libvirt - 在 Ubuntu 18.04 上为 virtiofs 构建（或只是获取）最新的 libvirtd
问题描述
请注意，我对 kvm 和 libvirt真的很陌生，所以这里可能缺少一些真正基础的东西。如果这真的是一个“阅读常见问题解答”类型的问题，我深表歉意，但到目前为止我还没有找到任何具体的东西。
通过 apt 在 Ubuntu 18.04 上安装 libvirt 会安装 4.0.0 版。我需要与客人共享主机文件夹，并希望确保体面的性能，所以我想试试 virtiofs。文档为此建议最低 6.2（实际上，只是放入<driver type='virtiofs'/>来宾配置会导致无法针对架构进行验证）。
我下载了 libvirt 源代码，但找不到完整的先决条件列表。我最终安装了这些configure以运行而不会抱怨：
apt install gcc libglib2.0-dev gnutls-dev libxml2-dev xsltproc python-docutils libdevmapper-dev libpciaccess-dev
然后我跑了../configure --without-macvtap（因为我使用的是桥接网络）。
此时，我可以运行make check，但最终会出现一串编译错误util/libvirt_util_la-virnetdev.lo（下面的完整错误输出）。我假设我仍然缺少一些先决条件，但是我在任何地方都找不到完整的列表，并且谷歌搜索这个错误也没有出现太多。我缺少的地方有一些构建说明吗？
# make check
make check-recursive
make[1]: Entering directory '/root/libvirtd/libvirt-6.4.0/build'
Making check in .
make[2]: Entering directory '/root/libvirtd/libvirt-6.4.0/build'
make check-local
make[3]: Entering directory '/root/libvirtd/libvirt-6.4.0/build'
make all-recursive
make[4]: Entering directory '/root/libvirtd/libvirt-6.4.0/build'
Making all in .
make[5]: Entering directory '/root/libvirtd/libvirt-6.4.0/build'
make[5]: Leaving directory '/root/libvirtd/libvirt-6.4.0/build'
Making all in include/libvirt
make[5]: Entering directory '/root/libvirtd/libvirt-6.4.0/build/include/libvirt'
make[5]: Nothing to be done for 'all'.
make[5]: Leaving directory '/root/libvirtd/libvirt-6.4.0/build/include/libvirt'
Making all in src
make[5]: Entering directory '/root/libvirtd/libvirt-6.4.0/build/src'
make all-am
make[6]: Entering directory '/root/libvirtd/libvirt-6.4.0/build/src'
CC util/libvirt_util_la-virnetdev.lo
../../src/util/virnetdev.c: In function 'virNetDevGetFamilyId':
../../src/util/virnetdev.c:2980:12: error: variable 'gmsgh' has initializer but incomplete type
struct genlmsghdr gmsgh = {
^~~~~~~~~~
../../src/util/virnetdev.c:2981:10: error: 'struct genlmsghdr' has no member named 'cmd'
.cmd = CTRL_CMD_GETFAMILY,
^~~
../../src/util/virnetdev.c:2981:16: error: 'CTRL_CMD_GETFAMILY' undeclared (first use in this function); did you mean 'U_CHARSET_FAMILY'?
.cmd = CTRL_CMD_GETFAMILY,
^~~~~~~~~~~~~~~~~~
U_CHARSET_FAMILY
../../src/util/virnetdev.c:2981:16: note: each undeclared identifier is reported only once for each function it appears in
../../src/util/virnetdev.c:2981:16: warning: excess elements in struct initializer
../../src/util/virnetdev.c:2981:16: note: (near initialization for 'gmsgh')
../../src/util/virnetdev.c:2982:10: error: 'struct genlmsghdr' has no member named 'version'
.version = DEVLINK_GENL_VERSION,
^~~~~~~
../../src/util/virnetdev.c:2982:20: warning: excess elements in struct initializer
.version = DEVLINK_GENL_VERSION,
^~~~~~~~~~~~~~~~~~~~
../../src/util/virnetdev.c:2982:20: note: (near initialization for 'gmsgh')
../../src/util/virnetdev.c:2983:10: error: 'struct genlmsghdr' has no member named 'reserved'
.reserved = 0,
^~~~~~~~
../../src/util/virnetdev.c:2983:21: warning: excess elements in struct initializer
.reserved = 0,
^
../../src/util/virnetdev.c:2983:21: note: (near initialization for 'gmsgh')
../../src/util/virnetdev.c:2980:23: error: storage size of 'gmsgh' isn't known
struct genlmsghdr gmsgh = {
^~~~~
../../src/util/virnetdev.c:2985:23: error: 'CTRL_ATTR_MAX' undeclared (first use in this function); did you mean 'DEVLINK_ATTR_MAX'?
struct nlattr *tb[CTRL_ATTR_MAX + 1] = {NULL, };
^~~~~~~~~~~~~
DEVLINK_ATTR_MAX
../../src/util/virnetdev.c:2989:20: warning: implicit declaration of function 'nlmsg_alloc_simple'; did you mean 'g_regex_split_simple'? [-Wimplicit-function-declaration]
if (!(nl_msg = nlmsg_alloc_simple(GENL_ID_CTRL,
^~~~~~~~~~~~~~~~~~
g_regex_split_simple
../../src/util/virnetdev.c:2989:20: warning: nested extern declaration of 'nlmsg_alloc_simple' [-Wnested-externs]
../../src/util/virnetdev.c:2989:39: error: 'GENL_ID_CTRL' undeclared (first use in this function); did you mean 'G_ASCII_CNTRL'?
if (!(nl_msg = nlmsg_alloc_simple(GENL_ID_CTRL,
^~~~~~~~~~~~
G_ASCII_CNTRL
../../src/util/virnetdev.c:2990:39: error: 'NLM_F_REQUEST' undeclared (first use in this function)
NLM_F_REQUEST | NLM_F_ACK))) {
^~~~~~~~~~~~~
../../src/util/virnetdev.c:2990:55: error: 'NLM_F_ACK' undeclared (first use in this function); did you mean 'N_6PACK'?
NLM_F_REQUEST | NLM_F_ACK))) {
^~~~~~~~~
N_6PACK
../../src/util/virnetdev.c:2995:9: warning: implicit declaration of function 'nlmsg_append'; did you mean 'g_list_append'? [-Wimplicit-function-declaration]
if (nlmsg_append(nl_msg, &gmsgh, sizeof(gmsgh), NLMSG_ALIGNTO) < 0)
^~~~~~~~~~~~
g_list_append
../../src/util/virnetdev.c:2995:9: warning: nested extern declaration of 'nlmsg_append' [-Wnested-externs]
../../src/util/virnetdev.c:2995:53: error: 'NLMSG_ALIGNTO' undeclared (first use in this function); did you mean 'CMSG_ALIGN'?
if (nlmsg_append(nl_msg, &gmsgh, sizeof(gmsgh), NLMSG_ALIGNTO) < 0)
^~~~~~~~~~~~~
CMSG_ALIGN
../../src/util/virnetdev.c:2998:9: warning: implicit declaration of function 'nla_put_string'; did you mean 'g_hmac_get_string'? [-Wimplicit-function-declaration]
if (nla_put_string(nl_msg, CTRL_ATTR_FAMILY_NAME, family_name) < 0) {
^~~~~~~~~~~~~~
g_hmac_get_string
../../src/util/virnetdev.c:2998:9: warning: nested extern declaration of 'nla_put_string' [-Wnested-externs]
../../src/util/virnetdev.c:2998:32: error: 'CTRL_ATTR_FAMILY_NAME' undeclared (first use in this function); did you mean 'CTRL_ATTR_MAX'?
if (nla_put_string(nl_msg, CTRL_ATTR_FAMILY_NAME, family_name) < 0) {
^~~~~~~~~~~~~~~~~~~~~
CTRL_ATTR_MAX
../../src/util/virnetdev.c:3004:61: error: 'NETLINK_GENERIC' undeclared (first use in this function); did you mean 'NETLINK_MSG_PUT'?
if (virNetlinkCommand(nl_msg, &resp, &recvbuflen, 0, 0, NETLINK_GENERIC, 0) < 0)
^~~~~~~~~~~~~~~
NETLINK_MSG_PUT
../../src/util/virnetdev.c:3007:9: warning: implicit declaration of function 'nlmsg_parse'; did you mean 'umsg_parse'? [-Wimplicit-function-declaration]
if (nlmsg_parse(resp, sizeof(struct nlmsghdr), tb, CTRL_ATTR_MAX, NULL) < 0) {
^~~~~~~~~~~
umsg_parse
../../src/util/virnetdev.c:3007:9: warning: nested extern declaration of 'nlmsg_parse' [-Wnested-externs]
../../src/util/virnetdev.c:3007:34: error: invalid application of 'sizeof' to incomplete type 'struct nlmsghdr'
if (nlmsg_parse(resp, sizeof(struct nlmsghdr), tb, CTRL_ATTR_MAX, NULL) < 0) {
^~~~~~
../../src/util/virnetdev.c:3013:12: error: 'CTRL_ATTR_FAMILY_ID' undeclared (first use in this function); did you mean 'CTRL_ATTR_FAMILY_NAME'?
if (tb[CTRL_ATTR_FAMILY_ID] == NULL) {
^~~~~~~~~~~~~~~~~~~
CTRL_ATTR_FAMILY_NAME
../../src/util/virnetdev.c:3018:31: warning: implicit declaration of function 'RTA_DATA'; did you mean 'NO_DATA'? [-Wimplicit-function-declaration]
*family_id = *(uint32_t *)RTA_DATA(tb[CTRL_ATTR_FAMILY_ID]);
^~~~~~~~
NO_DATA
../../src/util/virnetdev.c:3018:31: warning: nested extern declaration of 'RTA_DATA' [-Wnested-externs]
../../src/util/virnetdev.c:3022:5: warning: implicit declaration of function 'nlmsg_free'; did you mean 'g_list_free'? [-Wimplicit-function-declaration]
nlmsg_free(nl_msg);
^~~~~~~~~~
g_list_free
../../src/util/virnetdev.c:3022:5: warning: nested extern declaration of 'nlmsg_free' [-Wnested-externs]
../../src/util/virnetdev.c:2985:20: warning: unused variable 'tb' [-Wunused-variable]
struct nlattr *tb[CTRL_ATTR_MAX + 1] = {NULL, };
^~
../../src/util/virnetdev.c:2980:23: warning: unused variable 'gmsgh' [-Wunused-variable]
struct genlmsghdr gmsgh = {
^~~~~
../../src/util/virnetdev.c: In function 'virNetDevSwitchdevFeature':
../../src/util/virnetdev.c:3046:12: error: variable 'gmsgh' has initializer but incomplete type
struct genlmsghdr gmsgh = {
^~~~~~~~~~
../../src/util/virnetdev.c:3047:10: error: 'struct genlmsghdr' has no member named 'cmd'
.cmd = DEVLINK_CMD_ESWITCH_GET,
^~~
../../src/util/virnetdev.c:3047:16: warning: excess elements in struct initializer
.cmd = DEVLINK_CMD_ESWITCH_GET,
^~~~~~~~~~~~~~~~~~~~~~~
../../src/util/virnetdev.c:3047:16: note: (near initialization for 'gmsgh')
../../src/util/virnetdev.c:3048:10: error: 'struct genlmsghdr' has no member named 'version'
.version = DEVLINK_GENL_VERSION,
^~~~~~~
../../src/util/virnetdev.c:3048:20: warning: excess elements in struct initializer
.version = DEVLINK_GENL_VERSION,
^~~~~~~~~~~~~~~~~~~~
../../src/util/virnetdev.c:3048:20: note: (near initialization for 'gmsgh')
../../src/util/virnetdev.c:3049:10: error: 'struct genlmsghdr' has no member named 'reserved'
.reserved = 0,
^~~~~~~~
../../src/util/virnetdev.c:3049:21: warning: excess elements in struct initializer
.reserved = 0,
^
../../src/util/virnetdev.c:3049:21: note: (near initialization for 'gmsgh')
../../src/util/virnetdev.c:3046:23: error: storage size of 'gmsgh' isn't known
struct genlmsghdr gmsgh = {
^~~~~
../../src/util/virnetdev.c:3078:39: error: 'NLM_F_REQUEST' undeclared (first use in this function)
NLM_F_REQUEST | NLM_F_ACK))) {
^~~~~~~~~~~~~
../../src/util/virnetdev.c:3078:55: error: 'NLM_F_ACK' undeclared (first use in this function); did you mean 'N_6PACK'?
NLM_F_REQUEST | NLM_F_ACK))) {
^~~~~~~~~
N_6PACK
../../src/util/virnetdev.c:3083:53: error: 'NLMSG_ALIGNTO' undeclared (first use in this function); did you mean 'CMSG_ALIGN'?
if (nlmsg_append(nl_msg, &gmsgh, sizeof(gmsgh), NLMSG_ALIGNTO) < 0)
^~~~~~~~~~~~~
CMSG_ALIGN
../../src/util/virnetdev.c:3088:9: warning: implicit declaration of function 'nla_put'; did you mean '_IO_putc'? [-Wimplicit-function-declaration]
if (nla_put(nl_msg, DEVLINK_ATTR_BUS_NAME, strlen("pci")+1, "pci") < 0 ||
^~~~~~~
_IO_putc
../../src/util/virnetdev.c:3088:9: warning: nested extern declaration of 'nla_put' [-Wnested-externs]
../../src/util/virnetdev.c:3095:61: error: 'NETLINK_GENERIC' undeclared (first use in this function); did you mean 'NETLINK_MSG_PUT'?
if (virNetlinkCommand(nl_msg, &resp, &recvbuflen, 0, 0, NETLINK_GENERIC, 0) < 0)
^~~~~~~~~~~~~~~
NETLINK_MSG_PUT
../../src/util/virnetdev.c:3098:34: error: invalid application of 'sizeof' to incomplete type 'struct genlmsghdr'
if (nlmsg_parse(resp, sizeof(struct genlmsghdr), tb, DEVLINK_ATTR_MAX, NULL) < 0) {
^~~~~~
../../src/util/virnetdev.c:3105:10: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
*(int *)RTA_DATA(tb[DEVLINK_ATTR_ESWITCH_MODE]) == DEVLINK_ESWITCH_MODE_SWITCHDEV) {
^
../../src/util/virnetdev.c:3046:23: warning: unused variable 'gmsgh' [-Wunused-variable]
struct genlmsghdr gmsgh = {
^~~~~
Makefile:10841: recipe for target 'util/libvirt_util_la-virnetdev.lo' failed
make[6]: *** [util/libvirt_util_la-virnetdev.lo] Error 1
make[6]: Leaving directory '/root/libvirtd/libvirt-6.4.0/build/src'
Makefile:6443: recipe for target 'all' failed
make[5]: *** [all] Error 2
make[5]: Leaving directory '/root/libvirtd/libvirt-6.4.0/build/src'
Makefile:777: recipe for target 'all-recursive' failed
make[4]: *** [all-recursive] Error 1
make[4]: Leaving directory '/root/libvirtd/libvirt-6.4.0/build'
Makefile:670: recipe for target 'all' failed
make[3]: *** [all] Error 2
make[3]: Leaving directory '/root/libvirtd/libvirt-6.4.0/build'
Makefile:1070: recipe for target 'check-am' failed
make[2]: *** [check-am] Error 2
make[2]: Leaving directory '/root/libvirtd/libvirt-6.4.0/build'
Makefile:777: recipe for target 'check-recursive' failed
make[1]: *** [check-recursive] Error 1
make[1]: Leaving directory '/root/libvirtd/libvirt-6.4.0/build'
Makefile:1072: recipe for target 'check' failed
make: *** [check] Error 2
解决方案
我猜测这可能是由--without-macvtap要配置的 arg 引起的。我希望您触发了#ifdef不正确的检查组合。即使您打算使用桥接网络，让 libvirt 构建 macvtap 支持也没有什么坏处，因此只需删除--without-macvtaparg 作为第一次尝试修复它。
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