[libvirt] [PATCH v3 4/4] vz: support filesystem type volume
Olga Krishtal
okrishtal at virtuozzo.com
Thu Jul 14 13:52:41 UTC 2016
Vz containers are able to use ploop volumes from storage pools
to work upon.
To use filesystem type volume, pool name and volume name should be
specifaed in <source> :
<filesystem type='volume' accessmode='passthrough'>
<driver type='ploop' format='ploop'/>
<source pool='guest_images' volume='TEST_POOL_CT'/>
<target dir='/'/>
</filesystem>
The information about pool and volume is stored in ct dom configuration:
<StorageURL>libvirt://localhost/pool_name/vol_name</StorageURL>
and can be easily obtained via PrlVmDevHd_GetStorageURL sdk call.
The only shorcoming: if storage pool is moved somewhere the ct
should be redefined in order to refresh the information aboot path
to root.hdd
Signed-off-by: Olga Krishtal <okrishtal at virtuozzo.com>
---
src/storage/storage_driver.c | 4 ++
src/vz/vz_driver.c | 2 +-
src/vz/vz_sdk.c | 119 ++++++++++++++++++++++++++++++++++++++++---
src/vz/vz_sdk.h | 2 +-
4 files changed, 118 insertions(+), 9 deletions(-)
diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c
index cb9d578..dedc5c6 100644
--- a/src/storage/storage_driver.c
+++ b/src/storage/storage_driver.c
@@ -3509,6 +3509,10 @@ virStorageTranslateDiskSourcePool(virConnectPtr conn,
def->src->srcpool->actualtype = VIR_STORAGE_TYPE_BLOCK;
break;
+ case VIR_STORAGE_VOL_PLOOP:
+ def->src->srcpool->actualtype = VIR_STORAGE_TYPE_FILE;
+ break;
+
case VIR_STORAGE_VOL_NETWORK:
case VIR_STORAGE_VOL_NETDIR:
virReportError(VIR_ERR_INTERNAL_ERROR,
diff --git a/src/vz/vz_driver.c b/src/vz/vz_driver.c
index b17cea7..ae6c13d 100644
--- a/src/vz/vz_driver.c
+++ b/src/vz/vz_driver.c
@@ -762,7 +762,7 @@ vzDomainDefineXMLFlags(virConnectPtr conn, const char *xml, unsigned int flags)
if (prlsdkCreateVm(driver, def))
goto cleanup;
} else if (def->os.type == VIR_DOMAIN_OSTYPE_EXE) {
- if (prlsdkCreateCt(driver, def))
+ if (prlsdkCreateCt(conn, def))
goto cleanup;
} else {
virReportError(VIR_ERR_INVALID_ARG,
diff --git a/src/vz/vz_sdk.c b/src/vz/vz_sdk.c
index 5d4f76a..fd1296c 100644
--- a/src/vz/vz_sdk.c
+++ b/src/vz/vz_sdk.c
@@ -33,6 +33,7 @@
#include "virtime.h"
#include "virhostcpu.h"
+#include "storage/storage_driver.h"
#include "vz_sdk.h"
#define VIR_FROM_THIS VIR_FROM_PARALLELS
@@ -645,6 +646,8 @@ prlsdkGetFSInfo(PRL_HANDLE prldisk,
{
char *buf = NULL;
int ret = -1;
+ char **matches = NULL;
+ virURIPtr uri = NULL;
fs->type = VIR_DOMAIN_FS_TYPE_FILE;
fs->fsdriver = VIR_DOMAIN_FS_DRIVER_TYPE_PLOOP;
@@ -655,12 +658,51 @@ prlsdkGetFSInfo(PRL_HANDLE prldisk,
fs->readonly = false;
fs->symlinksResolved = false;
- if (!(buf = prlsdkGetStringParamVar(PrlVmDev_GetImagePath, prldisk)))
+ if (!(buf = prlsdkGetStringParamVar(PrlVmDevHd_GetStorageURL, prldisk)))
goto cleanup;
- fs->src->path = buf;
- buf = NULL;
+ if (!virStringIsEmpty(buf)) {
+ if (!(uri = virURIParse(buf)))
+ goto cleanup;
+ if (STRNEQ("libvirt", uri->scheme)) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Unknown uri scheme: '%s'"),
+ uri->scheme);
+ goto cleanup;
+ }
+
+ if (!(matches = virStringSplitCount(uri->path, "/", 0, NULL)) ||
+ !matches[0]) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("splitting StorageUrl failed %s"), uri->path);
+ goto cleanup;
+ }
+ if (!matches[1]) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("can't identify pool in uri %s "), uri->path);
+ goto cleanup;
+ }
+ if (!matches[2]) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("can't identify volume in uri %s"), uri->path);
+ goto cleanup;
+ }
+ fs->type = VIR_DOMAIN_FS_TYPE_VOLUME;
+ if (VIR_ALLOC(fs->src->srcpool) < 0)
+ goto cleanup;
+ if (VIR_STRDUP(fs->src->srcpool->pool, matches[1]) < 0)
+ goto cleanup;
+ if (VIR_STRDUP(fs->src->srcpool->volume, matches[2]) < 0)
+ goto cleanup;
+ VIR_FREE(buf);
+ } else {
+ fs->type = VIR_DOMAIN_FS_TYPE_FILE;
+ if (!(buf = prlsdkGetStringParamVar(PrlVmDev_GetImagePath, prldisk)))
+ goto cleanup;
+ fs->src->path = buf;
+ buf = NULL;
+ }
if (!(buf = prlsdkGetStringParamVar(PrlVmDevHd_GetMountPoint, prldisk)))
goto cleanup;
@@ -671,6 +713,7 @@ prlsdkGetFSInfo(PRL_HANDLE prldisk,
cleanup:
VIR_FREE(buf);
+ virStringFreeList(matches);
return ret;
}
@@ -2695,10 +2738,11 @@ static int prlsdkCheckNetUnsupportedParams(virDomainNetDefPtr net)
static int prlsdkCheckFSUnsupportedParams(virDomainFSDefPtr fs)
{
- if (fs->type != VIR_DOMAIN_FS_TYPE_FILE) {
+ if (fs->type != VIR_DOMAIN_FS_TYPE_FILE &&
+ fs->type != VIR_DOMAIN_FS_TYPE_VOLUME) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
- _("Only file based filesystems are "
- "supported by vz driver."));
+ _("Only file based or volume based filesystems "
+ "are supported by vz driver."));
return -1;
}
@@ -3514,6 +3558,7 @@ prlsdkAddFS(PRL_HANDLE sdkdom, virDomainFSDefPtr fs)
PRL_RESULT pret;
PRL_HANDLE sdkdisk = PRL_INVALID_HANDLE;
int ret = -1;
+ char *storage = NULL;
if (fs->type == VIR_DOMAIN_FS_TYPE_TEMPLATE)
return 0;
@@ -3524,6 +3569,14 @@ prlsdkAddFS(PRL_HANDLE sdkdom, virDomainFSDefPtr fs)
pret = PrlVmCfg_CreateVmDev(sdkdom, PDE_HARD_DISK, &sdkdisk);
prlsdkCheckRetGoto(pret, cleanup);
+ if (fs->type == VIR_DOMAIN_FS_TYPE_VOLUME) {
+ if (virAsprintf(&storage, "libvirt://localhost/%s/%s", fs->src->srcpool->pool,
+ fs->src->srcpool->volume) < 0)
+ goto cleanup;
+ pret = PrlVmDevHd_SetStorageURL(sdkdisk, storage);
+ prlsdkCheckRetGoto(pret, cleanup);
+ }
+
pret = PrlVmDev_SetEnabled(sdkdisk, 1);
prlsdkCheckRetGoto(pret, cleanup);
@@ -3548,6 +3601,7 @@ prlsdkAddFS(PRL_HANDLE sdkdom, virDomainFSDefPtr fs)
ret = 0;
cleanup:
+ VIR_FREE(storage);
PrlHandle_Free(sdkdisk);
return ret;
}
@@ -3848,8 +3902,52 @@ prlsdkCreateVm(vzDriverPtr driver, virDomainDefPtr def)
return ret;
}
+static int
+virStorageTranslatePoolLocal(virConnectPtr conn, virStorageSourcePtr src)
+{
+
+ virStoragePoolPtr pool = NULL;
+ virStorageVolPtr vol = NULL;
+ virStorageVolInfo info;
+ int ret = -1;
+
+ if (!(pool = virStoragePoolLookupByName(conn, src->srcpool->pool)))
+ return -1;
+ if (virStoragePoolIsActive(pool) != 1) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("storage pool '%s' containing volume '%s' "
+ "is not active"), src->srcpool->pool,
+ src->srcpool->volume);
+ goto cleanup;
+ }
+
+ if (!(vol = virStorageVolLookupByName(pool, src->srcpool->volume)))
+ goto cleanup;
+
+ if (virStorageVolGetInfo(vol, &info) < 0)
+ goto cleanup;
+
+ if (info.type != VIR_STORAGE_VOL_PLOOP) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("Unsupported volume format '%s'"),
+ virStorageVolTypeToString(info.type));
+ goto cleanup;
+ }
+
+ if (!(src->path = virStorageVolGetPath(vol)))
+ goto cleanup;
+
+ ret = 0;
+
+ cleanup:
+ virObjectUnref(pool);
+ virObjectUnref(vol);
+ return ret;
+}
+
+
int
-prlsdkCreateCt(vzDriverPtr driver, virDomainDefPtr def)
+prlsdkCreateCt(virConnectPtr conn, virDomainDefPtr def)
{
PRL_HANDLE sdkdom = PRL_INVALID_HANDLE;
PRL_GET_VM_CONFIG_PARAM_DATA confParam;
@@ -3857,6 +3955,8 @@ prlsdkCreateCt(vzDriverPtr driver, virDomainDefPtr def)
PRL_HANDLE result = PRL_INVALID_HANDLE;
PRL_RESULT pret;
PRL_UINT32 flags;
+ vzConnPtr privconn = conn->privateData;
+ vzDriverPtr driver = privconn->driver;
int ret = -1;
int useTemplate = 0;
size_t i;
@@ -3869,6 +3969,11 @@ prlsdkCreateCt(vzDriverPtr driver, virDomainDefPtr def)
}
if (def->fss[i]->type == VIR_DOMAIN_FS_TYPE_TEMPLATE)
useTemplate = 1;
+ if (def->fss[i]->type == VIR_DOMAIN_FS_TYPE_VOLUME) {
+ if (virStorageTranslatePoolLocal(conn, def->fss[i]->src) < 0)
+ goto cleanup;
+ }
+
}
if (useTemplate && def->nfss > 1) {
diff --git a/src/vz/vz_sdk.h b/src/vz/vz_sdk.h
index 41557a3..2b0cbd3 100644
--- a/src/vz/vz_sdk.h
+++ b/src/vz/vz_sdk.h
@@ -57,7 +57,7 @@ prlsdkApplyConfig(vzDriverPtr driver,
virDomainObjPtr dom,
virDomainDefPtr new);
int prlsdkCreateVm(vzDriverPtr driver, virDomainDefPtr def);
-int prlsdkCreateCt(vzDriverPtr driver, virDomainDefPtr def);
+int prlsdkCreateCt(virConnectPtr conn, virDomainDefPtr def);
int
prlsdkUnregisterDomain(vzDriverPtr driver, virDomainObjPtr dom, unsigned int flags);
int
--
1.8.3.1
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