|
 |
958e1b |
From ddb1e6862dffe40bb2929d3a0e3eba198c54ee43 Mon Sep 17 00:00:00 2001
|
|
|
958e1b |
From: Max Reitz <mreitz@redhat.com>
|
|
|
958e1b |
Date: Mon, 10 Nov 2014 09:14:07 +0100
|
|
|
958e1b |
Subject: [PATCH 30/41] qcow2: Add falloc and full preallocation option
|
|
|
958e1b |
|
|
|
958e1b |
Message-id: <1415610847-15383-5-git-send-email-mreitz@redhat.com>
|
|
|
958e1b |
Patchwork-id: 62240
|
|
|
958e1b |
O-Subject: [RHEL-7.1 qemu-kvm PATCH v2 4/4] qcow2: Add falloc and full preallocation option
|
|
|
958e1b |
Bugzilla: 1087724
|
|
|
958e1b |
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
|
|
|
958e1b |
RH-Acked-by: Fam Zheng <famz@redhat.com>
|
|
|
958e1b |
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
|
|
|
958e1b |
|
|
|
958e1b |
From: Hu Tao <hutao@cn.fujitsu.com>
|
|
|
958e1b |
|
|
|
958e1b |
preallocation=falloc allocates disk space by posix_fallocate(),
|
|
|
958e1b |
preallocation=full allocates disk space by writing zeros to disk.
|
|
|
958e1b |
Both modes imply preallocation=metadata.
|
|
|
958e1b |
|
|
|
958e1b |
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
|
|
|
958e1b |
Reviewed-by: Max Reitz <mreitz@redhat.com>
|
|
|
958e1b |
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
|
|
958e1b |
(cherry picked from commit 0e4271b711a8ea766d29824c844e268b91ac3ae5)
|
|
|
958e1b |
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
|
|
|
958e1b |
|
|
|
958e1b |
Conflicts:
|
|
|
958e1b |
block/qcow2.c
|
|
|
958e1b |
|
|
|
958e1b |
QEMUOptionParameter has not been replaced with QemuOpts downstream,
|
|
|
958e1b |
total_size is in sectors instead of bytes in downstream's
|
|
|
958e1b |
qcow2_create2().
|
|
|
958e1b |
|
|
|
958e1b |
The use of QEMUOptionParameter makes it rather difficult to set an
|
|
|
958e1b |
option in qcow2 for the underlying file to be created. Because qcow2
|
|
|
958e1b |
already used to pass a functionally empty options array, I added an
|
|
|
958e1b |
assertion for this to be true and created a new QEMUOptionParameter
|
|
|
958e1b |
array in case there are actually options to be passed to the protocol
|
|
|
958e1b |
driver (that is, for preallocation).
|
|
|
958e1b |
|
|
|
958e1b |
Signed-off-by: Max Reitz <mreitz@redhat.com>
|
|
|
958e1b |
---
|
|
|
958e1b |
block/qcow2.c | 81 +++++++++++++++++++++++++++++++++++++++-------
|
|
|
958e1b |
qemu-doc.texi | 8 +++--
|
|
|
958e1b |
qemu-img.texi | 8 +++--
|
|
|
958e1b |
tests/qemu-iotests/082.out | 54 +++++++++++++++----------------
|
|
|
958e1b |
4 files changed, 106 insertions(+), 45 deletions(-)
|
|
|
958e1b |
|
|
|
958e1b |
diff --git a/block/qcow2.c b/block/qcow2.c
|
|
|
958e1b |
index 99c6b93..43e54d6 100644
|
|
|
958e1b |
--- a/block/qcow2.c
|
|
|
958e1b |
+++ b/block/qcow2.c
|
|
|
958e1b |
@@ -1557,8 +1557,7 @@ static int preallocate(BlockDriverState *bs)
|
|
|
958e1b |
static int qcow2_create2(const char *filename, int64_t total_size,
|
|
|
958e1b |
const char *backing_file, const char *backing_format,
|
|
|
958e1b |
int flags, size_t cluster_size, PreallocMode prealloc,
|
|
|
958e1b |
- QEMUOptionParameter *options, int version,
|
|
|
958e1b |
- Error **errp)
|
|
|
958e1b |
+ int version, Error **errp)
|
|
|
958e1b |
{
|
|
|
958e1b |
/* Calculate cluster_bits */
|
|
|
958e1b |
int cluster_bits;
|
|
|
958e1b |
@@ -1588,8 +1587,71 @@ static int qcow2_create2(const char *filename, int64_t total_size,
|
|
|
958e1b |
uint64_t* refcount_table;
|
|
|
958e1b |
Error *local_err = NULL;
|
|
|
958e1b |
int ret;
|
|
|
958e1b |
+ QEMUOptionParameter *options = NULL;
|
|
|
958e1b |
+ BlockDriver *file_drv;
|
|
|
958e1b |
+
|
|
|
958e1b |
+ if (prealloc == PREALLOC_MODE_FULL || prealloc == PREALLOC_MODE_FALLOC) {
|
|
|
958e1b |
+ int64_t meta_size = 0;
|
|
|
958e1b |
+ uint64_t nreftablee, nrefblocke, nl1e, nl2e;
|
|
|
958e1b |
+ int64_t aligned_total_size = align_offset(total_size * BDRV_SECTOR_SIZE,
|
|
|
958e1b |
+ cluster_size);
|
|
|
958e1b |
+
|
|
|
958e1b |
+ /* header: 1 cluster */
|
|
|
958e1b |
+ meta_size += cluster_size;
|
|
|
958e1b |
+
|
|
|
958e1b |
+ /* total size of L2 tables */
|
|
|
958e1b |
+ nl2e = aligned_total_size / cluster_size;
|
|
|
958e1b |
+ nl2e = align_offset(nl2e, cluster_size / sizeof(uint64_t));
|
|
|
958e1b |
+ meta_size += nl2e * sizeof(uint64_t);
|
|
|
958e1b |
+
|
|
|
958e1b |
+ /* total size of L1 tables */
|
|
|
958e1b |
+ nl1e = nl2e * sizeof(uint64_t) / cluster_size;
|
|
|
958e1b |
+ nl1e = align_offset(nl1e, cluster_size / sizeof(uint64_t));
|
|
|
958e1b |
+ meta_size += nl1e * sizeof(uint64_t);
|
|
|
958e1b |
+
|
|
|
958e1b |
+ /* total size of refcount blocks
|
|
|
958e1b |
+ *
|
|
|
958e1b |
+ * note: every host cluster is reference-counted, including metadata
|
|
|
958e1b |
+ * (even refcount blocks are recursively included).
|
|
|
958e1b |
+ * Let:
|
|
|
958e1b |
+ * a = total_size * BDRV_SECTOR_SIZE (this is the guest disk size)
|
|
|
958e1b |
+ * m = meta size not including refcount blocks and refcount tables
|
|
|
958e1b |
+ * c = cluster size
|
|
|
958e1b |
+ * y1 = number of refcount blocks entries
|
|
|
958e1b |
+ * y2 = meta size including everything
|
|
|
958e1b |
+ * then,
|
|
|
958e1b |
+ * y1 = (y2 + a)/c
|
|
|
958e1b |
+ * y2 = y1 * sizeof(u16) + y1 * sizeof(u16) * sizeof(u64) / c + m
|
|
|
958e1b |
+ * we can get y1:
|
|
|
958e1b |
+ * y1 = (a + m) / (c - sizeof(u16) - sizeof(u16) * sizeof(u64) / c)
|
|
|
958e1b |
+ */
|
|
|
958e1b |
+ nrefblocke = (aligned_total_size + meta_size + cluster_size) /
|
|
|
958e1b |
+ (cluster_size - sizeof(uint16_t) -
|
|
|
958e1b |
+ 1.0 * sizeof(uint16_t) * sizeof(uint64_t) / cluster_size);
|
|
|
958e1b |
+ nrefblocke = align_offset(nrefblocke, cluster_size / sizeof(uint16_t));
|
|
|
958e1b |
+ meta_size += nrefblocke * sizeof(uint16_t);
|
|
|
958e1b |
+
|
|
|
958e1b |
+ /* total size of refcount tables */
|
|
|
958e1b |
+ nreftablee = nrefblocke * sizeof(uint16_t) / cluster_size;
|
|
|
958e1b |
+ nreftablee = align_offset(nreftablee, cluster_size / sizeof(uint64_t));
|
|
|
958e1b |
+ meta_size += nreftablee * sizeof(uint64_t);
|
|
|
958e1b |
+
|
|
|
958e1b |
+ file_drv = bdrv_find_protocol(filename, true);
|
|
|
958e1b |
+ if (file_drv == NULL) {
|
|
|
958e1b |
+ error_setg(errp, "Could not find protocol for file '%s'", filename);
|
|
|
958e1b |
+ return -ENOENT;
|
|
|
958e1b |
+ }
|
|
|
958e1b |
+
|
|
|
958e1b |
+ options = append_option_parameters(options, file_drv->create_options);
|
|
|
958e1b |
+
|
|
|
958e1b |
+ set_option_parameter_int(options, BLOCK_OPT_SIZE,
|
|
|
958e1b |
+ aligned_total_size + meta_size);
|
|
|
958e1b |
+ set_option_parameter(options, BLOCK_OPT_PREALLOC,
|
|
|
958e1b |
+ PreallocMode_lookup[prealloc]);
|
|
|
958e1b |
+ }
|
|
|
958e1b |
|
|
|
958e1b |
ret = bdrv_create_file(filename, options, &local_err);
|
|
|
958e1b |
+ free_option_parameters(options);
|
|
|
958e1b |
if (ret < 0) {
|
|
|
958e1b |
error_propagate(errp, local_err);
|
|
|
958e1b |
return ret;
|
|
|
958e1b |
@@ -1691,7 +1753,7 @@ static int qcow2_create2(const char *filename, int64_t total_size,
|
|
|
958e1b |
}
|
|
|
958e1b |
|
|
|
958e1b |
/* And if we're supposed to preallocate metadata, do that now */
|
|
|
958e1b |
- if (prealloc == PREALLOC_MODE_METADATA) {
|
|
|
958e1b |
+ if (prealloc != PREALLOC_MODE_OFF) {
|
|
|
958e1b |
BDRVQcowState *s = bs->opaque;
|
|
|
958e1b |
qemu_co_mutex_lock(&s->lock);
|
|
|
958e1b |
ret = preallocate(bs);
|
|
|
958e1b |
@@ -1761,13 +1823,6 @@ static int qcow2_create(const char *filename, QEMUOptionParameter *options,
|
|
|
958e1b |
options++;
|
|
|
958e1b |
}
|
|
|
958e1b |
|
|
|
958e1b |
- if (prealloc != PREALLOC_MODE_OFF &&
|
|
|
958e1b |
- prealloc != PREALLOC_MODE_METADATA) {
|
|
|
958e1b |
- error_setg(errp, "Unsupported preallocate mode: %s",
|
|
|
958e1b |
- PreallocMode_lookup[prealloc]);
|
|
|
958e1b |
- return -EINVAL;
|
|
|
958e1b |
- }
|
|
|
958e1b |
-
|
|
|
958e1b |
if (backing_file && prealloc != PREALLOC_MODE_OFF) {
|
|
|
958e1b |
error_setg(errp, "Backing file and preallocation cannot be used at "
|
|
|
958e1b |
"the same time");
|
|
|
958e1b |
@@ -1780,8 +1835,9 @@ static int qcow2_create(const char *filename, QEMUOptionParameter *options,
|
|
|
958e1b |
return -EINVAL;
|
|
|
958e1b |
}
|
|
|
958e1b |
|
|
|
958e1b |
+ assert(!options || !options->name);
|
|
|
958e1b |
ret = qcow2_create2(filename, sectors, backing_file, backing_fmt, flags,
|
|
|
958e1b |
- cluster_size, prealloc, options, version, &local_err);
|
|
|
958e1b |
+ cluster_size, prealloc, version, &local_err);
|
|
|
958e1b |
if (error_is_set(&local_err)) {
|
|
|
958e1b |
error_propagate(errp, local_err);
|
|
|
958e1b |
}
|
|
|
958e1b |
@@ -2315,7 +2371,8 @@ static QEMUOptionParameter qcow2_create_options[] = {
|
|
|
958e1b |
{
|
|
|
958e1b |
.name = BLOCK_OPT_PREALLOC,
|
|
|
958e1b |
.type = OPT_STRING,
|
|
|
958e1b |
- .help = "Preallocation mode (allowed values: off, metadata)"
|
|
|
958e1b |
+ .help = "Preallocation mode (allowed values: off, metadata, "
|
|
|
958e1b |
+ "falloc, full)"
|
|
|
958e1b |
},
|
|
|
958e1b |
{
|
|
|
958e1b |
.name = BLOCK_OPT_LAZY_REFCOUNTS,
|
|
|
958e1b |
diff --git a/qemu-doc.texi b/qemu-doc.texi
|
|
|
958e1b |
index dc5b49e..0f7e5f8 100644
|
|
|
958e1b |
--- a/qemu-doc.texi
|
|
|
958e1b |
+++ b/qemu-doc.texi
|
|
|
958e1b |
@@ -567,9 +567,11 @@ sizes can improve the image file size whereas larger cluster sizes generally
|
|
|
958e1b |
provide better performance.
|
|
|
958e1b |
|
|
|
958e1b |
@item preallocation
|
|
|
958e1b |
-Preallocation mode (allowed values: off, metadata). An image with preallocated
|
|
|
958e1b |
-metadata is initially larger but can improve performance when the image needs
|
|
|
958e1b |
-to grow.
|
|
|
958e1b |
+Preallocation mode (allowed values: @code{off}, @code{metadata}, @code{falloc},
|
|
|
958e1b |
+@code{full}). An image with preallocated metadata is initially larger but can
|
|
|
958e1b |
+improve performance when the image needs to grow. @code{falloc} and @code{full}
|
|
|
958e1b |
+preallocations are like the same options of @code{raw} format, but sets up
|
|
|
958e1b |
+metadata also.
|
|
|
958e1b |
|
|
|
958e1b |
@item lazy_refcounts
|
|
|
958e1b |
If this option is set to @code{on}, reference count updates are postponed with
|
|
|
958e1b |
diff --git a/qemu-img.texi b/qemu-img.texi
|
|
|
958e1b |
index 80d3261..e943856 100644
|
|
|
958e1b |
--- a/qemu-img.texi
|
|
|
958e1b |
+++ b/qemu-img.texi
|
|
|
958e1b |
@@ -432,9 +432,11 @@ sizes can improve the image file size whereas larger cluster sizes generally
|
|
|
958e1b |
provide better performance.
|
|
|
958e1b |
|
|
|
958e1b |
@item preallocation
|
|
|
958e1b |
-Preallocation mode (allowed values: off, metadata). An image with preallocated
|
|
|
958e1b |
-metadata is initially larger but can improve performance when the image needs
|
|
|
958e1b |
-to grow.
|
|
|
958e1b |
+Preallocation mode (allowed values: @code{off}, @code{metadata}, @code{falloc},
|
|
|
958e1b |
+@code{full}). An image with preallocated metadata is initially larger but can
|
|
|
958e1b |
+improve performance when the image needs to grow. @code{falloc} and @code{full}
|
|
|
958e1b |
+preallocations are like the same options of @code{raw} format, but sets up
|
|
|
958e1b |
+metadata also.
|
|
|
958e1b |
|
|
|
958e1b |
@item lazy_refcounts
|
|
|
958e1b |
If this option is set to @code{on}, reference count updates are postponed with
|
|
|
958e1b |
diff --git a/tests/qemu-iotests/082.out b/tests/qemu-iotests/082.out
|
|
|
958e1b |
index d71610b..8abfde7 100644
|
|
|
958e1b |
--- a/tests/qemu-iotests/082.out
|
|
|
958e1b |
+++ b/tests/qemu-iotests/082.out
|
|
|
958e1b |
@@ -64,7 +64,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: create -f qcow2 -o ? TEST_DIR/t.qcow2 128M
|
|
|
958e1b |
@@ -75,7 +75,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: create -f qcow2 -o cluster_size=4k,help TEST_DIR/t.qcow2 128M
|
|
|
958e1b |
@@ -86,7 +86,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: create -f qcow2 -o cluster_size=4k,? TEST_DIR/t.qcow2 128M
|
|
|
958e1b |
@@ -97,7 +97,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: create -f qcow2 -o help,cluster_size=4k TEST_DIR/t.qcow2 128M
|
|
|
958e1b |
@@ -108,7 +108,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: create -f qcow2 -o ?,cluster_size=4k TEST_DIR/t.qcow2 128M
|
|
|
958e1b |
@@ -119,7 +119,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: create -f qcow2 -o cluster_size=4k -o help TEST_DIR/t.qcow2 128M
|
|
|
958e1b |
@@ -130,7 +130,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: create -f qcow2 -o cluster_size=4k -o ? TEST_DIR/t.qcow2 128M
|
|
|
958e1b |
@@ -141,7 +141,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: create -f qcow2 -o backing_file=TEST_DIR/t.qcow2,,help TEST_DIR/t.qcow2 128M
|
|
|
958e1b |
@@ -167,7 +167,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: create -o help
|
|
|
958e1b |
@@ -245,7 +245,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: convert -O qcow2 -o ? TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base
|
|
|
958e1b |
@@ -256,7 +256,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: convert -O qcow2 -o cluster_size=4k,help TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base
|
|
|
958e1b |
@@ -267,7 +267,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: convert -O qcow2 -o cluster_size=4k,? TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base
|
|
|
958e1b |
@@ -278,7 +278,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: convert -O qcow2 -o help,cluster_size=4k TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base
|
|
|
958e1b |
@@ -289,7 +289,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: convert -O qcow2 -o ?,cluster_size=4k TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base
|
|
|
958e1b |
@@ -300,7 +300,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: convert -O qcow2 -o cluster_size=4k -o help TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base
|
|
|
958e1b |
@@ -311,7 +311,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: convert -O qcow2 -o cluster_size=4k -o ? TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base
|
|
|
958e1b |
@@ -322,7 +322,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: convert -O qcow2 -o backing_file=TEST_DIR/t.qcow2,,help TEST_DIR/t.qcow2 TEST_DIR/t.qcow2.base
|
|
|
958e1b |
@@ -348,7 +348,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: convert -o help
|
|
|
958e1b |
@@ -415,7 +415,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: amend -f qcow2 -o ? TEST_DIR/t.qcow2
|
|
|
958e1b |
@@ -426,7 +426,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: amend -f qcow2 -o cluster_size=4k,help TEST_DIR/t.qcow2
|
|
|
958e1b |
@@ -437,7 +437,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: amend -f qcow2 -o cluster_size=4k,? TEST_DIR/t.qcow2
|
|
|
958e1b |
@@ -448,7 +448,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: amend -f qcow2 -o help,cluster_size=4k TEST_DIR/t.qcow2
|
|
|
958e1b |
@@ -459,7 +459,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: amend -f qcow2 -o ?,cluster_size=4k TEST_DIR/t.qcow2
|
|
|
958e1b |
@@ -470,7 +470,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: amend -f qcow2 -o cluster_size=4k -o help TEST_DIR/t.qcow2
|
|
|
958e1b |
@@ -481,7 +481,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: amend -f qcow2 -o cluster_size=4k -o ? TEST_DIR/t.qcow2
|
|
|
958e1b |
@@ -492,7 +492,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: amend -f qcow2 -o backing_file=TEST_DIR/t.qcow2,,help TEST_DIR/t.qcow2
|
|
|
958e1b |
@@ -520,7 +520,7 @@ backing_file File name of a base image
|
|
|
958e1b |
backing_fmt Image format of the base image
|
|
|
958e1b |
encryption Encrypt the image
|
|
|
958e1b |
cluster_size qcow2 cluster size
|
|
|
958e1b |
-preallocation Preallocation mode (allowed values: off, metadata)
|
|
|
958e1b |
+preallocation Preallocation mode (allowed values: off, metadata, falloc, full)
|
|
|
958e1b |
lazy_refcounts Postpone refcount updates
|
|
|
958e1b |
|
|
|
958e1b |
Testing: convert -o help
|
|
|
958e1b |
--
|
|
|
958e1b |
1.8.3.1
|
|
|
958e1b |
|