Check again - it's just around the corner. Just follow the scorched signs in the CentOS discussion mailing list archives.
As far as I'm aware: 1. -164 was introduced in a haste to fix security holes. It has known issues with nfs v4+tcp+xen, maybe others. 2. kvm was introduced as "technology preview" (AKA "beta") in 5.4, so I wouldn't quite expect it to be well tested on 5.3. --Amos 2009/10/21 Hetz Ben Hamo <[email protected]>: > 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 > > _______________________________________________ > 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
