From: Max Reitz <mreitz@redhat.com>
To: qemu-block@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>,
Peter Maydell <peter.maydell@linaro.org>,
qemu-devel@nongnu.org, Max Reitz <mreitz@redhat.com>
Subject: [PULL 19/34] qcow2: Handle QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC
Date: Tue, 25 Aug 2020 10:32:56 +0200 [thread overview]
Message-ID: <20200825083311.1098442-20-mreitz@redhat.com> (raw)
In-Reply-To: <20200825083311.1098442-1-mreitz@redhat.com>
From: Alberto Garcia <berto@igalia.com>
When dealing with subcluster types there is a new value called
QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC that has no equivalent in
QCow2ClusterType.
This patch handles that value in all places where subcluster types
are processed.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <bf09e2e2439a468a901bb96ace411eed9ee50295.1594396418.git.berto@igalia.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
block/qcow2.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 477d60dd71..60192f1be3 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -2064,7 +2064,8 @@ static int coroutine_fn qcow2_co_block_status(BlockDriverState *bs,
*pnum = bytes;
if ((type == QCOW2_SUBCLUSTER_NORMAL ||
- type == QCOW2_SUBCLUSTER_ZERO_ALLOC) && !s->crypto) {
+ type == QCOW2_SUBCLUSTER_ZERO_ALLOC ||
+ type == QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC) && !s->crypto) {
*map = host_offset;
*file = s->data_file->bs;
status |= BDRV_BLOCK_OFFSET_VALID;
@@ -2072,7 +2073,8 @@ static int coroutine_fn qcow2_co_block_status(BlockDriverState *bs,
if (type == QCOW2_SUBCLUSTER_ZERO_PLAIN ||
type == QCOW2_SUBCLUSTER_ZERO_ALLOC) {
status |= BDRV_BLOCK_ZERO;
- } else if (type != QCOW2_SUBCLUSTER_UNALLOCATED_PLAIN) {
+ } else if (type != QCOW2_SUBCLUSTER_UNALLOCATED_PLAIN &&
+ type != QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC) {
status |= BDRV_BLOCK_DATA;
}
if (s->metadata_preallocation && (status & BDRV_BLOCK_DATA) &&
@@ -2235,6 +2237,7 @@ static coroutine_fn int qcow2_co_preadv_task(BlockDriverState *bs,
g_assert_not_reached();
case QCOW2_SUBCLUSTER_UNALLOCATED_PLAIN:
+ case QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC:
assert(bs->backing); /* otherwise handled in qcow2_co_preadv_part */
BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO);
@@ -2303,7 +2306,8 @@ static coroutine_fn int qcow2_co_preadv_part(BlockDriverState *bs,
if (type == QCOW2_SUBCLUSTER_ZERO_PLAIN ||
type == QCOW2_SUBCLUSTER_ZERO_ALLOC ||
- (type == QCOW2_SUBCLUSTER_UNALLOCATED_PLAIN && !bs->backing))
+ (type == QCOW2_SUBCLUSTER_UNALLOCATED_PLAIN && !bs->backing) ||
+ (type == QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC && !bs->backing))
{
qemu_iovec_memset(qiov, qiov_offset, 0, cur_bytes);
} else {
@@ -3858,6 +3862,7 @@ static coroutine_fn int qcow2_co_pwrite_zeroes(BlockDriverState *bs,
ret = qcow2_get_host_offset(bs, offset, &nr, &off, &type);
if (ret < 0 ||
(type != QCOW2_SUBCLUSTER_UNALLOCATED_PLAIN &&
+ type != QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC &&
type != QCOW2_SUBCLUSTER_ZERO_PLAIN &&
type != QCOW2_SUBCLUSTER_ZERO_ALLOC)) {
qemu_co_mutex_unlock(&s->lock);
@@ -3936,6 +3941,7 @@ qcow2_co_copy_range_from(BlockDriverState *bs,
switch (type) {
case QCOW2_SUBCLUSTER_UNALLOCATED_PLAIN:
+ case QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC:
if (bs->backing && bs->backing->bs) {
int64_t backing_length = bdrv_getlength(bs->backing->bs);
if (src_offset >= backing_length) {
--
2.26.2
next prev parent reply other threads:[~2020-08-25 8:38 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-25 8:32 [PULL 00/34] Block patches Max Reitz
2020-08-25 8:32 ` [PULL 01/34] qcow2: Make Qcow2AioTask store the full host offset Max Reitz
2020-08-25 8:32 ` [PULL 02/34] qcow2: Convert qcow2_get_cluster_offset() into qcow2_get_host_offset() Max Reitz
2020-08-25 8:32 ` [PULL 03/34] qcow2: Add calculate_l2_meta() Max Reitz
2020-08-25 8:32 ` [PULL 04/34] qcow2: Split cluster_needs_cow() out of count_cow_clusters() Max Reitz
2020-08-25 8:32 ` [PULL 05/34] qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied() Max Reitz
2020-08-25 8:32 ` [PULL 06/34] qcow2: Add get_l2_entry() and set_l2_entry() Max Reitz
2020-08-25 8:32 ` [PULL 07/34] qcow2: Document the Extended L2 Entries feature Max Reitz
2020-08-25 8:32 ` [PULL 08/34] qcow2: Add dummy has_subclusters() function Max Reitz
2020-08-25 8:32 ` [PULL 09/34] qcow2: Add subcluster-related fields to BDRVQcow2State Max Reitz
2020-08-25 8:32 ` [PULL 10/34] qcow2: Add offset_to_sc_index() Max Reitz
2020-08-25 8:32 ` [PULL 11/34] qcow2: Add offset_into_subcluster() and size_to_subclusters() Max Reitz
2020-08-25 8:32 ` [PULL 12/34] qcow2: Add l2_entry_size() Max Reitz
2020-08-25 8:32 ` [PULL 13/34] qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap() Max Reitz
2020-08-25 8:32 ` [PULL 14/34] qcow2: Add QCow2SubclusterType and qcow2_get_subcluster_type() Max Reitz
2020-08-25 8:32 ` [PULL 15/34] qcow2: Add qcow2_get_subcluster_range_type() Max Reitz
2020-08-25 8:32 ` [PULL 16/34] qcow2: Add qcow2_cluster_is_allocated() Max Reitz
2020-08-25 8:32 ` [PULL 17/34] qcow2: Add cluster type parameter to qcow2_get_host_offset() Max Reitz
2020-08-25 8:32 ` [PULL 18/34] qcow2: Replace QCOW2_CLUSTER_* with QCOW2_SUBCLUSTER_* Max Reitz
2020-08-25 8:32 ` Max Reitz [this message]
2020-08-25 8:32 ` [PULL 20/34] qcow2: Add subcluster support to calculate_l2_meta() Max Reitz
2020-08-25 8:32 ` [PULL 21/34] qcow2: Add subcluster support to qcow2_get_host_offset() Max Reitz
2020-08-25 8:32 ` [PULL 22/34] qcow2: Add subcluster support to zero_in_l2_slice() Max Reitz
2020-08-25 8:33 ` [PULL 23/34] qcow2: Add subcluster support to discard_in_l2_slice() Max Reitz
2020-08-25 8:33 ` [PULL 24/34] qcow2: Add subcluster support to check_refcounts_l2() Max Reitz
2020-08-25 8:33 ` [PULL 25/34] qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2() Max Reitz
2020-08-25 8:33 ` [PULL 26/34] qcow2: Clear the L2 bitmap when allocating a compressed cluster Max Reitz
2020-08-25 8:33 ` [PULL 27/34] qcow2: Add subcluster support to handle_alloc_space() Max Reitz
2020-08-25 8:33 ` [PULL 28/34] qcow2: Add subcluster support to qcow2_co_pwrite_zeroes() Max Reitz
2020-08-25 8:33 ` [PULL 29/34] qcow2: Add subcluster support to qcow2_measure() Max Reitz
2020-08-25 8:33 ` [PULL 30/34] qcow2: Add prealloc field to QCowL2Meta Max Reitz
2020-08-25 8:33 ` [PULL 31/34] qcow2: Add the 'extended_l2' option and the QCOW2_INCOMPAT_EXTL2 bit Max Reitz
2020-08-25 8:33 ` [PULL 32/34] qcow2: Allow preallocation and backing files if extended_l2 is set Max Reitz
2020-08-25 8:33 ` [PULL 33/34] qcow2: Assert that expand_zero_clusters_in_l1() does not support subclusters Max Reitz
2020-08-25 8:33 ` [PULL 34/34] iotests: Add tests for qcow2 images with extended L2 entries Max Reitz
2020-08-25 14:01 ` [PULL 00/34] Block patches Peter Maydell
2020-08-25 14:22 ` Alberto Garcia
2020-08-25 15:13 ` Max Reitz
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200825083311.1098442-20-mreitz@redhat.com \
--to=mreitz@redhat.com \
--cc=kwolf@redhat.com \
--cc=peter.maydell@linaro.org \
--cc=qemu-block@nongnu.org \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).