[libvirt] [PATCH 01/19] storage: Adjust qemu-img switches check
John Ferlan
jferlan at redhat.com
Tue Jun 14 00:27:40 UTC 2016
Since we support QEMU 0.12 and later, checking for support of specific flags
added prior to that isn't necessary.
Thus start with the base of having the "-o options" available for the
qemu-img create option and then determine whether we have the compat
option for qcow2 files (which would be necessary up through qemu 2.0
where the default changes to compat 0.11).
Adjust test to no long check for NONE and FLAG options as well was removing
results of tests that would use that option.
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
src/storage/storage_backend.c | 91 +++++++---------------
tests/storagevolxml2argvdata/qcow2-flag.argv | 2 -
.../qcow2-nobacking-convert-flag.argv | 2 -
.../qcow2-nobacking-convert-none.argv | 2 -
.../qcow2-nobacking-flag.argv | 1 -
.../qcow2-nobacking-none.argv | 1 -
tests/storagevolxml2argvdata/qcow2-none.argv | 1 -
tests/storagevolxml2argvtest.c | 22 +-----
8 files changed, 29 insertions(+), 93 deletions(-)
delete mode 100644 tests/storagevolxml2argvdata/qcow2-flag.argv
delete mode 100644 tests/storagevolxml2argvdata/qcow2-nobacking-convert-flag.argv
delete mode 100644 tests/storagevolxml2argvdata/qcow2-nobacking-convert-none.argv
delete mode 100644 tests/storagevolxml2argvdata/qcow2-nobacking-flag.argv
delete mode 100644 tests/storagevolxml2argvdata/qcow2-nobacking-none.argv
delete mode 100644 tests/storagevolxml2argvdata/qcow2-none.argv
diff --git a/src/storage/storage_backend.c b/src/storage/storage_backend.c
index 8f03a6e..7ef9ecd 100644
--- a/src/storage/storage_backend.c
+++ b/src/storage/storage_backend.c
@@ -869,10 +869,15 @@ virStoragePloopResize(virStorageVolDefPtr vol,
return ret;
}
+/* Flag values shared w/ storagevolxml2argvtest.c.
+ *
+ * QEMU_IMG_BACKING_FORMAT_OPTIONS (added in qemu 0.11)
+ * QEMU_IMG_BACKING_FORMAT_OPTIONS_COMPAT
+ * was made necessary due to 2.0 change to change the default
+ * qcow2 file format from 0.10 to 1.1.
+ */
enum {
- QEMU_IMG_BACKING_FORMAT_NONE = 0,
- QEMU_IMG_BACKING_FORMAT_FLAG,
- QEMU_IMG_BACKING_FORMAT_OPTIONS,
+ QEMU_IMG_BACKING_FORMAT_OPTIONS = 0,
QEMU_IMG_BACKING_FORMAT_OPTIONS_COMPAT,
};
@@ -904,46 +909,18 @@ virStorageBackendQemuImgSupportsCompat(const char *qemuimg)
static int
virStorageBackendQEMUImgBackingFormat(const char *qemuimg)
{
- char *help = NULL;
- char *start;
- char *end;
- char *tmp;
- int ret = -1;
- int exitstatus;
- virCommandPtr cmd = virCommandNewArgList(qemuimg, "-h", NULL);
-
- virCommandAddEnvString(cmd, "LC_ALL=C");
- virCommandSetOutputBuffer(cmd, &help);
- virCommandClearCaps(cmd);
-
- /* qemuimg doesn't return zero exit status on -h,
- * therefore we need to provide pointer for storing
- * exit status, although we don't parse it any later */
- if (virCommandRun(cmd, &exitstatus) < 0)
- goto cleanup;
-
- if ((start = strstr(help, " create ")) == NULL ||
- (end = strstr(start, "\n")) == NULL) {
- virReportError(VIR_ERR_INTERNAL_ERROR,
- _("unable to parse qemu-img output '%s'"),
- help);
- goto cleanup;
- }
- if (((tmp = strstr(start, "-F fmt")) && tmp < end) ||
- ((tmp = strstr(start, "-F backing_fmt")) && tmp < end)) {
- ret = QEMU_IMG_BACKING_FORMAT_FLAG;
- } else if ((tmp = strstr(start, "[-o options]")) && tmp < end) {
- if (virStorageBackendQemuImgSupportsCompat(qemuimg))
- ret = QEMU_IMG_BACKING_FORMAT_OPTIONS_COMPAT;
- else
- ret = QEMU_IMG_BACKING_FORMAT_OPTIONS;
- } else {
- ret = QEMU_IMG_BACKING_FORMAT_NONE;
- }
+ /* As of QEMU 0.11 the [-o options] support was added via qemu
+ * commit id '9ea2ea71', so we start with that base and figure
+ * out what else we have */
+ int ret = QEMU_IMG_BACKING_FORMAT_OPTIONS;
+
+ /* QEMU 2.0 changed to using a format that only QEMU 1.1 and newer
+ * understands. Since we still support QEMU 0.12 and newer, we need
+ * to be able to handle the previous format as can be set via a
+ * compat=0.10 option. */
+ if (virStorageBackendQemuImgSupportsCompat(qemuimg))
+ ret = QEMU_IMG_BACKING_FORMAT_OPTIONS_COMPAT;
- cleanup:
- virCommandFree(cmd);
- VIR_FREE(help);
return ret;
}
@@ -1218,29 +1195,17 @@ virStorageBackendCreateQemuImgCmdFromVol(virConnectPtr conn,
if (info.backingPath)
virCommandAddArgList(cmd, "-b", info.backingPath, NULL);
- if (imgformat >= QEMU_IMG_BACKING_FORMAT_OPTIONS) {
- if (info.format == VIR_STORAGE_FILE_QCOW2 && !info.compat &&
- imgformat == QEMU_IMG_BACKING_FORMAT_OPTIONS_COMPAT)
- info.compat = "0.10";
+ if (info.format == VIR_STORAGE_FILE_QCOW2 && !info.compat &&
+ imgformat >= QEMU_IMG_BACKING_FORMAT_OPTIONS_COMPAT)
+ info.compat = "0.10";
- if (virStorageBackendCreateQemuImgOpts(&opts, info) < 0) {
- virCommandFree(cmd);
- return NULL;
- }
- if (opts)
- virCommandAddArgList(cmd, "-o", opts, NULL);
- VIR_FREE(opts);
- } else {
- if (info.backingPath) {
- if (imgformat == QEMU_IMG_BACKING_FORMAT_FLAG)
- virCommandAddArgList(cmd, "-F", backingType, NULL);
- else
- VIR_DEBUG("Unable to set backing store format for %s with %s",
- info.path, create_tool);
- }
- if (info.encryption)
- virCommandAddArg(cmd, "-e");
+ if (virStorageBackendCreateQemuImgOpts(&opts, info) < 0) {
+ virCommandFree(cmd);
+ return NULL;
}
+ if (opts)
+ virCommandAddArgList(cmd, "-o", opts, NULL);
+ VIR_FREE(opts);
if (info.inputPath)
virCommandAddArg(cmd, info.inputPath);
diff --git a/tests/storagevolxml2argvdata/qcow2-flag.argv b/tests/storagevolxml2argvdata/qcow2-flag.argv
deleted file mode 100644
index 5f87ad5..0000000
--- a/tests/storagevolxml2argvdata/qcow2-flag.argv
+++ /dev/null
@@ -1,2 +0,0 @@
-qemu-img create -f qcow2 -b /dev/null -F raw \
--e /var/lib/libvirt/images/OtherDemo.img 5242880K
diff --git a/tests/storagevolxml2argvdata/qcow2-nobacking-convert-flag.argv b/tests/storagevolxml2argvdata/qcow2-nobacking-convert-flag.argv
deleted file mode 100644
index 57bdd4a..0000000
--- a/tests/storagevolxml2argvdata/qcow2-nobacking-convert-flag.argv
+++ /dev/null
@@ -1,2 +0,0 @@
-qemu-img convert -f raw -O qcow2 -e /var/lib/libvirt/images/sparse.img \
-/var/lib/libvirt/images/OtherDemo.img
diff --git a/tests/storagevolxml2argvdata/qcow2-nobacking-convert-none.argv b/tests/storagevolxml2argvdata/qcow2-nobacking-convert-none.argv
deleted file mode 100644
index 57bdd4a..0000000
--- a/tests/storagevolxml2argvdata/qcow2-nobacking-convert-none.argv
+++ /dev/null
@@ -1,2 +0,0 @@
-qemu-img convert -f raw -O qcow2 -e /var/lib/libvirt/images/sparse.img \
-/var/lib/libvirt/images/OtherDemo.img
diff --git a/tests/storagevolxml2argvdata/qcow2-nobacking-flag.argv b/tests/storagevolxml2argvdata/qcow2-nobacking-flag.argv
deleted file mode 100644
index 62ad85f..0000000
--- a/tests/storagevolxml2argvdata/qcow2-nobacking-flag.argv
+++ /dev/null
@@ -1 +0,0 @@
-qemu-img create -f qcow2 -e /var/lib/libvirt/images/OtherDemo.img 5242880K
diff --git a/tests/storagevolxml2argvdata/qcow2-nobacking-none.argv b/tests/storagevolxml2argvdata/qcow2-nobacking-none.argv
deleted file mode 100644
index 62ad85f..0000000
--- a/tests/storagevolxml2argvdata/qcow2-nobacking-none.argv
+++ /dev/null
@@ -1 +0,0 @@
-qemu-img create -f qcow2 -e /var/lib/libvirt/images/OtherDemo.img 5242880K
diff --git a/tests/storagevolxml2argvdata/qcow2-none.argv b/tests/storagevolxml2argvdata/qcow2-none.argv
deleted file mode 100644
index 10b7175..0000000
--- a/tests/storagevolxml2argvdata/qcow2-none.argv
+++ /dev/null
@@ -1 +0,0 @@
-qemu-img create -f qcow2 -b /dev/null -e /var/lib/libvirt/images/OtherDemo.img 5242880K
diff --git a/tests/storagevolxml2argvtest.c b/tests/storagevolxml2argvtest.c
index 8934471..ccfe9ab 100644
--- a/tests/storagevolxml2argvtest.c
+++ b/tests/storagevolxml2argvtest.c
@@ -168,9 +168,7 @@ testCompareXMLToArgvHelper(const void *data)
}
enum {
- FMT_NONE = 0,
- FMT_FLAG,
- FMT_OPTIONS,
+ FMT_OPTIONS = 0,
FMT_COMPAT,
};
@@ -217,24 +215,6 @@ mymain(void)
DO_TEST_FAIL("pool-dir", "vol-qcow2",
"pool-dir", "vol-file",
"qcow2-convert-prealloc", flags, FMT_OPTIONS);
- DO_TEST("pool-dir", "vol-qcow2",
- NULL, NULL,
- "qcow2-flag", 0, FMT_FLAG);
- DO_TEST("pool-dir", "vol-qcow2-nobacking",
- NULL, NULL,
- "qcow2-nobacking-flag", 0, FMT_FLAG);
- DO_TEST("pool-dir", "vol-qcow2-nobacking",
- "pool-dir", "vol-file",
- "qcow2-nobacking-convert-flag", 0, FMT_FLAG);
- DO_TEST("pool-dir", "vol-qcow2",
- NULL, NULL,
- "qcow2-none", 0, FMT_NONE);
- DO_TEST("pool-dir", "vol-qcow2-nobacking",
- NULL, NULL,
- "qcow2-nobacking-none", 0, FMT_NONE);
- DO_TEST("pool-dir", "vol-qcow2-nobacking",
- "pool-dir", "vol-file",
- "qcow2-nobacking-convert-none", 0, FMT_NONE);
DO_TEST("pool-dir", "vol-qcow2-lazy",
NULL, NULL,
"qcow2-lazy", 0, FMT_OPTIONS);
--
2.5.5
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