[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] Xen bridging issue.
HelloI sent an email before about bridging not working in domU using Debian 8.1 and XEN 4.4.1. It was not the network card "igb" as I first taught.I managed to get bridging working in DOMU if is set the limit of cpu's in dom0 to 14, this is from /etc/default/grub when it works ok: GRUB_CMDLINE_XEN="dom0_max_vcpus=14 dom0_vcpus_pin"Is there any known issue/limitations running xen with more with more than 14 CPU cores in dom0? The cpu in question is: processor : 16 vendor_id : GenuineIntel cpu family : 6 model : 63 model name : Intel(R) Xeon(R) CPU E5-2650 v3 @ 2.30GHz stepping : 2 microcode : 0x2d cpu MHz : 2298.718 cache size : 25600 KB physical id : 0 siblings : 17 core id : 11 cpu cores : 9 apicid : 22 initial apicid : 22 fpu : yes fpu_exception : yes cpuid level : 15 wp : yesflags : fpu de tsc msr pae mce cx8 apic sep mca cmov pat clflush acpi mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc rep_good nopl nonstop_tsc eagerfpu pni pclmulqdq monitor est ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm ida arat epb xsaveopt pln pts dtherm fsgsbase bmi1 avx2 bmi2 erms bogomips : 4597.43 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: If I set it to 17 in dom0: GRUB_CMDLINE_XEN="dom0_max_vcpus=17 dom0_vcpus_pin" Then I get this oops whan I try to boot domU with 40 vcpu's. [ 1.588313] systemd-udevd[255]: starting version 215 [ 1.606097] xen_netfront: Initialising Xen virtual ethernet driver[ 1.648172] blkfront: xvda2: flush diskcache: enabled; persistent grants: enabled; indirect descriptors: disabled; [ 1.649190] blkfront: xvda1: flush diskcache: enabled; persistent grants: enabled; indirect descriptors: disabled; [ 1.649705] Setting capacity to 2097152 [ 1.649716] xvda2: detected capacity change from 0 to 1073741824 [ 1.653540] xen_netfront: can't alloc rx grant refs [ 1.653547] net eth1: only created 17 queues[ 1.654027] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 [ 1.654033] IP: [<ffffffffa0063cc4>] netback_changed+0x964/0xee0 [xen_netfront] [ 1.654041] PGD 0 [ 1.654044] Oops: 0000 [#1] SMP[ 1.654048] Modules linked in: xen_netfront(+) xen_blkfront(+) crct10dif_pclmul crct10dif_common crc32c_intel [ 1.654057] CPU: 3 PID: 209 Comm: xenwatch Not tainted 3.16.0-4-amd64 #1 Debian 3.16.7-ckt11-1+deb8u3 [ 1.654061] task: ffff880faf477370 ti: ffff880faf478000 task.ti: ffff880faf478000 [ 1.654064] RIP: e030:[<ffffffffa0063cc4>] [<ffffffffa0063cc4>] netback_changed+0x964/0xee0 [xen_netfront] [ 1.654071] RSP: e02b:ffff880faf47be20 EFLAGS: 00010202[ 1.654074] RAX: 0000000000000000 RBX: ffff880002a729c0 RCX: 0000000000000001 [ 1.654077] RDX: 000000000066785c RSI: ffff880002a72a58 RDI: 0000000000003f1f [ 1.654080] RBP: ffff880faa44e000 R08: ffffc90006240000 R09: ffffea0036d3f180 [ 1.654083] R10: 000000000000251e R11: 0000000000000000 R12: ffff880faa44f000 [ 1.654086] R13: ffff880002a72a58 R14: 00000000000729c0 R15: ffff880fab6f4000 [ 1.654093] FS: 0000000000000000(0000) GS:ffff880fb7060000(0000) knlGS:0000000000000000 [ 1.654096] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033[ 1.654099] CR2: 0000000000000018 CR3: 0000000001813000 CR4: 0000000000042660 [ 1.654102] Stack:[ 1.654104] ffff880faf5aec00 ffff880f0000000f 0000001100000001 ffff880faf5aec00 [ 1.654109] ffff880002a6b041 ffff880002a6af84 00000001af561000 0000001100000001 [ 1.656945] ffff8800028e9df1 ffff8800028e8880 ffff880faf47beb8 ffffffff8135b9e0 [ 1.656945] Call Trace: [ 1.656945] [<ffffffff8135b9e0>] ? unregister_xenbus_watch+0x220/0x220 [ 1.656945] [<ffffffff8135ba78>] ? xenwatch_thread+0x98/0x140 [ 1.656945] [<ffffffff810a7a40>] ? prepare_to_wait_event+0xf0/0xf0 [ 1.656945] [<ffffffff81087f7d>] ? kthread+0xbd/0xe0 [ 1.656945] [<ffffffff81087ec0>] ? kthread_create_on_node+0x180/0x180 [ 1.656945] [<ffffffff815114d8>] ? ret_from_fork+0x58/0x90 [ 1.656945] [<ffffffff81087ec0>] ? kthread_create_on_node+0x180/0x180[ 1.656945] Code: 48 89 c6 e9 bd fd ff ff 48 8b 3c 24 48 c7 c2 b3 52 06 a0 be f4 ff ff ff 31 c0 e8 38 61 2f e1 e9 54 ff ff ff 48 8b 43 20 4c 89 ee <48> 8b 78 18 e8 13 63 2f e1 85 c0 0f 88 b0 fd ff ff 48 8b 43 20 [ 1.656945] RIP [<ffffffffa0063cc4>] netback_changed+0x964/0xee0 [xen_netfront] [ 1.656945] RSP <ffff880faf47be20> [ 1.656945] CR2: 0000000000000018 [ 1.656945] ---[ end trace d92264e4041d27a1 ]--- Best regards Johnny _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxx http://lists.xen.org/xen-users
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