Update 4? last I checked, CentOS had only Update 3.. Hetz On Tue, Oct 20, 2009 at 5:32 PM, Ohad Levy <[email protected]> wrote:
> 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 > -- Skepticism is the lazy person's default position. my blog (hebrew): http://benhamo.org
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