我嘗試在較新版本的 libvirtd 上啟動 LXC,但無法啟動並出現以下錯誤:
$ virsh -c lxc: start textlxc
error: Failed to start domain testlxc
error: internal error: cannot load AppArmor profile 'libvirt-dfb2c573-05cb-4ca3-9e46-bea6cebf0f9f'
錯誤訊息在/var/log/libvirt/libvirtd.log
2015-06-23 12:13:12.306+0000: 14141: error : virCommandWait:2532 : internal error: Child process (/usr/lib/libvirt/virt-aa-helper -p 0 -c -u libvirt-dfb2c573-05cb-4ca3-9e46-bea6cebf0f9f) unexpected exit status 1: virt-aa-helper: error: /proc/meminfo
virt-aa-helper: error: skipped restricted file
virt-aa-helper: error: invalid VM definition
2015-06-23 12:13:12.306+0000: 14141: error : AppArmorGenSecurityLabel:468 : internal error: cannot load AppArmor profile 'libvirt-dfb2c573-05cb-4ca3-9e46-bea6cebf0f9f'
這是我的testlxc.xml文件
<domain type='lxc'>
<name>testlxc</name>
<uuid>dfb2c573-05cb-4ca3-9e46-bea6cebf0f9f</uuid>
<memory unit='KiB'>4048292</memory>
<currentMemory unit='KiB'>4048292</currentMemory>
<vcpu placement='static'>2</vcpu>
<resource>
<partition>/machine</partition>
</resource>
<os>
<type arch='x86_64'>exe</type>
<init>/sbin/init</init>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/lib/libvirt/libvirt_lxc</emulator>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/var/lib/libvirt/filesystems/testlxc'/>
<target dir='/'/>
</filesystem>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/var/lib/libvirt/filesystems/testlxc-data'/>
<target dir='/mnt/data'/>
</filesystem>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/var/run/testlxc/lxc'/>
<target dir='/mnt/run'/>
</filesystem>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/proc/meminfo'/>
<target dir='/proc/meminfo'/>
</filesystem>
<console type='pty' tty='/dev/pts/1'>
<source path='/dev/pts/1'/>
<target type='lxc' port='0'/>
<alias name='console0'/>
</console>
</devices>
</domain>
運行的Libvirt版本是1.2.12,我之前在1.2.2版本上成功運行過lxc。
$ libvirtd --version
libvirtd (libvirt) 1.2.12
答案1
我已經在實用程式中找到了網域 XML 驗證的問題virt-aa-helper
。這是應該根據需要產生 apparmor 設定檔的實用程式。並不是 XML 的結構失敗,但報告的錯誤似乎表明情況確實如此。 LXC 容器的函式virDomainDefParseXML
function內部的邏輯驗證domain_conf.c
被破壞。
我對 libvirt 程式碼不夠熟悉,無法修改此共享區域 - 我可能破壞了其他東西,但以下補丁似乎有效:
if (!(flags & VIR_DOMAIN_DEF_PARSE_SKIP_OSTYPE_CHECKS)) {
/* If the logic here seems fairly arbitrary, that's because it is :)
* This is duplicating how the code worked before
* CapabilitiesDomainDataLookup was added. We can simplify this,
* but it would take a bit of work because the test suite fails
* in numerous minor ways. */
bool use_virttype = ((def->os.arch == VIR_ARCH_NONE) ||
!def->os.machine);
virCapsDomainDataPtr capsdata = NULL;
讀書
if (!(flags & VIR_DOMAIN_DEF_PARSE_SKIP_OSTYPE_CHECKS)) {
/* If the logic here seems fairly arbitrary, that's because it is :)
* This is duplicating how the code worked before
* CapabilitiesDomainDataLookup was added. We can simplify this,
* but it would take a bit of work because the test suite fails
* in numerous minor ways. */
bool use_virttype = (def->os.type != VIR_DOMAIN_OS_TYPE_EXE) &&
((def->os.arch == VIR_ARCH_NONE) ||
!def->os.machine);
virCapsDomainDataPtr capsdata = NULL;
不幸的是,我無法找到一種無需重新編譯即可解決此問題的方法。如果您使用 64 位元機器,您可以從以下位置下載我在本機上建置的軟體包這個連結(請原諒我的微軟帳號)。
筆記:若要查看您是否受到此錯誤的影響,請在命令提示字元中輸入以下內容(複製自這個論壇貼文):
$ export VM=foo ; virsh -c lxc:// dumpxml $VM |\
sudo /usr/lib/libvirt/virt-aa-helper -c \
-u libvirt-`virsh -c lxc:// domuuid $VM`
foo
失敗的 lxc 容器的名稱在哪裡。如果您看到輸出
virt-aa-helper: error: could not parse XML
virt-aa-helper: error: could not get VM definition
那麼可能是同一個錯誤。