diff options
| -rw-r--r-- | block/file-posix.c | 44 | ||||
| -rw-r--r-- | include/block/block_int.h | 1 | ||||
| -rw-r--r-- | qapi/block-core.json | 11 | ||||
| -rw-r--r-- | tests/qemu-iotests/082.out | 16 | ||||
| -rwxr-xr-x | tests/qemu-iotests/106 | 7 | ||||
| -rwxr-xr-x | tests/qemu-iotests/175 | 6 | ||||
| -rwxr-xr-x | tests/qemu-iotests/243 | 7 |
7 files changed, 80 insertions, 12 deletions
diff --git a/block/file-posix.c b/block/file-posix.c index 1989eae85f..8067e238cb 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -30,6 +30,7 @@ #include "block/block_int.h" #include "qemu/module.h" #include "qemu/option.h" +#include "qemu/units.h" #include "trace.h" #include "block/thread-pool.h" #include "qemu/iov.h" @@ -2318,6 +2319,14 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp) if (!file_opts->has_preallocation) { file_opts->preallocation = PREALLOC_MODE_OFF; } + if (!file_opts->has_extent_size_hint) { + file_opts->extent_size_hint = 1 * MiB; + } + if (file_opts->extent_size_hint > UINT32_MAX) { + result = -EINVAL; + error_setg(errp, "Extent size hint is too large"); + goto out; + } /* Create file */ fd = qemu_open(file_opts->filename, O_RDWR | O_CREAT | O_BINARY, 0644); @@ -2375,6 +2384,27 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp) } #endif } +#ifdef FS_IOC_FSSETXATTR + /* + * Try to set the extent size hint. Failure is not fatal, and a warning is + * only printed if the option was explicitly specified. + */ + { + struct fsxattr attr; + result = ioctl(fd, FS_IOC_FSGETXATTR, &attr); + if (result == 0) { + attr.fsx_xflags |= FS_XFLAG_EXTSIZE; + attr.fsx_extsize = file_opts->extent_size_hint; + result = ioctl(fd, FS_IOC_FSSETXATTR, &attr); + } + if (result < 0 && file_opts->has_extent_size_hint && + file_opts->extent_size_hint) + { + warn_report("Failed to set extent size hint: %s", + strerror(errno)); + } + } +#endif /* Resize and potentially preallocate the file to the desired * final size */ @@ -2410,6 +2440,8 @@ static int coroutine_fn raw_co_create_opts(BlockDriver *drv, { BlockdevCreateOptions options; int64_t total_size = 0; + int64_t extent_size_hint = 0; + bool has_extent_size_hint = false; bool nocow = false; PreallocMode prealloc; char *buf = NULL; @@ -2421,6 +2453,11 @@ static int coroutine_fn raw_co_create_opts(BlockDriver *drv, /* Read out options */ total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), BDRV_SECTOR_SIZE); + if (qemu_opt_get(opts, BLOCK_OPT_EXTENT_SIZE_HINT)) { + has_extent_size_hint = true; + extent_size_hint = + qemu_opt_get_size_del(opts, BLOCK_OPT_EXTENT_SIZE_HINT, -1); + } nocow = qemu_opt_get_bool(opts, BLOCK_OPT_NOCOW, false); buf = qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC); prealloc = qapi_enum_parse(&PreallocMode_lookup, buf, @@ -2440,6 +2477,8 @@ static int coroutine_fn raw_co_create_opts(BlockDriver *drv, .preallocation = prealloc, .has_nocow = true, .nocow = nocow, + .has_extent_size_hint = has_extent_size_hint, + .extent_size_hint = extent_size_hint, }, }; return raw_co_create(&options, errp); @@ -2930,6 +2969,11 @@ static QemuOptsList raw_create_opts = { #endif ", full)" }, + { + .name = BLOCK_OPT_EXTENT_SIZE_HINT, + .type = QEMU_OPT_SIZE, + .help = "Extent size hint for the image file, 0 to disable" + }, { /* end of list */ } } }; diff --git a/include/block/block_int.h b/include/block/block_int.h index 3d6cf88592..38dec0275b 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -53,6 +53,7 @@ #define BLOCK_OPT_ADAPTER_TYPE "adapter_type" #define BLOCK_OPT_REDUNDANCY "redundancy" #define BLOCK_OPT_NOCOW "nocow" +#define BLOCK_OPT_EXTENT_SIZE_HINT "extent_size_hint" #define BLOCK_OPT_OBJECT_SIZE "object_size" #define BLOCK_OPT_REFCOUNT_BITS "refcount_bits" #define BLOCK_OPT_DATA_FILE "data_file" diff --git a/qapi/block-core.json b/qapi/block-core.json index b20332e592..463ffd83da 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -4185,14 +4185,17 @@ # falloc (if defined CONFIG_POSIX_FALLOCATE), # full (if defined CONFIG_POSIX)) # @nocow: Turn off copy-on-write (valid only on btrfs; default: off) +# @extent-size-hint: Extent size hint to add to the image file; 0 for not +# adding an extent size hint (default: 1 MB, since 5.1) # # Since: 2.12 ## { 'struct': 'BlockdevCreateOptionsFile', - 'data': { 'filename': 'str', - 'size': 'size', - '*preallocation': 'PreallocMode', - '*nocow': 'bool' } } + 'data': { 'filename': 'str', + 'size': 'size', + '*preallocation': 'PreallocMode', + '*nocow': 'bool', + '*extent-size-hint': 'size'} } ## # @BlockdevCreateOptionsGluster: diff --git a/tests/qemu-iotests/082.out b/tests/qemu-iotests/082.out index a4a2b69030..f7b3d54b28 100644 --- a/tests/qemu-iotests/082.out +++ b/tests/qemu-iotests/082.out @@ -62,6 +62,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -86,6 +87,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -110,6 +112,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -134,6 +137,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -158,6 +162,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -182,6 +187,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -206,6 +212,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -230,6 +237,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -353,6 +361,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -377,6 +386,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -401,6 +411,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -425,6 +436,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -449,6 +461,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -473,6 +486,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -497,6 +511,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) @@ -521,6 +536,7 @@ Supported options: encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes) + extent_size_hint=<size> - Extent size hint for the image file, 0 to disable lazy_refcounts=<bool (on/off)> - Postpone refcount updates nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs) preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full) diff --git a/tests/qemu-iotests/106 b/tests/qemu-iotests/106 index b5d1ec4078..a20659d443 100755 --- a/tests/qemu-iotests/106 +++ b/tests/qemu-iotests/106 @@ -51,7 +51,10 @@ for create_mode in off falloc full; do echo echo "--- create_mode=$create_mode growth_mode=$growth_mode ---" - _make_test_img -o "preallocation=$create_mode" ${CREATION_SIZE}K + # Our calculation below assumes kilobytes as unit for the actual size. + # Disable the extent size hint because it would give us a result in + # megabytes. + _make_test_img -o "preallocation=$create_mode,extent_size_hint=0" ${CREATION_SIZE}K $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K expected_size=0 @@ -98,7 +101,7 @@ for growth_mode in falloc full; do # plain int. We should use the correct type for the result, and # this tests we do. - _make_test_img 2G + _make_test_img -o "extent_size_hint=0" 2G $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size') diff --git a/tests/qemu-iotests/175 b/tests/qemu-iotests/175 index 020ed8e61f..00a626aa63 100755 --- a/tests/qemu-iotests/175 +++ b/tests/qemu-iotests/175 @@ -89,20 +89,20 @@ min_blocks=$(stat -c '%b' "$TEST_DIR/empty") echo echo "== creating image with default preallocation ==" -_make_test_img $size | _filter_imgfmt +_make_test_img -o extent_size_hint=0 $size | _filter_imgfmt stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size for mode in off full falloc; do echo echo "== creating image with preallocation $mode ==" - _make_test_img -o preallocation=$mode $size | _filter_imgfmt + _make_test_img -o preallocation=$mode,extent_size_hint=0 $size | _filter_imgfmt stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size done for new_size in 4096 1048576; do echo echo "== resize empty image with block_resize ==" - _make_test_img 0 | _filter_imgfmt + _make_test_img -o extent_size_hint=0 0 | _filter_imgfmt _block_resize $TEST_IMG $new_size >/dev/null stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $new_size done diff --git a/tests/qemu-iotests/243 b/tests/qemu-iotests/243 index a61852f6d9..17388a4644 100755 --- a/tests/qemu-iotests/243 +++ b/tests/qemu-iotests/243 @@ -51,7 +51,7 @@ for mode in off metadata falloc full; do echo "=== preallocation=$mode ===" echo - _make_test_img -o "preallocation=$mode" 64M + _make_test_img -o "preallocation=$mode,extent_size_hint=0" 64M printf "File size: " du -b $TEST_IMG | cut -f1 @@ -68,7 +68,8 @@ for mode in off metadata falloc full; do echo "=== External data file: preallocation=$mode ===" echo - _make_test_img -o "data_file=$TEST_IMG.data,preallocation=$mode" 64M + _make_test_img \ + -o "data_file=$TEST_IMG.data,preallocation=$mode,extent_size_hint=0" 64M echo -n "qcow2 file size: " du -b $TEST_IMG | cut -f1 @@ -79,7 +80,7 @@ for mode in off metadata falloc full; do echo -n "qcow2 disk usage: " [ $(du -B1 $TEST_IMG | cut -f1) -lt 1048576 ] && echo "low" || echo "high" echo -n "data disk usage: " - [ $(du -B1 $TEST_IMG.data | cut -f1) -lt 1048576 ] && echo "low" || echo "high" + [ $(du -B1 $TEST_IMG.data | cut -f1) -lt 2097152 ] && echo "low" || echo "high" done |