Re: [libvirt] [PATCH V2 4/4] libxl: add support for rbd qdisk

xl/libxl already supports qemu's network-based block backends such as nbd and rbd. libvirt has supported configuring such <disk>s for long time too. This patch adds support for rbd disks in the libxl driver by generating a rbd device URL from the virDomainDiskDef object. The URL is passed to libxl via the pdev_path field of libxl_device_disk struct. libxl then passes the URL to qemu for cosumption by the rbd backend. Signed-off-by: Jim Fehlig <jfehlig(a)suse.com&gt; --- src/libxl/libxl_conf.c | 192 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 191 insertions(+), 1 deletion(-)

+ +static int +libxlMakeNetworkDiskSrc(virStorageSourcePtr src, char **srcstr) +{ + virConnectPtr conn = NULL; + char *secret = NULL; + char *username = NULL; + int ret = -1; + + *srcstr = NULL; + if (src->auth && src->protocol == VIR_STORAGE_NET_PROTOCOL_RBD) { + const char *protocol = virStorageNetProtocolTypeToString(src->protocol); + + username = src->auth->username; + if (!(conn = virConnectOpen("xen:///system"))) + goto cleanup; +

+ if (!(secret = libxlGetSecretString(conn, + protocol, + true, + src->auth, + VIR_SECRET_USAGE_TYPE_CEPH))) + goto cleanup; + } + + if (!(*srcstr = libxlMakeNetworkDiskSrcStr(src, username, secret))) + goto cleanup;