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0f4d7daa8c
This removes code duplication and simplifies cgroup detection. As a drawback we will not have separate messages to enable cgroup controller in kernel or to mount it. On the other side the rewrite adds support for cgroup v2. The kernel config support was wrong because it was parsing '/proc/self/cgroup' instead of '/proc/cgroups/' file. The mount suggestion is removed as well because it will not work with cgroup v2. Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
87 lines
3.2 KiB
C
87 lines
3.2 KiB
C
/*
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* virt-host-validate-lxc.c: Sanity check a LXC hypervisor host
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*
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* Copyright (C) 2012 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*/
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#include <config.h>
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#include "virt-host-validate-lxc.h"
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#include "virt-host-validate-common.h"
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#include "vircgroup.h"
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int virHostValidateLXC(void)
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{
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int ret = 0;
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if (virHostValidateLinuxKernel("LXC", (2 << 16) | (6 << 8) | 26,
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VIR_HOST_VALIDATE_FAIL,
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_("Upgrade to a kernel supporting namespaces")) < 0)
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ret = -1;
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if (virHostValidateNamespace("LXC", "ipc",
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VIR_HOST_VALIDATE_FAIL,
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_("IPC namespace support is required")) < 0)
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ret = -1;
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if (virHostValidateNamespace("LXC", "mnt",
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VIR_HOST_VALIDATE_FAIL,
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_("Mount namespace support is required")) < 0)
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ret = -1;
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if (virHostValidateNamespace("LXC", "pid",
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VIR_HOST_VALIDATE_FAIL,
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_("PID namespace support is required")) < 0)
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ret = -1;
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if (virHostValidateNamespace("LXC", "uts",
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VIR_HOST_VALIDATE_FAIL,
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_("UTS namespace support is required")) < 0)
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ret = -1;
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if (virHostValidateNamespace("LXC", "net",
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VIR_HOST_VALIDATE_WARN,
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_("Network namespace support is recommended")) < 0)
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ret = -1;
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if (virHostValidateNamespace("LXC", "user",
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VIR_HOST_VALIDATE_WARN,
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_("User namespace support is recommended")) < 0)
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ret = -1;
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if (virHostValidateCGroupControllers("LXC",
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(1 << VIR_CGROUP_CONTROLLER_MEMORY) |
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(1 << VIR_CGROUP_CONTROLLER_CPU) |
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(1 << VIR_CGROUP_CONTROLLER_CPUACCT) |
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(1 << VIR_CGROUP_CONTROLLER_CPUSET) |
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(1 << VIR_CGROUP_CONTROLLER_DEVICES) |
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(1 << VIR_CGROUP_CONTROLLER_BLKIO),
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VIR_HOST_VALIDATE_FAIL) < 0) {
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ret = -1;
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}
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#if WITH_FUSE
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if (virHostValidateDeviceExists("LXC", "/sys/fs/fuse/connections",
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VIR_HOST_VALIDATE_FAIL,
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_("Load the 'fuse' module to enable /proc/ overrides")) < 0)
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ret = -1;
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#endif
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return ret;
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}
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