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nbd: fix bdev alignment issue

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When using AIO as the real device of /dev/nbd, we
fail the test due to the alignment issue

Change-Id: I608dfdad1e0cac0beaf438c7a1f115c2d1a9f943
Signed-off-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-on: https://review.gerrithub.io/370233
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
This commit is contained in:
Ziye Yang 2017-07-19 14:37:08 +08:00 committed by Daniel Verkamp
parent b98569fd4f
commit 59d6f04758
1 changed files with 10 additions and 1 deletions
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11
test/lib/bdev/nbd/nbd.c
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@ -46,6 +46,14 @@
static char *g_bdev_name;
static char *g_nbd_name = "/dev/nbd0";
/*
* Used to determine how the I/O buffers should be aligned.
* This alignment will be bumped up for blockdevs that
* require alignment based on block length - for example,
* AIO blockdevs.
*/
static size_t g_min_alignment = 64;
#include "../common.c"
struct nbd_io {
@ -213,7 +221,7 @@ process_request(struct nbd_disk *nbd)
io->payload_size = from_be32(&io->req.len);
spdk_dma_free(io->payload);
io->payload = spdk_dma_malloc(io->payload_size, 64, NULL);
io->payload = spdk_dma_malloc(io->payload_size, g_min_alignment, NULL);
if (io->payload == NULL) {
SPDK_ERRLOG("could not allocate io->payload of size %d\n", io->payload_size);
spdk_app_stop(-1);
@ -365,6 +373,7 @@ nbd_start(void *arg1, void *arg2)
}
g_nbd_disk.bdev = bdev;
g_min_alignment = spdk_max(g_min_alignment, spdk_bdev_get_buf_align(bdev));
g_nbd_disk.ch = spdk_bdev_get_io_channel(g_nbd_disk.bdev_desc);
rc = socketpair(AF_UNIX, SOCK_STREAM, 0, sp);