External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2024-10-30 09:53:10 +00:00
Code Issues Packages Projects Releases Wiki Activity

locking: Add APIs to lock individual image files

Browse Source 
Add helper APIs to manage individual image files rather than disks. To
simplify the addition some parts of the code were refactored in this
patch.
This commit is contained in:
Peter Krempa 2014-06-23 15:16:46 +02:00
parent 1ba14d6df2
commit 68f0deb0dc
3 changed files with 52 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/libvirt_private.syms
View File

@ -862,6 +862,8 @@ virRegisterStorageDriver;
# locking/domain_lock.h # locking/domain_lock.h
virDomainLockDiskAttach; virDomainLockDiskAttach;
virDomainLockDiskDetach; virDomainLockDiskDetach;
virDomainLockImageAttach;
virDomainLockImageDetach;
virDomainLockLeaseAttach; virDomainLockLeaseAttach;
virDomainLockLeaseDetach; virDomainLockLeaseDetach;
virDomainLockProcessInquire; virDomainLockProcessInquire;

61
src/locking/domain_lock.c
View File

@ -68,14 +68,13 @@ static int virDomainLockManagerAddLease(virLockManagerPtr lock,
} }
static int virDomainLockManagerAddDisk(virLockManagerPtr lock, static int virDomainLockManagerAddImage(virLockManagerPtr lock,
virDomainDiskDefPtr disk) virStorageSourcePtr src)
{ {
unsigned int diskFlags = 0; unsigned int diskFlags = 0;
const char *src = virDomainDiskGetSource(disk); int type = virStorageSourceGetActualType(src);
int type = virDomainDiskGetType(disk);
if (!src) if (!src->path)
return 0; return 0;
if (!(type == VIR_STORAGE_TYPE_BLOCK || if (!(type == VIR_STORAGE_TYPE_BLOCK ||
@ -83,24 +82,25 @@ static int virDomainLockManagerAddDisk(virLockManagerPtr lock,
type == VIR_STORAGE_TYPE_DIR)) type == VIR_STORAGE_TYPE_DIR))
return 0; return 0;
if (disk->src->readonly) if (src->readonly)
diskFlags |= VIR_LOCK_MANAGER_RESOURCE_READONLY; diskFlags |= VIR_LOCK_MANAGER_RESOURCE_READONLY;
if (disk->src->shared) if (src->shared)
diskFlags |= VIR_LOCK_MANAGER_RESOURCE_SHARED; diskFlags |= VIR_LOCK_MANAGER_RESOURCE_SHARED;
VIR_DEBUG("Add disk %s", src); VIR_DEBUG("Add disk %s", src->path);
if (virLockManagerAddResource(lock, if (virLockManagerAddResource(lock,
VIR_LOCK_MANAGER_RESOURCE_TYPE_DISK, VIR_LOCK_MANAGER_RESOURCE_TYPE_DISK,
src, src->path,
0, 0,
NULL, NULL,
diskFlags) < 0) { diskFlags) < 0) {
VIR_DEBUG("Failed add disk %s", src); VIR_DEBUG("Failed add disk %s", src->path);
return -1; return -1;
} }
return 0; return 0;
} }
static virLockManagerPtr virDomainLockManagerNew(virLockManagerPluginPtr plugin, static virLockManagerPtr virDomainLockManagerNew(virLockManagerPluginPtr plugin,
const char *uri, const char *uri,
virDomainObjPtr dom, virDomainObjPtr dom,
@ -148,10 +148,13 @@ static virLockManagerPtr virDomainLockManagerNew(virLockManagerPluginPtr plugin,
goto error; goto error;
VIR_DEBUG("Adding disks"); VIR_DEBUG("Adding disks");
for (i = 0; i < dom->def->ndisks; i++) for (i = 0; i < dom->def->ndisks; i++) {
if (virDomainLockManagerAddDisk(lock, dom->def->disks[i]) < 0) virDomainDiskDefPtr disk = dom->def->disks[i];
if (virDomainLockManagerAddImage(lock, disk->src) < 0)
goto error; goto error;
} }
}
return lock; return lock;
@ -247,21 +250,20 @@ int virDomainLockProcessInquire(virLockManagerPluginPtr plugin,
} }
int virDomainLockDiskAttach(virLockManagerPluginPtr plugin, int virDomainLockImageAttach(virLockManagerPluginPtr plugin,
const char *uri, const char *uri,
virDomainObjPtr dom, virDomainObjPtr dom,
virDomainDiskDefPtr disk) virStorageSourcePtr src)
{ {
virLockManagerPtr lock; virLockManagerPtr lock;
int ret = -1; int ret = -1;
VIR_DEBUG("plugin=%p dom=%p disk=%p", VIR_DEBUG("plugin=%p dom=%p src=%p", plugin, dom, src);
plugin, dom, disk);
if (!(lock = virDomainLockManagerNew(plugin, uri, dom, false))) if (!(lock = virDomainLockManagerNew(plugin, uri, dom, false)))
return -1; return -1;
if (virDomainLockManagerAddDisk(lock, disk) < 0) if (virDomainLockManagerAddImage(lock, src) < 0)
goto cleanup; goto cleanup;
if (virLockManagerAcquire(lock, NULL, 0, if (virLockManagerAcquire(lock, NULL, 0,
@ -276,20 +278,29 @@ int virDomainLockDiskAttach(virLockManagerPluginPtr plugin,
return ret; return ret;
} }
int virDomainLockDiskDetach(virLockManagerPluginPtr plugin,
int virDomainLockDiskAttach(virLockManagerPluginPtr plugin,
const char *uri,
virDomainObjPtr dom, virDomainObjPtr dom,
virDomainDiskDefPtr disk) virDomainDiskDefPtr disk)
{
return virDomainLockImageAttach(plugin, uri, dom, disk->src);
}
int virDomainLockImageDetach(virLockManagerPluginPtr plugin,
virDomainObjPtr dom,
virStorageSourcePtr src)
{ {
virLockManagerPtr lock; virLockManagerPtr lock;
int ret = -1; int ret = -1;
VIR_DEBUG("plugin=%p dom=%p disk=%p", VIR_DEBUG("plugin=%p dom=%p src=%p", plugin, dom, src);
plugin, dom, disk);
if (!(lock = virDomainLockManagerNew(plugin, NULL, dom, false))) if (!(lock = virDomainLockManagerNew(plugin, NULL, dom, false)))
return -1; return -1;
if (virDomainLockManagerAddDisk(lock, disk) < 0) if (virDomainLockManagerAddImage(lock, src) < 0)
goto cleanup; goto cleanup;
if (virLockManagerRelease(lock, NULL, 0) < 0) if (virLockManagerRelease(lock, NULL, 0) < 0)
@ -304,6 +315,14 @@ int virDomainLockDiskDetach(virLockManagerPluginPtr plugin,
} }
int virDomainLockDiskDetach(virLockManagerPluginPtr plugin,
virDomainObjPtr dom,
virDomainDiskDefPtr disk)
{
return virDomainLockImageDetach(plugin, dom, disk->src);
}
int virDomainLockLeaseAttach(virLockManagerPluginPtr plugin, int virDomainLockLeaseAttach(virLockManagerPluginPtr plugin,
const char *uri, const char *uri,
virDomainObjPtr dom, virDomainObjPtr dom,

8
src/locking/domain_lock.h
View File

@ -50,6 +50,14 @@ int virDomainLockDiskDetach(virLockManagerPluginPtr plugin,
virDomainObjPtr dom, virDomainObjPtr dom,
virDomainDiskDefPtr disk); virDomainDiskDefPtr disk);
int virDomainLockImageAttach(virLockManagerPluginPtr plugin,
const char *uri,
virDomainObjPtr dom,
virStorageSourcePtr src);
int virDomainLockImageDetach(virLockManagerPluginPtr plugin,
virDomainObjPtr dom,
virStorageSourcePtr src);
int virDomainLockLeaseAttach(virLockManagerPluginPtr plugin, int virDomainLockLeaseAttach(virLockManagerPluginPtr plugin,
const char *uri, const char *uri,
virDomainObjPtr dom, virDomainObjPtr dom,