Symptoms:-
- Create new Xen VM
- Boot new VM failed
- Console shows kernel panic or unable to display (stays red / down)
Troubleshooting:-
- Take note of VM ID (eg vm315) and node, and SSH to node and see output when booting:-
# cd /home/xen/vm315
# xl create vm315.cfg
# xl console vm315
If found kernel panic as output below.
-- begin initial kernel panic output --
dracut: FATAL: Machine in enforcing mode and cannot execute load_policy. To disable selinux, add selinux=0 to the kernel command line.
dracut: Refusing to continue
dracut Warning: Signal caught!
dracut Warning: dracut: FATAL: Machine in enforcing mode and cannot execute load_policy. To disable selinux, add selinux=0 to the kernel command line.
dracut Warning: dracut: Refusing to continue
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000100
CPU: 0 PID: 1 Comm: init Not tainted 3.18.17-13.el6.x86_64 #1
ffffffff81c4c240 ffff88001ebcfd98 ffffffff8166f44f 000000000000fffe
ffffffff81a5b750 ffff88001ebcfe18 ffffffff8166f1c6 ffff880000000010
ffff88001ebcfe28 ffff88001ebcfdc8 ffffffff81150f18 ffff88001ebcfe18
Call Trace:
[<ffffffff8166f44f>] dump_stack+0x49/0x62
[<ffffffff8166f1c6>] panic+0xc1/0x206
[<ffffffff81150f18>] ? remote_function+0x48/0x60
[<ffffffff81073a3c>] find_new_reaper+0x18c/0x190
[<ffffffff810740d5>] forget_original_parent+0x45/0x2d0
[<ffffffff8115b600>] ? perf_cgroup_switch+0x180/0x180
[<ffffffff81150f9c>] ? perf_cgroup_exit+0x1c/0x20
[<ffffffff81074377>] exit_notify+0x17/0x140
[<ffffffff81075ca1>] do_exit+0x1e1/0x470
[<ffffffff81075f85>] do_group_exit+0x55/0xd0
[<ffffffff81076017>] SyS_exit_group+0x17/0x20
[<ffffffff81673989>] system_call_fastpath+0x12/0x17
Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)
SOLUTION: As suggested, add selinux=0 in "Extra" field in SolusVM VM entry, and reboot.
