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authorStefan Hajnoczi <stefanha@redhat.com>2022-11-01 13:49:33 -0400
committerStefan Hajnoczi <stefanha@redhat.com>2022-11-01 13:49:33 -0400
commita11f65ec1b8adcb012b89c92819cbda4dc25aaf1 (patch)
tree1406abf12cdd824bf29c93518c7bf93551bd13af /block/blkio.c
parent0d37413c639d8f467fc92c86a1ed54ecdba5220d (diff)
parent6c32fc0df9cd901add75618c831fb26a9eb742cb (diff)
Merge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu into staging
Pull request Note that we're still discussing "block/blkio: Make driver nvme-io_uring take a "path" instead of a "filename"". I have sent the pull request now so everything is ready for the soft freeze tomorrow if we decide to go ahead with the patch. # -----BEGIN PGP SIGNATURE----- # # iQEzBAABCAAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAmNgGQkACgkQnKSrs4Gr # c8hLFgf/dnszoHO02hjoJCN2LPAxDalyYKzog+ZU8U5VdzJn2gione1jVlf3Xb0l # mhTgrioSbKLKXavGZTSwWUki/xRgCJMtG3m07EFmMsLX0QiSOIyzLr0DslQawYdZ # FlXyCCyAVTUILz7oUXBqORlfTKsGPHms6nlXQYhitTOsDbPyqbT9nNPKAlfGkqfj # Pwn+oWJmjLC0aARpcrB1bXCMbqQrtZGh4bBgfIXRUJmprWqk227bkFvXNCuXU16x # PC4oH552+6nyQyRxGpHc3o1W/8gqlxU9DTBb5arDUQaDvsDTKVkuGe2HdDI7knAT # /m57/BFVUnA35SYOxX+0piiEbawI6Q== # =UWL7 # -----END PGP SIGNATURE----- # gpg: Signature made Mon 31 Oct 2022 14:50:49 EDT # gpg: using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8 # gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [ultimate] # gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" [ultimate] # Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8 * tag 'block-pull-request' of https://gitlab.com/stefanha/qemu: block/blkio: Make driver nvme-io_uring take a "path" instead of a "filename" block/blkio: Tolerate device size changes block/blkio: Add virtio-blk-vfio-pci BlockDriver Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block/blkio.c')
-rw-r--r--block/blkio.c47
1 files changed, 43 insertions, 4 deletions
diff --git a/block/blkio.c b/block/blkio.c
index 82f26eedd2..620fab28a7 100644
--- a/block/blkio.c
+++ b/block/blkio.c
@@ -25,6 +25,7 @@
*/
#define DRIVER_IO_URING "io_uring"
#define DRIVER_NVME_IO_URING "nvme-io_uring"
+#define DRIVER_VIRTIO_BLK_VFIO_PCI "virtio-blk-vfio-pci"
#define DRIVER_VIRTIO_BLK_VHOST_USER "virtio-blk-vhost-user"
#define DRIVER_VIRTIO_BLK_VHOST_VDPA "virtio-blk-vhost-vdpa"
@@ -639,12 +640,17 @@ static int blkio_io_uring_open(BlockDriverState *bs, QDict *options, int flags,
static int blkio_nvme_io_uring(BlockDriverState *bs, QDict *options, int flags,
Error **errp)
{
- const char *filename = qdict_get_str(options, "filename");
+ const char *path = qdict_get_try_str(options, "path");
BDRVBlkioState *s = bs->opaque;
int ret;
- ret = blkio_set_str(s->blkio, "path", filename);
- qdict_del(options, "filename");
+ if (!path) {
+ error_setg(errp, "missing 'path' option");
+ return -EINVAL;
+ }
+
+ ret = blkio_set_str(s->blkio, "path", path);
+ qdict_del(options, "path");
if (ret < 0) {
error_setg_errno(errp, -ret, "failed to set path: %s",
blkio_get_error_msg());
@@ -704,6 +710,8 @@ static int blkio_file_open(BlockDriverState *bs, QDict *options, int flags,
ret = blkio_io_uring_open(bs, options, flags, errp);
} else if (strcmp(blkio_driver, DRIVER_NVME_IO_URING) == 0) {
ret = blkio_nvme_io_uring(bs, options, flags, errp);
+ } else if (strcmp(blkio_driver, DRIVER_VIRTIO_BLK_VFIO_PCI) == 0) {
+ ret = blkio_virtio_blk_common_open(bs, options, flags, errp);
} else if (strcmp(blkio_driver, DRIVER_VIRTIO_BLK_VHOST_USER) == 0) {
ret = blkio_virtio_blk_common_open(bs, options, flags, errp);
} else if (strcmp(blkio_driver, DRIVER_VIRTIO_BLK_VHOST_VDPA) == 0) {
@@ -845,6 +853,31 @@ static int64_t blkio_getlength(BlockDriverState *bs)
return capacity;
}
+static int coroutine_fn blkio_truncate(BlockDriverState *bs, int64_t offset,
+ bool exact, PreallocMode prealloc,
+ BdrvRequestFlags flags, Error **errp)
+{
+ int64_t current_length;
+
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_str(prealloc));
+ return -ENOTSUP;
+ }
+
+ current_length = blkio_getlength(bs);
+
+ if (offset > current_length) {
+ error_setg(errp, "Cannot grow device");
+ return -EINVAL;
+ } else if (exact && offset != current_length) {
+ error_setg(errp, "Cannot resize device");
+ return -ENOTSUP;
+ }
+
+ return 0;
+}
+
static int blkio_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
{
return 0;
@@ -960,10 +993,12 @@ static void blkio_refresh_limits(BlockDriverState *bs, Error **errp)
{ \
.format_name = name, \
.protocol_name = name, \
+ .has_variable_length = true, \
.instance_size = sizeof(BDRVBlkioState), \
.bdrv_file_open = blkio_file_open, \
.bdrv_close = blkio_close, \
.bdrv_getlength = blkio_getlength, \
+ .bdrv_co_truncate = blkio_truncate, \
.bdrv_get_info = blkio_get_info, \
.bdrv_attach_aio_context = blkio_attach_aio_context, \
.bdrv_detach_aio_context = blkio_detach_aio_context, \
@@ -986,7 +1021,10 @@ static BlockDriver bdrv_io_uring = BLKIO_DRIVER(
static BlockDriver bdrv_nvme_io_uring = BLKIO_DRIVER(
DRIVER_NVME_IO_URING,
- .bdrv_needs_filename = true,
+);
+
+static BlockDriver bdrv_virtio_blk_vfio_pci = BLKIO_DRIVER(
+ DRIVER_VIRTIO_BLK_VFIO_PCI
);
static BlockDriver bdrv_virtio_blk_vhost_user = BLKIO_DRIVER(
@@ -1001,6 +1039,7 @@ static void bdrv_blkio_init(void)
{
bdrv_register(&bdrv_io_uring);
bdrv_register(&bdrv_nvme_io_uring);
+ bdrv_register(&bdrv_virtio_blk_vfio_pci);
bdrv_register(&bdrv_virtio_blk_vhost_user);
bdrv_register(&bdrv_virtio_blk_vhost_vdpa);
}