[libvirt] [PATCH 4/6] storage:dir: .resizeVol callback for ploop volume

To change the size of ploop image file we use ploop resize cmd that takes 2 args: new size and path/to/DiskDescriptor.xml Signed-off-by: Olga Krishtal <okrishtal(a)virtuozzo.com&gt; --- src/storage/storage_backend.c | 28 ++++++++++++++++++++++++++++ src/storage/storage_backend.h | 5 +++++ src/storage/storage_backend_fs.c | 2 ++ 3 files changed, 35 insertions(+) diff --git a/src/storage/storage_backend.c b/src/storage/storage_backend.c index c455908..fb4d1b9 100644 --- a/src/storage/storage_backend.c +++ b/src/storage/storage_backend.c @@ -877,6 +877,34 @@ int virStorageBackendDeletePloop(virConnectPtr conn ATTRIBUTE_UNUSED, return virFileDeleteTree(vol->target.path); } +int virStoragePloopResize(virConnectPtr conn ATTRIBUTE_UNUSED, + virStoragePoolObjPtr pool ATTRIBUTE_UNUSED, + virStorageVolDefPtr vol, + unsigned long long capacity) +{ + int ret; + char *path = NULL; + char *size = NULL; + virCommandPtr cmd = NULL; + + if (virAsprintf(&path, "%s/%s", vol->target.path, "DiskDescriptor.xml") < 0) + return -1; + + if (virAsprintf(&size, "%lluM", VIR_DIV_UP(capacity, 512)) < 0) { + ret = -1; + goto cleanup; + } + cmd = virCommandNewArgList("ploop", "resize", "-s", size, path, NULL); + + ret = virCommandRun(cmd, NULL); + + cleanup: + virCommandFree(cmd); + VIR_FREE(path); + VIR_FREE(size); + return ret; +} + enum { QEMU_IMG_BACKING_FORMAT_NONE = 0, QEMU_IMG_BACKING_FORMAT_FLAG, diff --git a/src/storage/storage_backend.h b/src/storage/storage_backend.h index 7d354c5..1de8dfe 100644 --- a/src/storage/storage_backend.h +++ b/src/storage/storage_backend.h @@ -118,6 +118,11 @@ int virStorageBackendCreatePloop(virConnectPtr conn, int virStorageBackendDeletePloop(virConnectPtr conn, virStorageVolDefPtr vol); +int virStoragePloopResize(virConnectPtr conn, + virStoragePoolObjPtr pool, + virStorageVolDefPtr vol, + unsigned long long capacity); + virStorageBackendBuildVolFrom virStorageBackendGetBuildVolFromFunction(virStorageVolDefPtr vol, virStorageVolDefPtr inputvol); diff --git a/src/storage/storage_backend_fs.c b/src/storage/storage_backend_fs.c index 2290096..c2d148d 100644 --- a/src/storage/storage_backend_fs.c +++ b/src/storage/storage_backend_fs.c @@ -1378,6 +1378,8 @@ virStorageBackendFileSystemVolResize(virConnectPtr conn ATTRIBUTE_UNUSED, if (vol->target.format == VIR_STORAGE_FILE_RAW) { return virStorageFileResize(vol->target.path, capacity, vol->target.allocation, pre_allocate); + } else if (vol->target.format == VIR_STORAGE_FILE_PLOOP) { + return virStoragePloopResize(conn, pool, vol, capacity); } else { if (pre_allocate) { virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", -- 1.8.3.1