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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Browse Source 
Block layer patches:

- Make truncate operations asynchronous (so that preallocation in
  blockdev-create doesn't block the main loop any more)
- usb-storage: Add rerror/werror properties
- nvme: Add num_queues property
- qemu-img convert: Copy offloading fixes (including data corruption fix)
- qcow2: Fix cluster leak on temporary write error
- Use byte-based functions instead of bdrv_co_readv/writev()
- Various small fixes and cleanups

# gpg: Signature made Fri 29 Jun 2018 15:08:34 BST
# gpg:                using RSA key 7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (29 commits)
  block: Remove unused sector-based vectored I/O
  vhdx: Switch to byte-based calls
  replication: Switch to byte-based calls
  qcow: Switch to a byte-based driver
  qcow: Switch qcow_co_writev to byte-based calls
  qcow: Switch qcow_co_readv to byte-based calls
  qcow: Switch get_cluster_offset to be byte-based
  parallels: Switch to byte-based calls
  file-posix: Fix EINTR handling
  iscsi: Don't blindly use designator length in response for memcpy
  qcow2: Fix src_offset in copy offloading
  file-posix: Implement co versions of discard/flush
  qemu-iotests: Test qcow2 not leaking clusters on write error
  qcow2: Free allocated clusters on write error
  qemu-iotests: Update 026.out.nocache reference output
  block/crypto: Simplify block_crypto_{open,create}_opts_init()
  block: Move request tracking to children in copy offloading
  qcow2: Remove dead check on !ret
  file-posix: Make .bdrv_co_truncate asynchronous
  block: Use tracked request for truncate
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell
2018-06-29 18:29:15 +01:00
parent b2866c2915 583c99d393
commit ce59ecc411
36 changed files with 685 additions and 634 deletions
Download Patch File Download Diff File Expand all files Collapse all files
block.c
+1 -63
View File
@@ -725,7 +725,7 @@ static int find_image_format(BlockBackend *file, const char *filename,
* Set the current 'total_sectors' value
* Return 0 on success, -errno on error.
*/
static int refresh_total_sectors(BlockDriverState *bs, int64_t hint)
int refresh_total_sectors(BlockDriverState *bs, int64_t hint)
{
BlockDriver *drv = bs->drv;
@@ -2226,16 +2226,6 @@ static void bdrv_parent_cb_change_media(BlockDriverState *bs, bool load)
}
}
static void bdrv_parent_cb_resize(BlockDriverState *bs)
{
BdrvChild *c;
QLIST_FOREACH(c, &bs->parents, next_parent) {
if (c->role->resize) {
c->role->resize(c);
}
}
}
/*
* Sets the backing file link of a BDS. A new reference is created; callers
* which don't need their own reference any more must call bdrv_unref().
@@ -3785,58 +3775,6 @@ exit:
return ret;
}
/**
* Truncate file to 'offset' bytes (needed only for file protocols)
*/
int bdrv_truncate(BdrvChild *child, int64_t offset, PreallocMode prealloc,
Error **errp)
{
BlockDriverState *bs = child->bs;
BlockDriver *drv = bs->drv;
int ret;
assert(child->perm & BLK_PERM_RESIZE);
/* if bs->drv == NULL, bs is closed, so there's nothing to do here */
if (!drv) {
error_setg(errp, "No medium inserted");
return -ENOMEDIUM;
}
if (offset < 0) {
error_setg(errp, "Image size cannot be negative");
return -EINVAL;
}
if (!drv->bdrv_truncate) {
if (bs->file && drv->is_filter) {
return bdrv_truncate(bs->file, offset, prealloc, errp);
}
error_setg(errp, "Image format driver does not support resize");
return -ENOTSUP;
}
if (bs->read_only) {
error_setg(errp, "Image is read-only");
return -EACCES;
}
assert(!(bs->open_flags & BDRV_O_INACTIVE));
ret = drv->bdrv_truncate(bs, offset, prealloc, errp);
if (ret < 0) {
return ret;
}
ret = refresh_total_sectors(bs, offset >> BDRV_SECTOR_BITS);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not refresh total sector count");
} else {
offset = bs->total_sectors * BDRV_SECTOR_SIZE;
}
bdrv_dirty_bitmap_truncate(bs, offset);
bdrv_parent_cb_resize(bs);
atomic_inc(&bs->write_gen);
return ret;
}
/**
* Length of a allocated file in bytes. Sparse files are counted by actual
* allocated space. Return < 0 if error or unknown.
block/copy-on-read.c
+4 -4
View File
@@ -80,10 +80,10 @@ static int64_t cor_getlength(BlockDriverState *bs)
}
static int cor_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
static int coroutine_fn cor_co_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
{
return bdrv_truncate(bs->file, offset, prealloc, errp);
return bdrv_co_truncate(bs->file, offset, prealloc, errp);
}
@@ -147,7 +147,7 @@ BlockDriver bdrv_copy_on_read = {
.bdrv_child_perm = cor_child_perm,
.bdrv_getlength = cor_getlength,
.bdrv_truncate = cor_truncate,
.bdrv_co_truncate = cor_co_truncate,
.bdrv_co_preadv = cor_co_preadv,
.bdrv_co_pwritev = cor_co_pwritev,
block/crypto.c
+21 -91
View File
@@ -148,108 +148,36 @@ static QemuOptsList block_crypto_create_opts_luks = {
QCryptoBlockOpenOptions *
block_crypto_open_opts_init(QCryptoBlockFormat format,
QDict *opts,
Error **errp)
block_crypto_open_opts_init(QDict *opts, Error **errp)
{
Visitor *v;
QCryptoBlockOpenOptions *ret = NULL;
Error *local_err = NULL;
QCryptoBlockOpenOptions *ret;
ret = g_new0(QCryptoBlockOpenOptions, 1);
ret->format = format;
v = qobject_input_visitor_new_flat_confused(opts, &local_err);
if (local_err) {
goto out;
v = qobject_input_visitor_new_flat_confused(opts, errp);
if (!v) {
return NULL;
}
visit_start_struct(v, NULL, NULL, 0, &local_err);
if (local_err) {
goto out;
}
visit_type_QCryptoBlockOpenOptions(v, NULL, &ret, errp);
switch (format) {
case Q_CRYPTO_BLOCK_FORMAT_LUKS:
visit_type_QCryptoBlockOptionsLUKS_members(
v, &ret->u.luks, &local_err);
break;
case Q_CRYPTO_BLOCK_FORMAT_QCOW:
visit_type_QCryptoBlockOptionsQCow_members(
v, &ret->u.qcow, &local_err);
break;
default:
error_setg(&local_err, "Unsupported block format %d", format);
break;
}
if (!local_err) {
visit_check_struct(v, &local_err);
}
visit_end_struct(v, NULL);
out:
if (local_err) {
error_propagate(errp, local_err);
qapi_free_QCryptoBlockOpenOptions(ret);
ret = NULL;
}
visit_free(v);
return ret;
}
QCryptoBlockCreateOptions *
block_crypto_create_opts_init(QCryptoBlockFormat format,
QDict *opts,
Error **errp)
block_crypto_create_opts_init(QDict *opts, Error **errp)
{
Visitor *v;
QCryptoBlockCreateOptions *ret = NULL;
Error *local_err = NULL;
QCryptoBlockCreateOptions *ret;
ret = g_new0(QCryptoBlockCreateOptions, 1);
ret->format = format;
v = qobject_input_visitor_new_flat_confused(opts, &local_err);
if (local_err) {
goto out;
v = qobject_input_visitor_new_flat_confused(opts, errp);
if (!v) {
return NULL;
}
visit_start_struct(v, NULL, NULL, 0, &local_err);
if (local_err) {
goto out;
}
visit_type_QCryptoBlockCreateOptions(v, NULL, &ret, errp);
switch (format) {
case Q_CRYPTO_BLOCK_FORMAT_LUKS:
visit_type_QCryptoBlockCreateOptionsLUKS_members(
v, &ret->u.luks, &local_err);
break;
case Q_CRYPTO_BLOCK_FORMAT_QCOW:
visit_type_QCryptoBlockOptionsQCow_members(
v, &ret->u.qcow, &local_err);
break;
default:
error_setg(&local_err, "Unsupported block format %d", format);
break;
}
if (!local_err) {
visit_check_struct(v, &local_err);
}
visit_end_struct(v, NULL);
out:
if (local_err) {
error_propagate(errp, local_err);
qapi_free_QCryptoBlockCreateOptions(ret);
ret = NULL;
}
visit_free(v);
return ret;
}
@@ -287,8 +215,9 @@ static int block_crypto_open_generic(QCryptoBlockFormat format,
}
cryptoopts = qemu_opts_to_qdict(opts, NULL);
qdict_put_str(cryptoopts, "format", QCryptoBlockFormat_str(format));
open_opts = block_crypto_open_opts_init(format, cryptoopts, errp);
open_opts = block_crypto_open_opts_init(cryptoopts, errp);
if (!open_opts) {
goto cleanup;
}
@@ -357,8 +286,9 @@ static int block_crypto_co_create_generic(BlockDriverState *bs,
return ret;
}
static int block_crypto_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
static int coroutine_fn
block_crypto_co_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
{
BlockCrypto *crypto = bs->opaque;
uint64_t payload_offset =
@@ -371,7 +301,7 @@ static int block_crypto_truncate(BlockDriverState *bs, int64_t offset,
offset += payload_offset;
return bdrv_truncate(bs->file, offset, prealloc, errp);
return bdrv_co_truncate(bs->file, offset, prealloc, errp);
}
static void block_crypto_close(BlockDriverState *bs)
@@ -611,8 +541,8 @@ static int coroutine_fn block_crypto_co_create_opts_luks(const char *filename,
&block_crypto_create_opts_luks,
true);
create_opts = block_crypto_create_opts_init(Q_CRYPTO_BLOCK_FORMAT_LUKS,
cryptoopts, errp);
qdict_put_str(cryptoopts, "format", "luks");
create_opts = block_crypto_create_opts_init(cryptoopts, errp);
if (!create_opts) {
ret = -EINVAL;
goto fail;
@@ -700,7 +630,7 @@ BlockDriver bdrv_crypto_luks = {
.bdrv_child_perm = bdrv_format_default_perms,
.bdrv_co_create = block_crypto_co_create_luks,
.bdrv_co_create_opts = block_crypto_co_create_opts_luks,
.bdrv_truncate = block_crypto_truncate,
.bdrv_co_truncate = block_crypto_co_truncate,
.create_opts = &block_crypto_create_opts_luks,
.bdrv_reopen_prepare = block_crypto_reopen_prepare,
block/crypto.h
+2 -6
View File
@@ -89,13 +89,9 @@
}
QCryptoBlockCreateOptions *
block_crypto_create_opts_init(QCryptoBlockFormat format,
QDict *opts,
Error **errp);
block_crypto_create_opts_init(QDict *opts, Error **errp);
QCryptoBlockOpenOptions *
block_crypto_open_opts_init(QCryptoBlockFormat format,
QDict *opts,
Error **errp);
block_crypto_open_opts_init(QDict *opts, Error **errp);
#endif /* BLOCK_CRYPTO_H__ */
block/file-posix.c
+190 -177
View File
File diff suppressed because it is too large Load Diff
block/file-win32.c
+3 -3
View File
@@ -467,8 +467,8 @@ static void raw_close(BlockDriverState *bs)
}
}
static int raw_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
static int coroutine_fn raw_co_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
{
BDRVRawState *s = bs->opaque;
LONG low, high;
@@ -640,7 +640,7 @@ BlockDriver bdrv_file = {
.bdrv_aio_pwritev = raw_aio_pwritev,
.bdrv_aio_flush = raw_aio_flush,
.bdrv_truncate = raw_truncate,
.bdrv_co_truncate = raw_co_truncate,
.bdrv_getlength = raw_getlength,
.bdrv_get_allocated_file_size
= raw_get_allocated_file_size,
block/gluster.c
+8 -6
View File
@@ -1177,8 +1177,10 @@ static coroutine_fn int qemu_gluster_co_rw(BlockDriverState *bs,
return acb.ret;
}
static int qemu_gluster_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
static coroutine_fn int qemu_gluster_co_truncate(BlockDriverState *bs,
int64_t offset,
PreallocMode prealloc,
Error **errp)
{
BDRVGlusterState *s = bs->opaque;
return qemu_gluster_do_truncate(s->fd, offset, prealloc, errp);
@@ -1499,7 +1501,7 @@ static BlockDriver bdrv_gluster = {
.bdrv_co_create_opts = qemu_gluster_co_create_opts,
.bdrv_getlength = qemu_gluster_getlength,
.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
.bdrv_truncate = qemu_gluster_truncate,
.bdrv_co_truncate = qemu_gluster_co_truncate,
.bdrv_co_readv = qemu_gluster_co_readv,
.bdrv_co_writev = qemu_gluster_co_writev,
.bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk,
@@ -1528,7 +1530,7 @@ static BlockDriver bdrv_gluster_tcp = {
.bdrv_co_create_opts = qemu_gluster_co_create_opts,
.bdrv_getlength = qemu_gluster_getlength,
.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
.bdrv_truncate = qemu_gluster_truncate,
.bdrv_co_truncate = qemu_gluster_co_truncate,
.bdrv_co_readv = qemu_gluster_co_readv,
.bdrv_co_writev = qemu_gluster_co_writev,
.bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk,
@@ -1557,7 +1559,7 @@ static BlockDriver bdrv_gluster_unix = {
.bdrv_co_create_opts = qemu_gluster_co_create_opts,
.bdrv_getlength = qemu_gluster_getlength,
.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
.bdrv_truncate = qemu_gluster_truncate,
.bdrv_co_truncate = qemu_gluster_co_truncate,
.bdrv_co_readv = qemu_gluster_co_readv,
.bdrv_co_writev = qemu_gluster_co_writev,
.bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk,
@@ -1592,7 +1594,7 @@ static BlockDriver bdrv_gluster_rdma = {
.bdrv_co_create_opts = qemu_gluster_co_create_opts,
.bdrv_getlength = qemu_gluster_getlength,
.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
.bdrv_truncate = qemu_gluster_truncate,
.bdrv_co_truncate = qemu_gluster_co_truncate,
.bdrv_co_readv = qemu_gluster_co_readv,
.bdrv_co_writev = qemu_gluster_co_writev,
.bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk,
block/io.c
+157 -62
View File
@@ -1429,24 +1429,6 @@ int coroutine_fn bdrv_co_preadv(BdrvChild *child,
return ret;
}
static int coroutine_fn bdrv_co_do_readv(BdrvChild *child,
int64_t sector_num, int nb_sectors, QEMUIOVector *qiov,
BdrvRequestFlags flags)
{
if (nb_sectors < 0 || nb_sectors > BDRV_REQUEST_MAX_SECTORS) {
return -EINVAL;
}
return bdrv_co_preadv(child, sector_num << BDRV_SECTOR_BITS,
nb_sectors << BDRV_SECTOR_BITS, qiov, flags);
}
int coroutine_fn bdrv_co_readv(BdrvChild *child, int64_t sector_num,
int nb_sectors, QEMUIOVector *qiov)
{
return bdrv_co_do_readv(child, sector_num, nb_sectors, qiov, 0);
}
static int coroutine_fn bdrv_co_do_pwrite_zeroes(BlockDriverState *bs,
int64_t offset, int bytes, BdrvRequestFlags flags)
{
@@ -1889,24 +1871,6 @@ out:
return ret;
}
static int coroutine_fn bdrv_co_do_writev(BdrvChild *child,
int64_t sector_num, int nb_sectors, QEMUIOVector *qiov,
BdrvRequestFlags flags)
{
if (nb_sectors < 0 || nb_sectors > BDRV_REQUEST_MAX_SECTORS) {
return -EINVAL;
}
return bdrv_co_pwritev(child, sector_num << BDRV_SECTOR_BITS,
nb_sectors << BDRV_SECTOR_BITS, qiov, flags);
}
int coroutine_fn bdrv_co_writev(BdrvChild *child, int64_t sector_num,
int nb_sectors, QEMUIOVector *qiov)
{
return bdrv_co_do_writev(child, sector_num, nb_sectors, qiov, 0);
}
int coroutine_fn bdrv_co_pwrite_zeroes(BdrvChild *child, int64_t offset,
int bytes, BdrvRequestFlags flags)
{
@@ -2932,6 +2896,9 @@ static int coroutine_fn bdrv_co_copy_range_internal(BdrvChild *src,
BdrvRequestFlags flags,
bool recurse_src)
{
BdrvTrackedRequest src_req, dst_req;
BlockDriverState *src_bs = src->bs;
BlockDriverState *dst_bs = dst->bs;
int ret;
if (!src || !dst || !src->bs || !dst->bs) {
@@ -2955,17 +2922,31 @@ static int coroutine_fn bdrv_co_copy_range_internal(BdrvChild *src,
|| src->bs->encrypted || dst->bs->encrypted) {
return -ENOTSUP;
}
bdrv_inc_in_flight(src_bs);
bdrv_inc_in_flight(dst_bs);
tracked_request_begin(&src_req, src_bs, src_offset,
bytes, BDRV_TRACKED_READ);
tracked_request_begin(&dst_req, dst_bs, dst_offset,
bytes, BDRV_TRACKED_WRITE);
wait_serialising_requests(&src_req);
wait_serialising_requests(&dst_req);
if (recurse_src) {
return src->bs->drv->bdrv_co_copy_range_from(src->bs,
src, src_offset,
dst, dst_offset,
bytes, flags);
ret = src->bs->drv->bdrv_co_copy_range_from(src->bs,
src, src_offset,
dst, dst_offset,
bytes, flags);
} else {
return dst->bs->drv->bdrv_co_copy_range_to(dst->bs,
src, src_offset,
dst, dst_offset,
bytes, flags);
ret = dst->bs->drv->bdrv_co_copy_range_to(dst->bs,
src, src_offset,
dst, dst_offset,
bytes, flags);
}
tracked_request_end(&src_req);
tracked_request_end(&dst_req);
bdrv_dec_in_flight(src_bs);
bdrv_dec_in_flight(dst_bs);
return ret;
}
/* Copy range from @src to @dst.
@@ -2996,27 +2977,141 @@ int coroutine_fn bdrv_co_copy_range(BdrvChild *src, uint64_t src_offset,
BdrvChild *dst, uint64_t dst_offset,
uint64_t bytes, BdrvRequestFlags flags)
{
BdrvTrackedRequest src_req, dst_req;
BlockDriverState *src_bs = src->bs;
BlockDriverState *dst_bs = dst->bs;
return bdrv_co_copy_range_from(src, src_offset,
dst, dst_offset,
bytes, flags);
}
static void bdrv_parent_cb_resize(BlockDriverState *bs)
{
BdrvChild *c;
QLIST_FOREACH(c, &bs->parents, next_parent) {
if (c->role->resize) {
c->role->resize(c);
}
}
}
/**
* Truncate file to 'offset' bytes (needed only for file protocols)
*/
int coroutine_fn bdrv_co_truncate(BdrvChild *child, int64_t offset,
PreallocMode prealloc, Error **errp)
{
BlockDriverState *bs = child->bs;
BlockDriver *drv = bs->drv;
BdrvTrackedRequest req;
int64_t old_size, new_bytes;
int ret;
bdrv_inc_in_flight(src_bs);
bdrv_inc_in_flight(dst_bs);
tracked_request_begin(&src_req, src_bs, src_offset,
bytes, BDRV_TRACKED_READ);
tracked_request_begin(&dst_req, dst_bs, dst_offset,
bytes, BDRV_TRACKED_WRITE);
assert(child->perm & BLK_PERM_RESIZE);
wait_serialising_requests(&src_req);
wait_serialising_requests(&dst_req);
ret = bdrv_co_copy_range_from(src, src_offset,
dst, dst_offset,
bytes, flags);
/* if bs->drv == NULL, bs is closed, so there's nothing to do here */
if (!drv) {
error_setg(errp, "No medium inserted");
return -ENOMEDIUM;
}
if (offset < 0) {
error_setg(errp, "Image size cannot be negative");
return -EINVAL;
}
old_size = bdrv_getlength(bs);
if (old_size < 0) {
error_setg_errno(errp, -old_size, "Failed to get old image size");
return old_size;
}
if (offset > old_size) {
new_bytes = offset - old_size;
} else {
new_bytes = 0;
}
bdrv_inc_in_flight(bs);
tracked_request_begin(&req, bs, offset, new_bytes, BDRV_TRACKED_TRUNCATE);
/* If we are growing the image and potentially using preallocation for the
* new area, we need to make sure that no write requests are made to it
* concurrently or they might be overwritten by preallocation. */
if (new_bytes) {
mark_request_serialising(&req, 1);
wait_serialising_requests(&req);
}
if (!drv->bdrv_co_truncate) {
if (bs->file && drv->is_filter) {
ret = bdrv_co_truncate(bs->file, offset, prealloc, errp);
goto out;
}
error_setg(errp, "Image format driver does not support resize");
ret = -ENOTSUP;
goto out;
}
if (bs->read_only) {
error_setg(errp, "Image is read-only");
ret = -EACCES;
goto out;
}
assert(!(bs->open_flags & BDRV_O_INACTIVE));
ret = drv->bdrv_co_truncate(bs, offset, prealloc, errp);
if (ret < 0) {
goto out;
}
ret = refresh_total_sectors(bs, offset >> BDRV_SECTOR_BITS);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not refresh total sector count");
} else {
offset = bs->total_sectors * BDRV_SECTOR_SIZE;
}
bdrv_dirty_bitmap_truncate(bs, offset);
bdrv_parent_cb_resize(bs);
atomic_inc(&bs->write_gen);
out:
tracked_request_end(&req);
bdrv_dec_in_flight(bs);
tracked_request_end(&src_req);
tracked_request_end(&dst_req);
bdrv_dec_in_flight(src_bs);
bdrv_dec_in_flight(dst_bs);
return ret;
}
typedef struct TruncateCo {
BdrvChild *child;
int64_t offset;
PreallocMode prealloc;
Error **errp;
int ret;
} TruncateCo;
static void coroutine_fn bdrv_truncate_co_entry(void *opaque)
{
TruncateCo *tco = opaque;
tco->ret = bdrv_co_truncate(tco->child, tco->offset, tco->prealloc,
tco->errp);
}
int bdrv_truncate(BdrvChild *child, int64_t offset, PreallocMode prealloc,
Error **errp)
{
Coroutine *co;
TruncateCo tco = {
.child = child,
.offset = offset,
.prealloc = prealloc,
.errp = errp,
.ret = NOT_DONE,
};
if (qemu_in_coroutine()) {
/* Fast-path if already in coroutine context */
bdrv_truncate_co_entry(&tco);
} else {
co = qemu_coroutine_create(bdrv_truncate_co_entry, &tco);
qemu_coroutine_enter(co);
BDRV_POLL_WHILE(child->bs, tco.ret == NOT_DONE);
}
return tco.ret;
}
block/iscsi.c
+5 -5
View File
@@ -2085,8 +2085,8 @@ static void iscsi_reopen_commit(BDRVReopenState *reopen_state)
}
}
static int iscsi_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
static int coroutine_fn iscsi_co_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
{
IscsiLun *iscsilun = bs->opaque;
Error *local_err = NULL;
@@ -2226,7 +2226,7 @@ static void iscsi_populate_target_desc(unsigned char *desc, IscsiLun *lun)
desc[5] = (dd->designator_type & 0xF)
| ((dd->association & 3) << 4);
desc[7] = dd->designator_length;
memcpy(desc + 8, dd->designator, dd->designator_length);
memcpy(desc + 8, dd->designator, MIN(dd->designator_length, 20));
desc[28] = 0;
desc[29] = (lun->block_size >> 16) & 0xFF;
@@ -2431,7 +2431,7 @@ static BlockDriver bdrv_iscsi = {
.bdrv_getlength = iscsi_getlength,
.bdrv_get_info = iscsi_get_info,
.bdrv_truncate = iscsi_truncate,
.bdrv_co_truncate = iscsi_co_truncate,
.bdrv_refresh_limits = iscsi_refresh_limits,
.bdrv_co_block_status = iscsi_co_block_status,
@@ -2468,7 +2468,7 @@ static BlockDriver bdrv_iser = {
.bdrv_getlength = iscsi_getlength,
.bdrv_get_info = iscsi_get_info,
.bdrv_truncate = iscsi_truncate,
.bdrv_co_truncate = iscsi_co_truncate,
.bdrv_refresh_limits = iscsi_refresh_limits,
.bdrv_co_block_status = iscsi_co_block_status,
block/nfs.c
+4 -3
View File
@@ -743,8 +743,9 @@ static int64_t nfs_get_allocated_file_size(BlockDriverState *bs)
return (task.ret < 0 ? task.ret : st.st_blocks * 512);
}
static int nfs_file_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
static int coroutine_fn
nfs_file_co_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
{
NFSClient *client = bs->opaque;
int ret;
@@ -873,7 +874,7 @@ static BlockDriver bdrv_nfs = {
.bdrv_has_zero_init = nfs_has_zero_init,
.bdrv_get_allocated_file_size = nfs_get_allocated_file_size,
.bdrv_truncate = nfs_file_truncate,
.bdrv_co_truncate = nfs_file_co_truncate,
.bdrv_file_open = nfs_file_open,
.bdrv_close = nfs_file_close,
block/parallels.c
+10 -6
View File
@@ -227,14 +227,15 @@ static int64_t allocate_clusters(BlockDriverState *bs, int64_t sector_num,
};
qemu_iovec_init_external(&qiov, &iov, 1);
ret = bdrv_co_readv(bs->backing, idx * s->tracks, nb_cow_sectors,
&qiov);
ret = bdrv_co_preadv(bs->backing, idx * s->tracks * BDRV_SECTOR_SIZE,
nb_cow_bytes, &qiov, 0);
if (ret < 0) {
qemu_vfree(iov.iov_base);
return ret;
}
ret = bdrv_co_writev(bs->file, s->data_end, nb_cow_sectors, &qiov);
ret = bdrv_co_pwritev(bs->file, s->data_end * BDRV_SECTOR_SIZE,
nb_cow_bytes, &qiov, 0);
qemu_vfree(iov.iov_base);
if (ret < 0) {
return ret;
@@ -340,7 +341,8 @@ static coroutine_fn int parallels_co_writev(BlockDriverState *bs,
qemu_iovec_reset(&hd_qiov);
qemu_iovec_concat(&hd_qiov, qiov, bytes_done, nbytes);
ret = bdrv_co_writev(bs->file, position, n, &hd_qiov);
ret = bdrv_co_pwritev(bs->file, position * BDRV_SECTOR_SIZE, nbytes,
&hd_qiov, 0);
if (ret < 0) {
break;
}
@@ -379,7 +381,8 @@ static coroutine_fn int parallels_co_readv(BlockDriverState *bs,
if (position < 0) {
if (bs->backing) {
ret = bdrv_co_readv(bs->backing, sector_num, n, &hd_qiov);
ret = bdrv_co_preadv(bs->backing, sector_num * BDRV_SECTOR_SIZE,
nbytes, &hd_qiov, 0);
if (ret < 0) {
break;
}
@@ -387,7 +390,8 @@ static coroutine_fn int parallels_co_readv(BlockDriverState *bs,
qemu_iovec_memset(&hd_qiov, 0, 0, nbytes);
}
} else {
ret = bdrv_co_readv(bs->file, position, n, &hd_qiov);
ret = bdrv_co_preadv(bs->file, position * BDRV_SECTOR_SIZE, nbytes,
&hd_qiov, 0);
if (ret < 0) {
break;
}
block/qcow.c
+68 -67
View File
@@ -70,7 +70,6 @@ typedef struct QCowHeader {
typedef struct BDRVQcowState {
int cluster_bits;
int cluster_size;
int cluster_sectors;
int l2_bits;
int l2_size;
unsigned int l1_size;
@@ -203,9 +202,8 @@ static int qcow_open(BlockDriverState *bs, QDict *options, int flags,
ret = -EINVAL;
goto fail;
}
qdict_del(encryptopts, "format");
crypto_opts = block_crypto_open_opts_init(
Q_CRYPTO_BLOCK_FORMAT_QCOW, encryptopts, errp);
qdict_put_str(encryptopts, "format", "qcow");
crypto_opts = block_crypto_open_opts_init(encryptopts, errp);
if (!crypto_opts) {
ret = -EINVAL;
goto fail;
@@ -236,7 +234,6 @@ static int qcow_open(BlockDriverState *bs, QDict *options, int flags,
}
s->cluster_bits = header.cluster_bits;
s->cluster_size = 1 << s->cluster_bits;
s->cluster_sectors = 1 << (s->cluster_bits - 9);
s->l2_bits = header.l2_bits;
s->l2_size = 1 << s->l2_bits;
bs->total_sectors = header.size / 512;
@@ -346,8 +343,8 @@ static int qcow_reopen_prepare(BDRVReopenState *state,
*
* 0 to not allocate.
*
* 1 to allocate a normal cluster (for sector indexes 'n_start' to
* 'n_end')
* 1 to allocate a normal cluster (for sector-aligned byte offsets 'n_start'
* to 'n_end' within the cluster)
*
* 2 to allocate a compressed cluster of size
* 'compressed_size'. 'compressed_size' must be > 0 and <
@@ -441,9 +438,10 @@ static int get_cluster_offset(BlockDriverState *bs,
if (!allocate)
return 0;
BLKDBG_EVENT(bs->file, BLKDBG_CLUSTER_ALLOC);
assert(QEMU_IS_ALIGNED(n_start | n_end, BDRV_SECTOR_SIZE));
/* allocate a new cluster */
if ((cluster_offset & QCOW_OFLAG_COMPRESSED) &&
(n_end - n_start) < s->cluster_sectors) {
(n_end - n_start) < s->cluster_size) {
/* if the cluster is already compressed, we must
decompress it in the case it is not completely
overwritten */
@@ -481,16 +479,15 @@ static int get_cluster_offset(BlockDriverState *bs,
/* if encrypted, we must initialize the cluster
content which won't be written */
if (bs->encrypted &&
(n_end - n_start) < s->cluster_sectors) {
uint64_t start_sect;
(n_end - n_start) < s->cluster_size) {
uint64_t start_offset;
assert(s->crypto);
start_sect = (offset & ~(s->cluster_size - 1)) >> 9;
for(i = 0; i < s->cluster_sectors; i++) {
start_offset = offset & ~(s->cluster_size - 1);
for (i = 0; i < s->cluster_size; i += BDRV_SECTOR_SIZE) {
if (i < n_start || i >= n_end) {
memset(s->cluster_data, 0x00, 512);
memset(s->cluster_data, 0x00, BDRV_SECTOR_SIZE);
if (qcrypto_block_encrypt(s->crypto,
(start_sect + i) *
BDRV_SECTOR_SIZE,
start_offset + i,
s->cluster_data,
BDRV_SECTOR_SIZE,
NULL) < 0) {
@@ -498,8 +495,9 @@ static int get_cluster_offset(BlockDriverState *bs,
}
BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO);
ret = bdrv_pwrite(bs->file,
cluster_offset + i * 512,
s->cluster_data, 512);
cluster_offset + i,
s->cluster_data,
BDRV_SECTOR_SIZE);
if (ret < 0) {
return ret;
}
@@ -613,11 +611,21 @@ static int decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset)
return 0;
}
static coroutine_fn int qcow_co_readv(BlockDriverState *bs, int64_t sector_num,
int nb_sectors, QEMUIOVector *qiov)
static void qcow_refresh_limits(BlockDriverState *bs, Error **errp)
{
/* At least encrypted images require 512-byte alignment. Apply the
* limit universally, rather than just on encrypted images, as
* it's easier to let the block layer handle rounding than to
* audit this code further. */
bs->bl.request_alignment = BDRV_SECTOR_SIZE;
}
static coroutine_fn int qcow_co_preadv(BlockDriverState *bs, uint64_t offset,
uint64_t bytes, QEMUIOVector *qiov,
int flags)
{
BDRVQcowState *s = bs->opaque;
int index_in_cluster;
int offset_in_cluster;
int ret = 0, n;
uint64_t cluster_offset;
struct iovec hd_iov;
@@ -625,6 +633,7 @@ static coroutine_fn int qcow_co_readv(BlockDriverState *bs, int64_t sector_num,
uint8_t *buf;
void *orig_buf;
assert(!flags);
if (qiov->niov > 1) {
buf = orig_buf = qemu_try_blockalign(bs, qiov->size);
if (buf == NULL) {
@@ -637,36 +646,35 @@ static coroutine_fn int qcow_co_readv(BlockDriverState *bs, int64_t sector_num,
qemu_co_mutex_lock(&s->lock);
while (nb_sectors != 0) {
while (bytes != 0) {
/* prepare next request */
ret = get_cluster_offset(bs, sector_num << 9,
0, 0, 0, 0, &cluster_offset);
ret = get_cluster_offset(bs, offset, 0, 0, 0, 0, &cluster_offset);
if (ret < 0) {
break;
}
index_in_cluster = sector_num & (s->cluster_sectors - 1);
n = s->cluster_sectors - index_in_cluster;
if (n > nb_sectors) {
n = nb_sectors;
offset_in_cluster = offset & (s->cluster_size - 1);
n = s->cluster_size - offset_in_cluster;
if (n > bytes) {
n = bytes;
}
if (!cluster_offset) {
if (bs->backing) {
/* read from the base image */
hd_iov.iov_base = (void *)buf;
hd_iov.iov_len = n * 512;
hd_iov.iov_len = n;
qemu_iovec_init_external(&hd_qiov, &hd_iov, 1);
qemu_co_mutex_unlock(&s->lock);
/* qcow2 emits this on bs->file instead of bs->backing */
BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO);
ret = bdrv_co_readv(bs->backing, sector_num, n, &hd_qiov);
ret = bdrv_co_preadv(bs->backing, offset, n, &hd_qiov, 0);
qemu_co_mutex_lock(&s->lock);
if (ret < 0) {
break;
}
} else {
/* Note: in this case, no need to wait */
memset(buf, 0, 512 * n);
memset(buf, 0, n);
}
} else if (cluster_offset & QCOW_OFLAG_COMPRESSED) {
/* add AIO support for compressed blocks ? */
@@ -674,21 +682,19 @@ static coroutine_fn int qcow_co_readv(BlockDriverState *bs, int64_t sector_num,
ret = -EIO;
break;
}
memcpy(buf,
s->cluster_cache + index_in_cluster * 512, 512 * n);
memcpy(buf, s->cluster_cache + offset_in_cluster, n);
} else {
if ((cluster_offset & 511) != 0) {
ret = -EIO;
break;
}
hd_iov.iov_base = (void *)buf;
hd_iov.iov_len = n * 512;
hd_iov.iov_len = n;
qemu_iovec_init_external(&hd_qiov, &hd_iov, 1);
qemu_co_mutex_unlock(&s->lock);
BLKDBG_EVENT(bs->file, BLKDBG_READ_AIO);
ret = bdrv_co_readv(bs->file,
(cluster_offset >> 9) + index_in_cluster,
n, &hd_qiov);
ret = bdrv_co_preadv(bs->file, cluster_offset + offset_in_cluster,
n, &hd_qiov, 0);
qemu_co_mutex_lock(&s->lock);
if (ret < 0) {
break;
@@ -696,8 +702,7 @@ static coroutine_fn int qcow_co_readv(BlockDriverState *bs, int64_t sector_num,
if (bs->encrypted) {
assert(s->crypto);
if (qcrypto_block_decrypt(s->crypto,
sector_num * BDRV_SECTOR_SIZE, buf,
n * BDRV_SECTOR_SIZE, NULL) < 0) {
offset, buf, n, NULL) < 0) {
ret = -EIO;
break;
}
@@ -705,9 +710,9 @@ static coroutine_fn int qcow_co_readv(BlockDriverState *bs, int64_t sector_num,
}
ret = 0;
nb_sectors -= n;
sector_num += n;
buf += n * 512;
bytes -= n;
offset += n;
buf += n;
}
qemu_co_mutex_unlock(&s->lock);
@@ -720,12 +725,12 @@ static coroutine_fn int qcow_co_readv(BlockDriverState *bs, int64_t sector_num,
return ret;
}
static coroutine_fn int qcow_co_writev(BlockDriverState *bs, int64_t sector_num,
int nb_sectors, QEMUIOVector *qiov,
int flags)
static coroutine_fn int qcow_co_pwritev(BlockDriverState *bs, uint64_t offset,
uint64_t bytes, QEMUIOVector *qiov,
int flags)
{
BDRVQcowState *s = bs->opaque;
int index_in_cluster;
int offset_in_cluster;
uint64_t cluster_offset;
int ret = 0, n;
struct iovec hd_iov;
@@ -751,16 +756,14 @@ static coroutine_fn int qcow_co_writev(BlockDriverState *bs, int64_t sector_num,
qemu_co_mutex_lock(&s->lock);
while (nb_sectors != 0) {
index_in_cluster = sector_num & (s->cluster_sectors - 1);
n = s->cluster_sectors - index_in_cluster;
if (n > nb_sectors) {
n = nb_sectors;
while (bytes != 0) {
offset_in_cluster = offset & (s->cluster_size - 1);
n = s->cluster_size - offset_in_cluster;
if (n > bytes) {
n = bytes;
}
ret = get_cluster_offset(bs, sector_num << 9, 1, 0,
index_in_cluster,
index_in_cluster + n, &cluster_offset);
ret = get_cluster_offset(bs, offset, 1, 0, offset_in_cluster,
offset_in_cluster + n, &cluster_offset);
if (ret < 0) {
break;
}
@@ -770,30 +773,28 @@ static coroutine_fn int qcow_co_writev(BlockDriverState *bs, int64_t sector_num,
}
if (bs->encrypted) {
assert(s->crypto);
if (qcrypto_block_encrypt(s->crypto, sector_num * BDRV_SECTOR_SIZE,
buf, n * BDRV_SECTOR_SIZE, NULL) < 0) {
if (qcrypto_block_encrypt(s->crypto, offset, buf, n, NULL) < 0) {
ret = -EIO;
break;
}
}
hd_iov.iov_base = (void *)buf;
hd_iov.iov_len = n * 512;
hd_iov.iov_len = n;
qemu_iovec_init_external(&hd_qiov, &hd_iov, 1);
qemu_co_mutex_unlock(&s->lock);
BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO);
ret = bdrv_co_writev(bs->file,
(cluster_offset >> 9) + index_in_cluster,
n, &hd_qiov);
ret = bdrv_co_pwritev(bs->file, cluster_offset + offset_in_cluster,
n, &hd_qiov, 0);
qemu_co_mutex_lock(&s->lock);
if (ret < 0) {
break;
}
ret = 0;
nb_sectors -= n;
sector_num += n;
buf += n * 512;
bytes -= n;
offset += n;
buf += n;
}
qemu_co_mutex_unlock(&s->lock);
@@ -1108,8 +1109,7 @@ qcow_co_pwritev_compressed(BlockDriverState *bs, uint64_t offset,
if (ret != Z_STREAM_END || out_len >= s->cluster_size) {
/* could not compress: write normal cluster */
ret = qcow_co_writev(bs, offset >> BDRV_SECTOR_BITS,
bytes >> BDRV_SECTOR_BITS, qiov, 0);
ret = qcow_co_pwritev(bs, offset, bytes, qiov, 0);
if (ret < 0) {
goto fail;
}
@@ -1194,9 +1194,10 @@ static BlockDriver bdrv_qcow = {
.bdrv_co_create_opts = qcow_co_create_opts,
.bdrv_has_zero_init = bdrv_has_zero_init_1,
.supports_backing = true,
.bdrv_refresh_limits = qcow_refresh_limits,
.bdrv_co_readv = qcow_co_readv,
.bdrv_co_writev = qcow_co_writev,
.bdrv_co_preadv = qcow_co_preadv,
.bdrv_co_pwritev = qcow_co_pwritev,
.bdrv_co_block_status = qcow_co_block_status,
.bdrv_make_empty = qcow_make_empty,
block/qcow2-cluster.c
+11
View File
@@ -994,6 +994,17 @@ err:
return ret;
}
/**
* Frees the allocated clusters because the request failed and they won't
* actually be linked.
*/
void qcow2_alloc_cluster_abort(BlockDriverState *bs, QCowL2Meta *m)
{
BDRVQcow2State *s = bs->opaque;
qcow2_free_clusters(bs, m->alloc_offset, m->nb_clusters << s->cluster_bits,
QCOW2_DISCARD_NEVER);
}
/*
* Returns the number of contiguous clusters that can be used for an allocating
* write, but require COW to be performed (this includes yet unallocated space,
block/qcow2.c
+60 -80
View File
@@ -1040,9 +1040,8 @@ static int qcow2_update_options_prepare(BlockDriverState *bs,
ret = -EINVAL;
goto fail;
}
qdict_del(encryptopts, "format");
r->crypto_opts = block_crypto_open_opts_init(
Q_CRYPTO_BLOCK_FORMAT_QCOW, encryptopts, errp);
qdict_put_str(encryptopts, "format", "qcow");
r->crypto_opts = block_crypto_open_opts_init(encryptopts, errp);
break;
case QCOW_CRYPT_LUKS:
@@ -1053,9 +1052,8 @@ static int qcow2_update_options_prepare(BlockDriverState *bs,
ret = -EINVAL;
goto fail;
}
qdict_del(encryptopts, "format");
r->crypto_opts = block_crypto_open_opts_init(
Q_CRYPTO_BLOCK_FORMAT_LUKS, encryptopts, errp);
qdict_put_str(encryptopts, "format", "luks");
r->crypto_opts = block_crypto_open_opts_init(encryptopts, errp);
break;
default:
@@ -1772,11 +1770,13 @@ static coroutine_fn int qcow2_handle_l2meta(BlockDriverState *bs,
while (l2meta != NULL) {
QCowL2Meta *next;
if (!ret && link_l2) {
if (link_l2) {
ret = qcow2_alloc_cluster_link_l2(bs, l2meta);
if (ret) {
goto out;
}
} else {
qcow2_alloc_cluster_abort(bs, l2meta);
}
/* Take the request off the list of running requests */
@@ -2521,15 +2521,6 @@ static int qcow2_set_up_encryption(BlockDriverState *bs,
return ret;
}
typedef struct PreallocCo {
BlockDriverState *bs;
uint64_t offset;
uint64_t new_length;
int ret;
} PreallocCo;
/**
* Preallocates metadata structures for data clusters between @offset (in the
* guest disk) and @new_length (which is thus generally the new guest disk
@@ -2537,21 +2528,15 @@ typedef struct PreallocCo {
*
* Returns: 0 on success, -errno on failure.
*/
static void coroutine_fn preallocate_co(void *opaque)
static int coroutine_fn preallocate_co(BlockDriverState *bs, uint64_t offset,
uint64_t new_length)
{
PreallocCo *params = opaque;
BlockDriverState *bs = params->bs;
uint64_t offset = params->offset;
uint64_t new_length = params->new_length;
BDRVQcow2State *s = bs->opaque;
uint64_t bytes;
uint64_t host_offset = 0;
unsigned int cur_bytes;
int ret;
QCowL2Meta *meta;
qemu_co_mutex_lock(&s->lock);
assert(offset <= new_length);
bytes = new_length - offset;
@@ -2560,7 +2545,7 @@ static void coroutine_fn preallocate_co(void *opaque)
ret = qcow2_alloc_cluster_offset(bs, offset, &cur_bytes,
&host_offset, &meta);
if (ret < 0) {
goto done;
return ret;
}
while (meta) {
@@ -2570,7 +2555,7 @@ static void coroutine_fn preallocate_co(void *opaque)
if (ret < 0) {
qcow2_free_any_clusters(bs, meta->alloc_offset,
meta->nb_clusters, QCOW2_DISCARD_NEVER);
goto done;
return ret;
}
/* There are no dependent requests, but we need to remove our
@@ -2597,35 +2582,11 @@ static void coroutine_fn preallocate_co(void *opaque)
ret = bdrv_pwrite(bs->file, (host_offset + cur_bytes) - 1,
&data, 1);
if (ret < 0) {
goto done;
return ret;
}
}
ret = 0;
done:
qemu_co_mutex_unlock(&s->lock);
params->ret = ret;
}
static int preallocate(BlockDriverState *bs,
uint64_t offset, uint64_t new_length)
{
PreallocCo params = {
.bs = bs,
.offset = offset,
.new_length = new_length,
.ret = -EINPROGRESS,
};
if (qemu_in_coroutine()) {
preallocate_co(&params);
} else {
Coroutine *co = qemu_coroutine_create(preallocate_co, &params);
bdrv_coroutine_enter(bs, co);
BDRV_POLL_WHILE(bs, params.ret == -EINPROGRESS);
}
return params.ret;
return 0;
}
/* qcow2_refcount_metadata_size:
@@ -3041,7 +3002,11 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp)
/* And if we're supposed to preallocate metadata, do that now */
if (qcow2_opts->preallocation != PREALLOC_MODE_OFF) {
ret = preallocate(blk_bs(blk), 0, qcow2_opts->size);
BDRVQcow2State *s = blk_bs(blk)->opaque;
qemu_co_mutex_lock(&s->lock);
ret = preallocate_co(blk_bs(blk), 0, qcow2_opts->size);
qemu_co_mutex_unlock(&s->lock);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not preallocate metadata");
goto out;
@@ -3422,6 +3387,7 @@ qcow2_co_copy_range_to(BlockDriverState *bs,
}
bytes -= cur_bytes;
src_offset += cur_bytes;
dst_offset += cur_bytes;
}
ret = 0;
@@ -3437,8 +3403,8 @@ fail:
return ret;
}
static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
static int coroutine_fn qcow2_co_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
{
BDRVQcow2State *s = bs->opaque;
uint64_t old_length;
@@ -3458,17 +3424,21 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
return -EINVAL;
}
qemu_co_mutex_lock(&s->lock);
/* cannot proceed if image has snapshots */
if (s->nb_snapshots) {
error_setg(errp, "Can't resize an image which has snapshots");
return -ENOTSUP;
ret = -ENOTSUP;
goto fail;
}
/* cannot proceed if image has bitmaps */
if (s->nb_bitmaps) {
/* TODO: resize bitmaps in the image */
error_setg(errp, "Can't resize an image which has bitmaps");
return -ENOTSUP;
ret = -ENOTSUP;
goto fail;
}
old_length = bs->total_sectors * 512;
@@ -3479,7 +3449,8 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
if (prealloc != PREALLOC_MODE_OFF) {
error_setg(errp,
"Preallocation can't be used for shrinking an image");
return -EINVAL;
ret = -EINVAL;
goto fail;
}
ret = qcow2_cluster_discard(bs, ROUND_UP(offset, s->cluster_size),
@@ -3488,40 +3459,42 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
QCOW2_DISCARD_ALWAYS, true);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to discard cropped clusters");
return ret;
goto fail;
}
ret = qcow2_shrink_l1_table(bs, new_l1_size);
if (ret < 0) {
error_setg_errno(errp, -ret,
"Failed to reduce the number of L2 tables");
return ret;
goto fail;
}
ret = qcow2_shrink_reftable(bs);
if (ret < 0) {
error_setg_errno(errp, -ret,
"Failed to discard unused refblocks");
return ret;
goto fail;
}
old_file_size = bdrv_getlength(bs->file->bs);
if (old_file_size < 0) {
error_setg_errno(errp, -old_file_size,
"Failed to inquire current file length");
return old_file_size;
ret = old_file_size;
goto fail;
}
last_cluster = qcow2_get_last_cluster(bs, old_file_size);
if (last_cluster < 0) {
error_setg_errno(errp, -last_cluster,
"Failed to find the last cluster");
return last_cluster;
ret = last_cluster;
goto fail;
}
if ((last_cluster + 1) * s->cluster_size < old_file_size) {
Error *local_err = NULL;
bdrv_truncate(bs->file, (last_cluster + 1) * s->cluster_size,
PREALLOC_MODE_OFF, &local_err);
bdrv_co_truncate(bs->file, (last_cluster + 1) * s->cluster_size,
PREALLOC_MODE_OFF, &local_err);
if (local_err) {
warn_reportf_err(local_err,
"Failed to truncate the tail of the image: ");
@@ -3531,7 +3504,7 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
ret = qcow2_grow_l1_table(bs, new_l1_size, true);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to grow the L1 table");
return ret;
goto fail;
}
}
@@ -3540,10 +3513,10 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
break;
case PREALLOC_MODE_METADATA:
ret = preallocate(bs, old_length, offset);
ret = preallocate_co(bs, old_length, offset);
if (ret < 0) {
error_setg_errno(errp, -ret, "Preallocation failed");
return ret;
goto fail;
}
break;
@@ -3559,7 +3532,8 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
if (old_file_size < 0) {
error_setg_errno(errp, -old_file_size,
"Failed to inquire current file length");
return old_file_size;
ret = old_file_size;
goto fail;
}
old_file_size = ROUND_UP(old_file_size, s->cluster_size);
@@ -3589,7 +3563,8 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
if (allocation_start < 0) {
error_setg_errno(errp, -allocation_start,
"Failed to resize refcount structures");
return allocation_start;
ret = allocation_start;
goto fail;
}
clusters_allocated = qcow2_alloc_clusters_at(bs, allocation_start,
@@ -3597,7 +3572,8 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
if (clusters_allocated < 0) {
error_setg_errno(errp, -clusters_allocated,
"Failed to allocate data clusters");
return -clusters_allocated;
ret = clusters_allocated;
goto fail;
}
assert(clusters_allocated == nb_new_data_clusters);
@@ -3605,13 +3581,13 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
/* Allocate the data area */
new_file_size = allocation_start +
nb_new_data_clusters * s->cluster_size;
ret = bdrv_truncate(bs->file, new_file_size, prealloc, errp);
ret = bdrv_co_truncate(bs->file, new_file_size, prealloc, errp);
if (ret < 0) {
error_prepend(errp, "Failed to resize underlying file: ");
qcow2_free_clusters(bs, allocation_start,
nb_new_data_clusters * s->cluster_size,
QCOW2_DISCARD_OTHER);
return ret;
goto fail;
}
/* Create the necessary L2 entries */
@@ -3634,7 +3610,7 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
qcow2_free_clusters(bs, host_offset,
nb_new_data_clusters * s->cluster_size,
QCOW2_DISCARD_OTHER);
return ret;
goto fail;
}
guest_offset += nb_clusters * s->cluster_size;
@@ -3650,11 +3626,11 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
if (prealloc != PREALLOC_MODE_OFF) {
/* Flush metadata before actually changing the image size */
ret = bdrv_flush(bs);
ret = qcow2_write_caches(bs);
if (ret < 0) {
error_setg_errno(errp, -ret,
"Failed to flush the preallocated area to disk");
return ret;
goto fail;
}
}
@@ -3664,11 +3640,14 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
&offset, sizeof(uint64_t));
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to update the image size");
return ret;
goto fail;
}
s->l1_vm_state_index = new_l1_size;
return 0;
ret = 0;
fail:
qemu_co_mutex_unlock(&s->lock);
return ret;
}
/* XXX: put compressed sectors first, then all the cluster aligned
@@ -3692,7 +3671,8 @@ qcow2_co_pwritev_compressed(BlockDriverState *bs, uint64_t offset,
if (cluster_offset < 0) {
return cluster_offset;
}
return bdrv_truncate(bs->file, cluster_offset, PREALLOC_MODE_OFF, NULL);
return bdrv_co_truncate(bs->file, cluster_offset, PREALLOC_MODE_OFF,
NULL);
}
if (offset_into_cluster(s, offset)) {
@@ -4696,7 +4676,7 @@ BlockDriver bdrv_qcow2 = {
.bdrv_co_pdiscard = qcow2_co_pdiscard,
.bdrv_co_copy_range_from = qcow2_co_copy_range_from,
.bdrv_co_copy_range_to = qcow2_co_copy_range_to,
.bdrv_truncate = qcow2_truncate,
.bdrv_co_truncate = qcow2_co_truncate,
.bdrv_co_pwritev_compressed = qcow2_co_pwritev_compressed,
.bdrv_make_empty = qcow2_make_empty,
block/qcow2.h
+1
View File
@@ -614,6 +614,7 @@ uint64_t qcow2_alloc_compressed_cluster_offset(BlockDriverState *bs,
int compressed_size);
int qcow2_alloc_cluster_link_l2(BlockDriverState *bs, QCowL2Meta *m);
void qcow2_alloc_cluster_abort(BlockDriverState *bs, QCowL2Meta *m);
int qcow2_cluster_discard(BlockDriverState *bs, uint64_t offset,
uint64_t bytes, enum qcow2_discard_type type,
bool full_discard);
block/qed.c
+5 -3
View File
@@ -1467,8 +1467,10 @@ static int coroutine_fn bdrv_qed_co_pwrite_zeroes(BlockDriverState *bs,
QED_AIOCB_WRITE | QED_AIOCB_ZERO);
}
static int bdrv_qed_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
static int coroutine_fn bdrv_qed_co_truncate(BlockDriverState *bs,
int64_t offset,
PreallocMode prealloc,
Error **errp)
{
BDRVQEDState *s = bs->opaque;
uint64_t old_image_size;
@@ -1678,7 +1680,7 @@ static BlockDriver bdrv_qed = {
.bdrv_co_readv = bdrv_qed_co_readv,
.bdrv_co_writev = bdrv_qed_co_writev,
.bdrv_co_pwrite_zeroes = bdrv_qed_co_pwrite_zeroes,
.bdrv_truncate = bdrv_qed_truncate,
.bdrv_co_truncate = bdrv_qed_co_truncate,
.bdrv_getlength = bdrv_qed_getlength,
.bdrv_get_info = bdrv_qed_get_info,
.bdrv_refresh_limits = bdrv_qed_refresh_limits,
block/raw-format.c
+4 -4
View File
@@ -366,8 +366,8 @@ static void raw_refresh_limits(BlockDriverState *bs, Error **errp)
}
}
static int raw_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
static int coroutine_fn raw_co_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
{
BDRVRawState *s = bs->opaque;
@@ -383,7 +383,7 @@ static int raw_truncate(BlockDriverState *bs, int64_t offset,
s->size = offset;
offset += s->offset;
return bdrv_truncate(bs->file, offset, prealloc, errp);
return bdrv_co_truncate(bs->file, offset, prealloc, errp);
}
static void raw_eject(BlockDriverState *bs, bool eject_flag)
@@ -545,7 +545,7 @@ BlockDriver bdrv_raw = {
.bdrv_co_block_status = &raw_co_block_status,
.bdrv_co_copy_range_from = &raw_co_copy_range_from,
.bdrv_co_copy_range_to = &raw_co_copy_range_to,
.bdrv_truncate = &raw_truncate,
.bdrv_co_truncate = &raw_co_truncate,
.bdrv_getlength = &raw_getlength,
.has_variable_length = true,
.bdrv_measure = &raw_measure,
block/rbd.c
+5 -3
View File
@@ -990,8 +990,10 @@ static int64_t qemu_rbd_getlength(BlockDriverState *bs)
return info.size;
}
static int qemu_rbd_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
static int coroutine_fn qemu_rbd_co_truncate(BlockDriverState *bs,
int64_t offset,
PreallocMode prealloc,
Error **errp)
{
BDRVRBDState *s = bs->opaque;
int r;
@@ -1184,7 +1186,7 @@ static BlockDriver bdrv_rbd = {
.bdrv_get_info = qemu_rbd_getinfo,
.create_opts = &qemu_rbd_create_opts,
.bdrv_getlength = qemu_rbd_getlength,
.bdrv_truncate = qemu_rbd_truncate,
.bdrv_co_truncate = qemu_rbd_co_truncate,
.protocol_name = "rbd",
.bdrv_aio_preadv = qemu_rbd_aio_preadv,
block/replication.c
+8 -6
View File
@@ -246,13 +246,14 @@ static coroutine_fn int replication_co_readv(BlockDriverState *bs,
backup_cow_request_begin(&req, child->bs->job,
sector_num * BDRV_SECTOR_SIZE,
remaining_bytes);
ret = bdrv_co_readv(bs->file, sector_num, remaining_sectors,
qiov);
ret = bdrv_co_preadv(bs->file, sector_num * BDRV_SECTOR_SIZE,
remaining_bytes, qiov, 0);
backup_cow_request_end(&req);
goto out;
}
ret = bdrv_co_readv(bs->file, sector_num, remaining_sectors, qiov);
ret = bdrv_co_preadv(bs->file, sector_num * BDRV_SECTOR_SIZE,
remaining_sectors * BDRV_SECTOR_SIZE, qiov, 0);
out:
return replication_return_value(s, ret);
}
@@ -279,8 +280,8 @@ static coroutine_fn int replication_co_writev(BlockDriverState *bs,
}
if (ret == 0) {
ret = bdrv_co_writev(top, sector_num,
remaining_sectors, qiov);
ret = bdrv_co_pwritev(top, sector_num * BDRV_SECTOR_SIZE,
remaining_sectors * BDRV_SECTOR_SIZE, qiov, 0);
return replication_return_value(s, ret);
}
@@ -306,7 +307,8 @@ static coroutine_fn int replication_co_writev(BlockDriverState *bs,
qemu_iovec_concat(&hd_qiov, qiov, bytes_done, count);
target = ret ? top : base;
ret = bdrv_co_writev(target, sector_num, n, &hd_qiov);
ret = bdrv_co_pwritev(target, sector_num * BDRV_SECTOR_SIZE,
n * BDRV_SECTOR_SIZE, &hd_qiov, 0);
if (ret < 0) {
goto out1;
}
block/sheepdog.c
+6 -6
View File
@@ -2292,8 +2292,8 @@ static int64_t sd_getlength(BlockDriverState *bs)
return s->inode.vdi_size;
}
static int sd_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
static int coroutine_fn sd_co_truncate(BlockDriverState *bs, int64_t offset,
PreallocMode prealloc, Error **errp)
{
BDRVSheepdogState *s = bs->opaque;
int ret, fd;
@@ -2609,7 +2609,7 @@ static coroutine_fn int sd_co_writev(BlockDriverState *bs, int64_t sector_num,
assert(!flags);
if (offset > s->inode.vdi_size) {
ret = sd_truncate(bs, offset, PREALLOC_MODE_OFF, NULL);
ret = sd_co_truncate(bs, offset, PREALLOC_MODE_OFF, NULL);
if (ret < 0) {
return ret;
}
@@ -3231,7 +3231,7 @@ static BlockDriver bdrv_sheepdog = {
.bdrv_has_zero_init = bdrv_has_zero_init_1,
.bdrv_getlength = sd_getlength,
.bdrv_get_allocated_file_size = sd_get_allocated_file_size,
.bdrv_truncate = sd_truncate,
.bdrv_co_truncate = sd_co_truncate,
.bdrv_co_readv = sd_co_readv,
.bdrv_co_writev = sd_co_writev,
@@ -3268,7 +3268,7 @@ static BlockDriver bdrv_sheepdog_tcp = {
.bdrv_has_zero_init = bdrv_has_zero_init_1,
.bdrv_getlength = sd_getlength,
.bdrv_get_allocated_file_size = sd_get_allocated_file_size,
.bdrv_truncate = sd_truncate,
.bdrv_co_truncate = sd_co_truncate,
.bdrv_co_readv = sd_co_readv,
.bdrv_co_writev = sd_co_writev,
@@ -3305,7 +3305,7 @@ static BlockDriver bdrv_sheepdog_unix = {
.bdrv_has_zero_init = bdrv_has_zero_init_1,
.bdrv_getlength = sd_getlength,
.bdrv_get_allocated_file_size = sd_get_allocated_file_size,
.bdrv_truncate = sd_truncate,
.bdrv_co_truncate = sd_co_truncate,
.bdrv_co_readv = sd_co_readv,
.bdrv_co_writev = sd_co_writev,

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