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xen-users
Re: [Xen-users] Debian/squeeze: domU live migraton hangs
Replying to myself,
* Jean-Francois Malouin <Jean-Francois.Malouin@xxxxxxxxxxxxxxxxx> [20101102
14:53]:
>
> Hi,
>
> In view of the problems I was having with DomU network timeout after a
> live migration (I posted that problems here a while ago but never got
> anything except from private emails) I finally updated my
> Debian/Squeeze Dom0s last night to a new kernel, from 2.6.32-23 to
> 2.6.32-26.
>
> Now live migration just hangs...Any ideas?
Forgot to add the kernel log from the DomU (same kernel as dom0)
[10765.336002] BUG: soft lockup - CPU#0 stuck for 61s! [xenwatch:16]
[10765.336002] Modules linked in: xt_tcpudp iptable_filter ip_tables x_tables
snd_pcm snd_timer snd soundcore snd_page_alloc evdev pcspkr ext3 jbd mbcache
dm_mod raid1 md_mod xen_netfront xen_blkfront
[10765.336002] CPU 0:
[10765.336002] Modules linked in: xt_tcpudp iptable_filter ip_tables x_tables
snd_pcm snd_timer snd soundcore snd_page_alloc evdev pcspkr ext3 jbd mbcache
dm_mod raid1 md_mod xen_netfront
[10765.336002] Pid: 16, comm: xenwatch Not tainted 2.6.32-5-xen-amd64 #1
[10765.336002] RIP: e030:[<ffffffff81068705>] [<ffffffff81068705>]
lock_hrtimer_base+0x3a/0x3c
[10765.336002] RSP: e02b:ffff8800ffaadd70 EFLAGS: 00000246
[10765.336002] RAX: ffff880002a28680 RBX: 0000000000000000 RCX: 0000000000000006
[10765.336002] RDX: ffff8800fcd70850 RSI: ffff8800ffaadda0 RDI: ffff880002a2f820
[10765.336002] RBP: ffff880002a2f820 R08: 0000000000000000 R09: 0000000000000000
[10765.336002] R10: ffff8800fcd70c50 R11: ffffffff8122b649 R12: ffff8800ffaadda0
[10765.336002] R13: 0000000000000002 R14: ffff8800fcd708a0 R15: ffff8800ffaaddf0
[10765.336002] FS: 00007fedc5e08710(0000) GS:ffff8800039bf000(0000)
knlGS:0000000000000000
[10765.336002] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b
[10765.336002] CR2: 00007fae1857c120 CR3: 0000000002fe3000 CR4: 0000000000002660
[10765.336002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[10765.336002] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[10765.336002] Call Trace:
[10765.336002] [<ffffffff8106875b>] ? hrtimer_try_to_cancel+0x16/0x43
[10765.336002] [<ffffffff8122b649>] ? serial8250_suspend+0x0/0x48
[10765.336002] [<ffffffff81068794>] ? hrtimer_cancel+0xc/0x16
[10765.336002] [<ffffffffa0009147>] ? netfront_suspend+0x19/0x1d
[xen_netfront]
[10765.336002] [<ffffffff811f569b>] ? xenbus_dev_suspend+0x1f/0x3b
[10765.336002] [<ffffffff81233872>] ? dpm_suspend_start+0x359/0x45b
[10765.336002] [<ffffffff811f2ca0>] ? shutdown_handler+0x15f/0x25c
[10765.336002] [<ffffffff8130b475>] ? mutex_lock+0xd/0x31
[10765.336002] [<ffffffff811f47ad>] ? xenwatch_thread+0x117/0x14a
[10765.336002] [<ffffffff81065afe>] ? autoremove_wake_function+0x0/0x2e
[10765.336002] [<ffffffff811f4696>] ? xenwatch_thread+0x0/0x14a
[10765.336002] [<ffffffff81065831>] ? kthread+0x79/0x81
[10765.336002] [<ffffffff81012baa>] ? child_rip+0xa/0x20
[10765.336002] [<ffffffff81011d61>] ? int_ret_from_sys_call+0x7/0x1b
[10765.336002] [<ffffffff8101251d>] ? retint_restore_args+0x5/0x6
[10765.336002] [<ffffffff8102ddac>] ? pvclock_clocksource_read+0x3a/0x8b
[10765.336002] [<ffffffff81012ba0>] ? child_rip+0x0/0x20
googling digged this:
http://www.linux-archive.org/debian-kernel/442963-bug-600992-further-logs.html
which pretty much what I'm seeing on my systems.
jf
>
> Xen-related Debian packages (all from Debian repositary, except drbd
> which is from linbit):
>
> ~# dpkg -l \*xen\* | grep ^i
> drbd8-module-2.6.32-5-xen-amd64 2:8.3.8-0+2.6.32-26 RAID 1 over tcp/ip
> for Linux kernel module
> libxenstore3.0 4.0.1-1 Xenstore
> communications library for Xen
> linux-headers-2.6.32-5-common-xen 2.6.32-26 Common
> header files for Linux 2.6.32-5-xen
> linux-headers-2.6.32-5-xen-amd64 2.6.32-26 Header
> files for Linux 2.6.32-5-xen-amd64
> linux-image-2.6.32-5-xen-amd64 2.6.32-26 Linux
> 2.6.32 for 64-bit PCs, Xen dom0 support
> xen-hypervisor-4.0-amd64 4.0.1-1 The Xen
> Hypervisor on AMD64
> xen-qemu-dm-4.0 4.0.1-1 Xen Qemu
> Device Model virtual machine hardware emulator
> xen-tools 4.2-1 Tools to manage
> Xen virtual servers
> xen-utils-4.0 4.0.1-1 XEN
> administrative tools
> xen-utils-common 4.0.0-1 XEN
> administrative tools - common files
> xenstore-utils 4.0.1-1 Xenstore
> utilities for Xen
> xenwatch 0.5.4-2
> Virtualization utilities, mostly for Xen
>
> ~# xm info
> host : dom0
> release : 2.6.32-5-xen-amd64
> version : #1 SMP Wed Oct 20 02:22:18 UTC 2010
> machine : x86_64
> nr_cpus : 8
> nr_nodes : 2
> cores_per_socket : 4
> threads_per_core : 1
> cpu_mhz : 2000
> hw_caps :
> bfebfbff:28100800:00000000:00001b40:009ce3bd:00000000:00000001:00000000
> virt_caps : hvm hvm_directio
> total_memory : 12279
> free_memory : 3934
> node_to_cpu : node0:0-3
> node1:4-7
> node_to_memory : node0:1996
> node1:1938
> node_to_dma32_mem : node0:1995
> node1:0
> max_node_id : 1
> xen_major : 4
> xen_minor : 0
> xen_extra : .1
> xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
> hvm-3.0-x 86_32p hvm-3.0-x86_64
> xen_scheduler : credit
> xen_pagesize : 4096
> platform_params : virt_start=0xffff800000000000
> xen_changeset : unavailable
> xen_commandline : dom0_mem=2048M dom0_max_vcpus=2 loglvl=all
> guest_loglvl=all console=tty0
> cc_compiler : gcc version 4.4.5 20100824 (prerelease) (Debian
> 4.4.4-11)
> cc_compile_by : waldi
> cc_compile_domain : debian.org
> cc_compile_date : Fri Sep 3 15:38:12 UTC 2010
> xend_config_format : 4
>
> thanks
> jf
> --
> <° >< Jean-François Malouin McConnell Brain Imaging Centre
> Systems/Network Administrator Montréal Neurological Institute
> 3801 Rue University, Suite WB219 Montréal, Québec, H3A 2B4
> Phone: 514-398-8924 Fax: 514-398-8948
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
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