diff options
| author | Eric Blake <eblake@redhat.com> | 2020-03-24 12:42:31 -0500 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2020-03-26 14:44:33 +0100 |
| commit | bb40ebce2cb0bd4bf37968074d43d5a864fb6dee (patch) | |
| tree | 4c86973f9b228e34c65b1b480ef6fbd578ee101a | |
| parent | a951a631b96cefbe2636fed33a583ca05e9132ba (diff) | |
qcow2: List autoclear bit names in header
The feature table is supposed to advertise the name of all feature
bits that we support; however, we forgot to update the table for
autoclear bits. While at it, move the table to read-only memory in
code, and tweak the qcow2 spec to name the second autoclear bit.
Update iotests that are affected by the longer header length.
Fixes: 88ddffae
Fixes: 93c24936
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200324174233.1622067-3-eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
| -rw-r--r-- | block/qcow2.c | 12 | ||||
| -rw-r--r-- | docs/interop/qcow2.txt | 3 | ||||
| -rw-r--r-- | tests/qemu-iotests/031.out | 8 | ||||
| -rw-r--r-- | tests/qemu-iotests/036.out | 4 | ||||
| -rw-r--r-- | tests/qemu-iotests/061.out | 14 |
5 files changed, 26 insertions, 15 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index b565cf912e..b74cbeb047 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -2825,7 +2825,7 @@ int qcow2_update_header(BlockDriverState *bs) /* Feature table */ if (s->qcow_version >= 3) { - Qcow2Feature features[] = { + static const Qcow2Feature features[] = { { .type = QCOW2_FEAT_TYPE_INCOMPATIBLE, .bit = QCOW2_INCOMPAT_DIRTY_BITNR, @@ -2846,6 +2846,16 @@ int qcow2_update_header(BlockDriverState *bs) .bit = QCOW2_COMPAT_LAZY_REFCOUNTS_BITNR, .name = "lazy refcounts", }, + { + .type = QCOW2_FEAT_TYPE_AUTOCLEAR, + .bit = QCOW2_AUTOCLEAR_BITMAPS_BITNR, + .name = "bitmaps", + }, + { + .type = QCOW2_FEAT_TYPE_AUTOCLEAR, + .bit = QCOW2_AUTOCLEAR_DATA_FILE_RAW_BITNR, + .name = "raw external data", + }, }; ret = header_ext_add(buf, QCOW2_EXT_MAGIC_FEATURE_TABLE, diff --git a/docs/interop/qcow2.txt b/docs/interop/qcow2.txt index 5597e24474..640e0eca40 100644 --- a/docs/interop/qcow2.txt +++ b/docs/interop/qcow2.txt @@ -143,7 +143,8 @@ the next fields through header_length. bit is unset, the bitmaps extension data must be considered inconsistent. - Bit 1: If this bit is set, the external data file can + Bit 1: Raw external data bit + If this bit is set, the external data file can be read as a consistent standalone raw image without looking at the qcow2 metadata. diff --git a/tests/qemu-iotests/031.out b/tests/qemu-iotests/031.out index d535e407bc..46f97c5a4e 100644 --- a/tests/qemu-iotests/031.out +++ b/tests/qemu-iotests/031.out @@ -117,7 +117,7 @@ header_length 104 Header extension: magic 0x6803f857 -length 192 +length 288 data <binary> Header extension: @@ -150,7 +150,7 @@ header_length 104 Header extension: magic 0x6803f857 -length 192 +length 288 data <binary> Header extension: @@ -164,7 +164,7 @@ No errors were found on the image. magic 0x514649fb version 3 -backing_file_offset 0x178 +backing_file_offset 0x1d8 backing_file_size 0x17 cluster_bits 16 size 67108864 @@ -188,7 +188,7 @@ data 'host_device' Header extension: magic 0x6803f857 -length 192 +length 288 data <binary> Header extension: diff --git a/tests/qemu-iotests/036.out b/tests/qemu-iotests/036.out index 0b52b934e1..23b699ce06 100644 --- a/tests/qemu-iotests/036.out +++ b/tests/qemu-iotests/036.out @@ -26,7 +26,7 @@ compatible_features [] autoclear_features [63] Header extension: magic 0x6803f857 -length 192 +length 288 data <binary> @@ -38,7 +38,7 @@ compatible_features [] autoclear_features [] Header extension: magic 0x6803f857 -length 192 +length 288 data <binary> *** done diff --git a/tests/qemu-iotests/061.out b/tests/qemu-iotests/061.out index 8b3091a412..413cc4e0f4 100644 --- a/tests/qemu-iotests/061.out +++ b/tests/qemu-iotests/061.out @@ -26,7 +26,7 @@ header_length 104 Header extension: magic 0x6803f857 -length 192 +length 288 data <binary> magic 0x514649fb @@ -84,7 +84,7 @@ header_length 104 Header extension: magic 0x6803f857 -length 192 +length 288 data <binary> magic 0x514649fb @@ -140,7 +140,7 @@ header_length 104 Header extension: magic 0x6803f857 -length 192 +length 288 data <binary> ERROR cluster 5 refcount=0 reference=1 @@ -195,7 +195,7 @@ header_length 104 Header extension: magic 0x6803f857 -length 192 +length 288 data <binary> magic 0x514649fb @@ -264,7 +264,7 @@ header_length 104 Header extension: magic 0x6803f857 -length 192 +length 288 data <binary> read 65536/65536 bytes at offset 44040192 @@ -298,7 +298,7 @@ header_length 104 Header extension: magic 0x6803f857 -length 192 +length 288 data <binary> ERROR cluster 5 refcount=0 reference=1 @@ -327,7 +327,7 @@ header_length 104 Header extension: magic 0x6803f857 -length 192 +length 288 data <binary> read 131072/131072 bytes at offset 0 |