_resource to
simplify logic.

Change-Id: I9653179112e11fe97cab535bd80a78060eb30a05
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-on: https://review.gerrithub.io/421196
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Kunal Sablok <kunal.sablok@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
This commit is contained in:
Shuhei Matsumoto 2018-08-03 15:54:18 +09:00 committed by Ben Walker
parent c9a00cdf03
commit 15bd396f30
1 changed files with 47 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

71
lib/bdev/raid/bdev_raid.c
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@ -170,7 +170,6 @@ raid_bdev_cleanup(struct raid_bdev *raid_bdev)
assert(0);
}
TAILQ_REMOVE(&g_spdk_raid_bdev_list, raid_bdev, link_global_list);
assert(raid_bdev->bdev.name);
free(raid_bdev->bdev.name);
raid_bdev->bdev.name = NULL;
assert(raid_bdev->base_bdev_info);
@ -1200,6 +1199,47 @@ raid_bdev_create(struct raid_bdev_config *raid_cfg, struct raid_bdev **_raid_bde
return 0;
}
/*
* brief
* raid_bdev_alloc_base_bdev_resource allocates resource of base bdev.
* params:
* raid_bdev - pointer to raid bdev
* bdev - pointer to base bdev
* base_bdev_slot - position to add base bdev
* returns:
* 0 - success
* non zero - failure
*/
static int
raid_bdev_alloc_base_bdev_resource(struct raid_bdev *raid_bdev, struct spdk_bdev *bdev,
uint32_t base_bdev_slot)
{
struct spdk_bdev_desc *desc;
if (spdk_bdev_open(bdev, true, raid_bdev_remove_base_bdev, bdev, &desc)) {
SPDK_ERRLOG("Unable to create desc on bdev '%s'\n", bdev->name);
return -1;
}
if (spdk_bdev_module_claim_bdev(bdev, NULL, &g_raid_if)) {
SPDK_ERRLOG("Unable to claim this bdev as it is already claimed\n");
spdk_bdev_close(desc);
return -1;
}
SPDK_DEBUGLOG(SPDK_LOG_BDEV_RAID, "bdev %s is claimed\n", bdev->name);
assert(raid_bdev->state != RAID_BDEV_STATE_ONLINE);
assert(base_bdev_slot < raid_bdev->num_base_bdevs);
raid_bdev->base_bdev_info[base_bdev_slot].base_bdev = bdev;
raid_bdev->base_bdev_info[base_bdev_slot].base_bdev_desc = desc;
raid_bdev->num_base_bdevs_discovered++;
assert(raid_bdev->num_base_bdevs_discovered <= raid_bdev->num_base_bdevs);
return 0;
}
/*
* brief:
* raid_bdev_remove_base_bdev function is called by below layers when base_bdev
@ -1287,7 +1327,6 @@ raid_bdev_add_base_device(struct spdk_bdev *bdev)
{
struct raid_bdev_config *raid_bdev_config = NULL;
struct raid_bdev *raid_bdev;
struct spdk_bdev_desc *desc;
struct spdk_bdev *raid_bdev_gen;
uint32_t blocklen;
uint64_t min_blockcnt;
@ -1305,38 +1344,22 @@ raid_bdev_add_base_device(struct spdk_bdev *bdev)
}
assert(raid_bdev_config);
if (spdk_bdev_open(bdev, true, raid_bdev_remove_base_bdev, bdev, &desc)) {
SPDK_ERRLOG("Unable to create desc on bdev '%s'\n", bdev->name);
return -1;
}
if (spdk_bdev_module_claim_bdev(bdev, NULL, &g_raid_if)) {
SPDK_ERRLOG("Unable to claim this bdev as it is already claimed\n");
spdk_bdev_close(desc);
return -1;
}
SPDK_DEBUGLOG(SPDK_LOG_BDEV_RAID, "bdev %s is claimed\n", bdev->name);
SPDK_DEBUGLOG(SPDK_LOG_BDEV_RAID, "raid_bdev_config->raid_bdev %p\n",
raid_bdev_config->raid_bdev);
raid_bdev = raid_bdev_config->raid_bdev;
if (!raid_bdev) {
rc = raid_bdev_create(raid_bdev_config, &raid_bdev);
if (rc != 0) {
SPDK_ERRLOG("Failed to create raid bdev for bdev '%s'\n", bdev->name);
spdk_bdev_module_release_bdev(bdev);
spdk_bdev_close(desc);
return -1;
}
raid_bdev_config->raid_bdev = raid_bdev;
}
assert(raid_bdev->state != RAID_BDEV_STATE_ONLINE);
assert(base_bdev_slot < raid_bdev->num_base_bdevs);
raid_bdev->base_bdev_info[base_bdev_slot].base_bdev = bdev;
raid_bdev->base_bdev_info[base_bdev_slot].base_bdev_desc = desc;
raid_bdev->num_base_bdevs_discovered++;
rc = raid_bdev_alloc_base_bdev_resource(raid_bdev, bdev, base_bdev_slot);
if (rc != 0) {
SPDK_ERRLOG("Failed to allocate resource for bdev '%s'\n", bdev->name);
raid_bdev_cleanup(raid_bdev);
return -1;
}
assert(raid_bdev->num_base_bdevs_discovered <= raid_bdev->num_base_bdevs);