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module/raid: io metadata support

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* generic metadata support for raid modules
* raid is not created when metadata formats for base bdevs differ

Signed-off-by: Krzysztof Smolinski <krzysztof.smolinski@intel.com>
Change-Id: Ifaf9cfc4f2472c3820da1070deda758c5334edb2
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13549
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
This commit is contained in:
Krzysztof Smolinski 2022-10-19 15:02:47 +02:00 committed by Tomasz Zawadzki
parent 33833272ea
commit 357c038ce0
2 changed files with 52 additions and 0 deletions
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47
module/bdev/raid/bdev_raid.c
View File

@ -1027,6 +1027,47 @@ raid_bdev_create(const char *name, uint32_t strip_size, uint8_t num_base_bdevs,
return 0;
}
/*
* brief:
* Check underlying block devices against support for metadata. Do not configure
* md support when parameters from block devices are inconsistent.
* params:
* raid_bdev - pointer to raid bdev
* returns:
* 0 - The raid bdev md parameters were successfully configured.
* non zero - Failed to configure md.
*/
static int
raid_bdev_configure_md(struct raid_bdev *raid_bdev)
{
struct spdk_bdev *base_bdev;
uint8_t i;
for (i = 0; i < raid_bdev->num_base_bdevs; i++) {
base_bdev = raid_bdev->base_bdev_info[i].bdev;
if (i == 0) {
raid_bdev->bdev.md_len = spdk_bdev_get_md_size(base_bdev);
raid_bdev->bdev.md_interleave = spdk_bdev_is_md_interleaved(base_bdev);
raid_bdev->bdev.dif_type = spdk_bdev_get_dif_type(base_bdev);
raid_bdev->bdev.dif_is_head_of_md = spdk_bdev_is_dif_head_of_md(base_bdev);
raid_bdev->bdev.dif_check_flags = base_bdev->dif_check_flags;
continue;
}
if (raid_bdev->bdev.md_len != spdk_bdev_get_md_size(base_bdev) ||
raid_bdev->bdev.md_interleave != spdk_bdev_is_md_interleaved(base_bdev) ||
raid_bdev->bdev.dif_type != spdk_bdev_get_dif_type(base_bdev) ||
raid_bdev->bdev.dif_is_head_of_md != spdk_bdev_is_dif_head_of_md(base_bdev) ||
raid_bdev->bdev.dif_check_flags != base_bdev->dif_check_flags) {
SPDK_ERRLOG("base bdevs are configured with different metadata formats\n");
return -EPERM;
}
}
return 0;
}
/*
* brief:
* If raid bdev config is complete, then only register the raid bdev to
@ -1075,6 +1116,12 @@ raid_bdev_configure(struct raid_bdev *raid_bdev)
raid_bdev_gen = &raid_bdev->bdev;
raid_bdev_gen->blocklen = blocklen;
rc = raid_bdev_configure_md(raid_bdev);
if (rc != 0) {
SPDK_ERRLOG("raid metadata configuration failed\n");
return rc;
}
rc = raid_bdev->module->start(raid_bdev);
if (rc != 0) {
SPDK_ERRLOG("raid module startup callback failed\n");

5
test/unit/lib/bdev/raid/bdev_raid.c/bdev_raid_ut.c
View File

@ -115,6 +115,11 @@ DEFINE_STUB(spdk_bdev_queue_io_wait, int, (struct spdk_bdev *bdev, struct spdk_i
DEFINE_STUB(spdk_bdev_get_memory_domains, int, (struct spdk_bdev *bdev,
struct spdk_memory_domain **domains, int array_size), 0);
DEFINE_STUB(spdk_bdev_get_name, const char *, (const struct spdk_bdev *bdev), "test_bdev");
DEFINE_STUB(spdk_bdev_get_md_size, uint32_t, (const struct spdk_bdev *bdev), 0);
DEFINE_STUB(spdk_bdev_is_md_interleaved, bool, (const struct spdk_bdev *bdev), false);
DEFINE_STUB(spdk_bdev_get_dif_type, enum spdk_dif_type, (const struct spdk_bdev *bdev),
SPDK_DIF_DISABLE);
DEFINE_STUB(spdk_bdev_is_dif_head_of_md, bool, (const struct spdk_bdev *bdev), false);
struct spdk_io_channel *
spdk_bdev_get_io_channel(struct spdk_bdev_desc *desc)