Hi, I think that you need update 4 for proper KVM support.
Libvirt works with qemu and kvm by design. Cheers, Ohad On 10/20/09, Ehud Karni <[email protected]> wrote: > Hello all, > > I've been using virtualization with Xen for quite a while. > 2 weeks ago I decided give `kvm' a try, but yesterday I went back to > Xen, after kvm caused panic and misbehaved. > > The CPU is Intel Xeon E5335 @ 2.00GHz 4 cores. > The OS is CentOS 5.3/4 2.6.18-164.el5 (for kvm use), > 2.6.18-164.el5xen (for xen use). > > The problems with the kvm started when I tried to install the guest. > The guest panicked immediately after I pressed enter on the 1st screen. > I overcome this problem by adding the `nmi_watchdog=0' kernel parameter > when doing the guest installation. > > But than I had 3 problems on the host: It lost its network or part of > it (e.g. NFS mount) occasionally, sometimes it rebooted itself and > sometimes it panicked. It also filled the log with BUG alerts (example > is bellow). > > So I added the `nmi_watchdog=0' kernel parameter to the host too. > It made thing better (no reboot or panic) but it still lost the network, > and the log filled with the same BUG reports. > > I changed to the Xen kernel (dropping the nmi_watchdog=0), things > quited down and there are no errors. > > BTW, I found that I can still run the guests with `qemu-kvm' (not the > qemu-dm that come with Xen) and control them with virt-manager through > the qemu connection (qemu:///system) even though the kvm and kvm-intel > modules are not loaded. > > Ehud. > > > The BUG allert in the system log: > > Oct 10 10:00:11 cvhlnx kernel: BUG: soft lockup - CPU#1 stuck for 10s! > [qemu-kvm:12659] > Oct 10 10:00:11 cvhlnx kernel: CPU 1: > Oct 10 10:00:11 cvhlnx kernel: Modules linked in: loop tun ipt_MASQUERADE > iptable_nat ip_nat xt_state ip_conntrack nfnetlink ipt_REJECT xt_tcpudp > iptable_filter ip_tables x_tables nfsd exportfs auth_rpcgss nfs fscache > nfs_acl lockd sunrpc bridge iscsi_tcp libiscsi_tcp ib_iser libiscsi2 > scsi_transport_iscsi2 scsi_transport_iscsi ib_srp ib_sdp ib_ipoib > ipoib_helper ipv6 xfrm_nalgo crypto_api rdma_ucm ib_ucm ib_uverbs ib_umad > rdma_cm ib_cm iw_cm ib_addr ib_sa ib_mad ib_core ext4 jbd2 crc16 dm_mirror > dm_multipath scsi_dh video hwmon backlight sbs i2c_ec button battery > asus_acpi acpi_memhotplug ac lp kvm_intel(U) kvm(U) i2c_i801 i2c_core > parport_pc ide_cd tg3 sg pcspkr cdrom parport i5000_edac edac_mc serio_raw > dm_raid45 dm_message dm_region_hash dm_log dm_mod dm_mem_cache usb_storage > ata_piix libata shpchp aacraid sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd > ehci_hcd > Oct 10 10:00:11 cvhlnx kernel: Pid: 12659, comm: qemu-kvm Tainted: G > 2.6.18-164.el5 #1 > Oct 10 10:00:11 cvhlnx kernel: RIP: 0010:[<ffffffff8827f613>] > [<ffffffff8827f613>] :kvm:kvm_flush_remote_tlbs+0xfb/0x109 > Oct 10 10:00:11 cvhlnx kernel: RSP: 0018:ffff81014f567878 EFLAGS: 00000297 > Oct 10 10:00:11 cvhlnx kernel: RAX: 0000000000000000 RBX: ffff81014f5678a8 > RCX: 0000000000000000 > Oct 10 10:00:11 cvhlnx kernel: RDX: 000000000003e0a3 RSI: 00000000000000ff > RDI: 00000000000000c0 > Oct 10 10:00:11 cvhlnx kernel: RBP: ffffffff8827e000 R08: 0000000000000004 > R09: 000000000000003c > Oct 10 10:00:11 cvhlnx kernel: R10: ffff81014f567888 R11: ffffffff8828fba0 > R12: 0000000000000000 > Oct 10 10:00:11 cvhlnx kernel: R13: 0000000000000000 R14: 0000000000000000 > R15: 000000000000000d > Oct 10 10:00:11 cvhlnx kernel: FS: 0000000042577940(0000) > GS:ffff810107f107c0(0000) knlGS:00000000f7fc46c0 > Oct 10 10:00:11 cvhlnx kernel: CS: 0010 DS: 002b ES: 002b CR0: > 000000008005003b > Oct 10 10:00:11 cvhlnx kernel: CR2: 00000000080dd1a0 CR3: 00000001332da000 > CR4: 00000000000026e0 > Oct 10 10:00:11 cvhlnx kernel: > Oct 10 10:00:11 cvhlnx kernel: Call Trace: > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8827f602>] > :kvm:kvm_flush_remote_tlbs+0xea/0x109 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff882833d0>] > :kvm:kvm_mmu_pte_write+0x1b0/0x295 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff88280f9e>] > :kvm:emulator_write_emulated_onepage+0xd4/0x171 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8828740f>] > :kvm:x86_emulate_memop+0x2bd1/0x3e6a > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff88284402>] > :kvm:paging64_page_fault+0x102/0x260 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff800114ee>] do_wp_page+0x821/0x918 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8829a3be>] > :kvm_intel:vmcs_readl+0x17/0x1c > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8828002f>] > :kvm:emulate_instruction+0xf6/0x286 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8829bd6f>] > :kvm_intel:handle_exception+0x138/0x21b > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8829cba3>] > :kvm_intel:vmx_vcpu_run+0x694/0x775 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff88288d1a>] > :kvm:preempt_notifier_register+0x53/0x79 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff88280384>] > :kvm:kvm_vcpu_ioctl+0x1c5/0xd0b > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8008a29b>] > __wake_up_common+0x3e/0x68 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8002e2f2>] __wake_up+0x38/0x4f > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8005121d>] wake_futex+0x45/0x4f > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff800a1f9d>] futex_wake+0x91/0xc7 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8003e2b0>] do_futex+0x282/0xc3f > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff80008d84>] > __handle_mm_fault+0x5f2/0xf99 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8014d83d>] __next_cpu+0x19/0x28 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff80097baf>] > __dequeue_signal+0x12d/0x193 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8008be71>] > default_wake_function+0x0/0xe > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff80097667>] > recalc_sigpending+0xe/0x25 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff800420a5>] do_ioctl+0x21/0x6b > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff800302ce>] vfs_ioctl+0x457/0x4b9 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff800a2d1a>] sys_futex+0x10d/0x12d > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8004c766>] sys_ioctl+0x59/0x78 > Oct 10 10:00:11 cvhlnx kernel: [<ffffffff8005d116>] system_call+0x7e/0x83 > Oct 10 10:00:11 cvhlnx kernel: > > > -- > Ehud Karni Tel: +972-3-7966-561 /"\ > Mivtach - Simon Fax: +972-3-7976-561 \ / ASCII Ribbon Campaign > Insurance agencies (USA) voice mail and X Against HTML Mail > http://www.mvs.co.il FAX: 1-815-5509341 / \ > GnuPG: 98EA398D <http://www.keyserver.net/> Better Safe Than Sorry > > _______________________________________________ > Linux-il mailing list > [email protected] > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il > _______________________________________________ Linux-il mailing list [email protected] http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
