4:27 p.m.
Depends on https://gitlab.com/virtio-fs/virtiofsd/-/merge_requests/231
Ján Tomko (2):
qemu: fill capabilities for virtiofsd
qemu: do not use deprecated options for new virtiofsd
src/conf/domain_conf.h | 1 +
src/qemu/qemu_vhost_user.c | 59 +++++++++++++++++++++++++
src/qemu/qemu_vhost_user.h | 12 ++++++
src/qemu/qemu_virtiofs.c | 88 ++++++++++++++++++++++++++------------
4 files changed, 132 insertions(+), 28 deletions(-)
--
2.45.2
4:27 p.m.
New subject: [libvirt PATCH 1/2] qemu: fill capabilities for virtiofsd
Run the daemon with --print-capabilities first, to see what it supports.
Signed-off-by: Ján Tomko <jtomko(a)redhat.com>
---
src/conf/domain_conf.h | 1 +
src/qemu/qemu_vhost_user.c | 58 ++++++++++++++++++++++++++++++++++++++
src/qemu/qemu_vhost_user.h | 12 ++++++++
src/qemu/qemu_virtiofs.c | 9 ++++--
4 files changed, 78 insertions(+), 2 deletions(-)
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 2818a9f1f5..b3a0d26cde 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -899,6 +899,7 @@ struct _virDomainFSDef {
virDomainIdMapDef idmap;
virDomainVirtioOptions *virtio;
virObject *privateData;
+ virBitmap *caps;
};
diff --git a/src/qemu/qemu_vhost_user.c b/src/qemu/qemu_vhost_user.c
index 0294daab80..b916412bc0 100644
--- a/src/qemu/qemu_vhost_user.c
+++ b/src/qemu/qemu_vhost_user.c
@@ -22,6 +22,7 @@
#include "qemu_vhost_user.h"
#include "qemu_interop_config.h"
+#include "virbitmap.h"
#include "virjson.h"
#include "virlog.h"
#include "viralloc.h"
@@ -90,6 +91,11 @@ VIR_ENUM_IMPL(qemuVhostUserGPUFeature,
"render-node",
);
+VIR_ENUM_IMPL(qemuVhostUserFSFeature,
+ QEMU_VHOST_USER_FS_FEATURE_LAST,
+ "options",
+);
+
typedef struct _qemuVhostUserGPU qemuVhostUserGPU;
struct _qemuVhostUserGPU {
size_t nfeatures;
@@ -414,6 +420,53 @@ qemuVhostUserFillDomainGPU(virQEMUDriver *driver,
return ret;
}
+int
+qemuVhostUserFillFSCapabilities(virBitmap **caps,
+ const char *binary,
+ bool reportError G_GNUC_UNUSED)
+{
+ g_autoptr(virJSONValue) doc = NULL;
+ g_autofree char *output = NULL;
+ g_autoptr(virCommand) cmd = NULL;
+ virJSONValue *featuresJSON;
+ size_t nfeatures;
+ size_t i;
+ g_autoptr(virBitmap) features = NULL;
+
+ cmd = virCommandNewArgList(binary, "--print-capabilities", NULL);
+ virCommandSetOutputBuffer(cmd, &output);
+ if (virCommandRun(cmd, NULL) < 0)
+ return -2;
+
+ if (!(doc = virJSONValueFromString(output))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("unable to parse json capabilities '%1$s'"),
+ binary);
+ return -2;
+ }
+
+
+ /* Older virtiofsd did not print any features */
+ if (!(featuresJSON = virJSONValueObjectGetArray(doc, "features")))
+ return 0;
+
+ nfeatures = virJSONValueArraySize(featuresJSON);
+
+ for (i = 0; i < nfeatures; i++) {
+ virJSONValue *item = virJSONValueArrayGet(featuresJSON, i);
+ const char *tmpStr = virJSONValueGetString(item);
+ int tmp;
+
+ if ((tmp = qemuVhostUserFSFeatureTypeFromString(tmpStr)) <= 0) {
+ VIR_DEBUG("ignoring unknown QEMU vhost-user feature '%s'",
tmpStr);
+ continue;
+ }
+ virBitmapSetBitExpand(features, tmp);
+ }
+
+ *caps = g_steal_pointer(&features);
+ return 0;
+}
int
qemuVhostUserFillDomainFS(virQEMUDriver *driver,
@@ -435,6 +488,11 @@ qemuVhostUserFillDomainFS(virQEMUDriver *driver,
continue;
fs->binary = g_strdup(vu->binary);
+ /* todo: error? */
+ if (qemuVhostUserFillFSCapabilities(&fs->caps,
+ vu->binary,
+ false) < 0)
+ continue;
break;
}
diff --git a/src/qemu/qemu_vhost_user.h b/src/qemu/qemu_vhost_user.h
index d1aa6ca189..683c945e34 100644
--- a/src/qemu/qemu_vhost_user.h
+++ b/src/qemu/qemu_vhost_user.h
@@ -46,3 +46,15 @@ qemuVhostUserFillDomainGPU(virQEMUDriver *driver,
int
qemuVhostUserFillDomainFS(virQEMUDriver *driver,
virDomainFSDef *fs);
+
+int
+qemuVhostUserFillFSCapabilities(virBitmap **caps,
+ const char *binary,
+ bool reportError);
+typedef enum {
+ QEMU_VHOST_USER_FS_FEATURE_OPTIONS = 0,
+
+ QEMU_VHOST_USER_FS_FEATURE_LAST
+} qemuVhostUserFSFeature;
+
+VIR_ENUM_DECL(qemuVhostUserFSFeature);
diff --git a/src/qemu/qemu_virtiofs.c b/src/qemu/qemu_virtiofs.c
index 78897d8177..aba6a19562 100644
--- a/src/qemu/qemu_virtiofs.c
+++ b/src/qemu/qemu_virtiofs.c
@@ -446,8 +446,13 @@ qemuVirtioFSPrepareDomain(virQEMUDriver *driver,
if (fs->sock)
return 0;
- if (!fs->binary && qemuVhostUserFillDomainFS(driver, fs) < 0)
- return -1;
+ if (fs->binary) {
+ if (qemuVhostUserFillFSCapabilities(&fs->caps, fs->binary, true) <
0)
+ return -1;
+ } else {
+ if (qemuVhostUserFillDomainFS(driver, fs) < 0)
+ return -1;
+ }
if (!driver->privileged && !fs->idmap.uidmap) {
if (qemuVirtioFSPrepareIdMap(fs) < 0)
--
2.45.2
4:28 p.m.
New subject: [libvirt PATCH 2/2] qemu: do not use deprecated options for new virtiofsd
Use the to-be-introduced virtiofsd capability to mark whether
new options are safe to use.
Depends on:
https://gitlab.com/virtio-fs/virtiofsd/-/merge_requests/231
https://issues.redhat.com/browse/RHEL-7108
Signed-off-by: Ján Tomko <jtomko(a)redhat.com>
---
src/qemu/qemu_vhost_user.c | 5 ++-
src/qemu/qemu_virtiofs.c | 79 +++++++++++++++++++++++++-------------
2 files changed, 56 insertions(+), 28 deletions(-)
diff --git a/src/qemu/qemu_vhost_user.c b/src/qemu/qemu_vhost_user.c
index b916412bc0..a31fe6ed53 100644
--- a/src/qemu/qemu_vhost_user.c
+++ b/src/qemu/qemu_vhost_user.c
@@ -450,6 +450,7 @@ qemuVhostUserFillFSCapabilities(virBitmap **caps,
if (!(featuresJSON = virJSONValueObjectGetArray(doc, "features")))
return 0;
+ features = virBitmapNew(1);
nfeatures = virJSONValueArraySize(featuresJSON);
for (i = 0; i < nfeatures; i++) {
@@ -457,8 +458,8 @@ qemuVhostUserFillFSCapabilities(virBitmap **caps,
const char *tmpStr = virJSONValueGetString(item);
int tmp;
- if ((tmp = qemuVhostUserFSFeatureTypeFromString(tmpStr)) <= 0) {
- VIR_DEBUG("ignoring unknown QEMU vhost-user feature '%s'",
tmpStr);
+ if ((tmp = qemuVhostUserFSFeatureTypeFromString(tmpStr)) < 0) {
+ VIR_DEBUG("ignoring unknown QEMU virtiofs feature '%s'",
tmpStr);
continue;
}
virBitmapSetBitExpand(features, tmp);
diff --git a/src/qemu/qemu_virtiofs.c b/src/qemu/qemu_virtiofs.c
index aba6a19562..f16e0c8532 100644
--- a/src/qemu/qemu_virtiofs.c
+++ b/src/qemu/qemu_virtiofs.c
@@ -139,36 +139,63 @@ qemuVirtioFSBuildCommandLine(virQEMUDriverConfig *cfg,
virCommandPassFD(cmd, *fd, VIR_COMMAND_PASS_FD_CLOSE_PARENT);
*fd = -1;
- virCommandAddArg(cmd, "-o");
- virBufferAddLit(&opts, "source=");
- virQEMUBuildBufferEscapeComma(&opts, fs->src->path);
- if (fs->cache)
- virBufferAsprintf(&opts, ",cache=%s",
virDomainFSCacheModeTypeToString(fs->cache));
- if (fs->sandbox)
- virBufferAsprintf(&opts, ",sandbox=%s",
virDomainFSSandboxModeTypeToString(fs->sandbox));
-
- if (fs->xattr == VIR_TRISTATE_SWITCH_ON)
- virBufferAddLit(&opts, ",xattr");
- else if (fs->xattr == VIR_TRISTATE_SWITCH_OFF)
- virBufferAddLit(&opts, ",no_xattr");
-
- if (fs->flock == VIR_TRISTATE_SWITCH_ON)
- virBufferAddLit(&opts, ",flock");
- else if (fs->flock == VIR_TRISTATE_SWITCH_OFF)
- virBufferAddLit(&opts, ",no_flock");
-
- if (fs->posix_lock == VIR_TRISTATE_SWITCH_ON)
- virBufferAddLit(&opts, ",posix_lock");
- else if (fs->posix_lock == VIR_TRISTATE_SWITCH_OFF)
- virBufferAddLit(&opts, ",no_posix_lock");
-
- virCommandAddArgBuffer(cmd, &opts);
+ if (virBitmapIsBitSet(fs->caps, QEMU_VHOST_USER_FS_FEATURE_OPTIONS)) {
+ virCommandAddArg(cmd, "--shared-dir");
+ virCommandAddArg(cmd, fs->src->path);
+
+ if (fs->cache) {
+ virCommandAddArg(cmd, "--cache");
+ virCommandAddArg(cmd, virDomainFSCacheModeTypeToString(fs->cache));
+ }
+ if (fs->sandbox) {
+ virCommandAddArg(cmd, "--sandbox");
+ virCommandAddArg(cmd, virDomainFSSandboxModeTypeToString(fs->sandbox));
+ }
+
+ if (fs->xattr == VIR_TRISTATE_SWITCH_ON)
+ virCommandAddArg(cmd, "--xattr");
+
+ if (fs->posix_lock != VIR_TRISTATE_SWITCH_ABSENT ||
+ fs->flock != VIR_TRISTATE_SWITCH_ABSENT) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", _("locking
options are not supported by this virtiofsd"));
+ return NULL;
+ }
+ } else {
+ virCommandAddArg(cmd, "-o");
+ virBufferAddLit(&opts, "source=");
+ virQEMUBuildBufferEscapeComma(&opts, fs->src->path);
+ if (fs->cache)
+ virBufferAsprintf(&opts, ",cache=%s",
virDomainFSCacheModeTypeToString(fs->cache));
+ if (fs->sandbox)
+ virBufferAsprintf(&opts, ",sandbox=%s",
virDomainFSSandboxModeTypeToString(fs->sandbox));
+
+ if (fs->xattr == VIR_TRISTATE_SWITCH_ON)
+ virBufferAddLit(&opts, ",xattr");
+ else if (fs->xattr == VIR_TRISTATE_SWITCH_OFF)
+ virBufferAddLit(&opts, ",no_xattr");
+
+ if (fs->flock == VIR_TRISTATE_SWITCH_ON)
+ virBufferAddLit(&opts, ",flock");
+ else if (fs->flock == VIR_TRISTATE_SWITCH_OFF)
+ virBufferAddLit(&opts, ",no_flock");
+
+ if (fs->posix_lock == VIR_TRISTATE_SWITCH_ON)
+ virBufferAddLit(&opts, ",posix_lock");
+ else if (fs->posix_lock == VIR_TRISTATE_SWITCH_OFF)
+ virBufferAddLit(&opts, ",no_posix_lock");
+
+ virCommandAddArgBuffer(cmd, &opts);
+ }
if (fs->thread_pool_size >= 0)
virCommandAddArgFormat(cmd, "--thread-pool-size=%i",
fs->thread_pool_size);
- if (cfg->virtiofsdDebug)
- virCommandAddArg(cmd, "-d");
+ if (cfg->virtiofsdDebug) {
+ if (virBitmapIsBitSet(fs->caps, QEMU_VHOST_USER_FS_FEATURE_OPTIONS))
+ virCommandAddArgList(cmd, "--log-level", "debug", NULL);
+ else
+ virCommandAddArg(cmd, "-d");
+ }
for (i = 0; i < fs->idmap.nuidmap; i++) {
virCommandAddArgFormat(cmd, "--uid-map=:%u:%u:%u:",
--
2.45.2
87
days inactive
87
days old
2 comments
1 participants
participants (1)
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Ján Tomko