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examples/hello_blob: use io_unit_size instead of page_size

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Blobstore now supports 512B reads/writes to blobs, if the
backing device is formatted for 512B LBAs.  The hello_blob
example app was never updated to account for this - so when
running against a backing device with 512B LBAs, it would
fail since it was only reading/writing 1 blob io_unit (512B)
but was comparing a page size (4KB).

Clean up a typo too while we're here.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I6cfeeff1c160a24d4c10b68b9dd93717ed79f212

Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/450069
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
Jim Harris 2019-04-03 05:50:46 -07:00 committed by Changpeng Liu
parent 4fad4b86dd
commit 1a2de82456
1 changed files with 9 additions and 9 deletions
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18
examples/blob/hello_world/hello_blob.c
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@ -51,7 +51,7 @@ struct hello_context_t {
struct spdk_io_channel *channel;
uint8_t *read_buff;
uint8_t *write_buff;
uint64_t page_size;
uint64_t io_unit_size;
int rc;
};
@ -159,7 +159,7 @@ read_complete(void *arg1, int bserrno)
/* Now let's make sure things match. */
match_res = memcmp(hello_context->write_buff, hello_context->read_buff,
hello_context->page_size);
hello_context->io_unit_size);
if (match_res) {
unload_bs(hello_context, "Error in data compare", -1);
return;
@ -179,7 +179,7 @@ read_blob(struct hello_context_t *hello_context)
{
SPDK_NOTICELOG("entry\n");
hello_context->read_buff = spdk_malloc(hello_context->page_size,
hello_context->read_buff = spdk_malloc(hello_context->io_unit_size,
0x1000, NULL, SPDK_ENV_LCORE_ID_ANY,
SPDK_MALLOC_DMA);
if (hello_context->read_buff == NULL) {
@ -223,9 +223,9 @@ blob_write(struct hello_context_t *hello_context)
/*
* Buffers for data transfer need to be allocated via SPDK. We will
* tranfer 1 page of 4K aligned data at offset 0 in the blob.
* transfer 1 io_unit of 4K aligned data at offset 0 in the blob.
*/
hello_context->write_buff = spdk_malloc(hello_context->page_size,
hello_context->write_buff = spdk_malloc(hello_context->io_unit_size,
0x1000, NULL, SPDK_ENV_LCORE_ID_ANY,
SPDK_MALLOC_DMA);
if (hello_context->write_buff == NULL) {
@ -233,7 +233,7 @@ blob_write(struct hello_context_t *hello_context)
-ENOMEM);
return;
}
memset(hello_context->write_buff, 0x5a, hello_context->page_size);
memset(hello_context->write_buff, 0x5a, hello_context->io_unit_size);
/* Now we have to allocate a channel. */
hello_context->channel = spdk_bs_alloc_io_channel(hello_context->bs);
@ -243,7 +243,7 @@ blob_write(struct hello_context_t *hello_context)
return;
}
/* Let's perform the write, 1 page at offset 0. */
/* Let's perform the write, 1 io_unit at offset 0. */
spdk_blob_io_write(hello_context->blob, hello_context->channel,
hello_context->write_buff,
0, 1, write_complete, hello_context);
@ -379,10 +379,10 @@ bs_init_complete(void *cb_arg, struct spdk_blob_store *bs,
hello_context->bs = bs;
SPDK_NOTICELOG("blobstore: %p\n", hello_context->bs);
/*
* We will use the page size in allocating buffers, etc., later
* We will use the io_unit size in allocating buffers, etc., later
* so we'll just save it in out context buffer here.
*/
hello_context->page_size = spdk_bs_get_page_size(hello_context->bs);
hello_context->io_unit_size = spdk_bs_get_io_unit_size(hello_context->bs);
/*
* The blostore has been initialized, let's create a blob.