** Attachment added: "bionic-uvt-kvm.xml"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1831763/+attachment/5268958/+files/bionic-uvt-kvm.xml
** Also affects: libvirt (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1831763
Title:
Unable to create virtual machine with large amounts memory / cpu
Status in libvirt package in Ubuntu:
New
Status in linux package in Ubuntu:
New
Bug description:
System: Intel SDP, Xeon(R) Gold 6252 CPU, 96 Core, 1708.5 GiB Memory (DCPMM
Optane Memory)
Series: Bionic
Kernel: 4.15.0-51-generic #55
Arch: AMD64
Libvirt: 4.0.0-1ubuntu8.10
Problem:
While testing this machine , we have discovered that virtual machines
created via libvirt are unable to start when assigning 50 cores & 1
Terrabyte of memory to them.
The following tests were done using the disco cloud image, attempting
to boot a disco VM with 50 cores and 1 TB of memory. The full console
log is attached to this bug.
[ 15.229175] NET: Registered protocol family 10
[ 15.231941] Segment Routing with IPv6
[ 15.232523] NET: Registered protocol family 17
[ 15.233141] BUG: unable to handle kernel paging request at ffff9d35c5a16880
[ 15.233392] Key type dns_resolver registered
[ 15.235863] #PF error: [PROT] [WRITE] [RSVD]
[ 15.235863] PGD fcf1e05067 P4D fcf1e05067 PUD 10788a6c063 PMD
8000010785a000e3
[ 15.236967] Oops: 000b [#1] SMP PTI
[ 15.242373] CPU: 26 PID: 456 Comm: kworker/26:1 Not tainted
5.0.0-16-generic #17-Ubuntu
[ 15.242373] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.10.2-1ubuntu1 04/01/2014
[ 15.242373] Workqueue: ata_sff ata_sff_pio_task
[ 15.242373] RIP: 0010:ioread32_rep+0x41/0x70
[ 15.242373] Code: 48 8d 54 8e 04 8b 07 89 06 48 83 c6 04 48 39 d6 75 f3 5d
c3 48 81 ff 00 00 01 00 76 27 0f b7 c7 89 c2 0f 1f 44 00 00 48 89 f7 <f3> 6d 5d
c3 31 ff 48 85 c9 74 dd ed 89 04 be 48 83 c7 01 48 39 f9
[ 15.242373] RSP: 0000:ffffa9bbda423d48 EFLAGS: 00010006
[ 15.255328] RAX: 00000000000001f0 RBX: 0000000000000200 RCX:
0000000000000080
[ 15.255328] RDX: 00000000000001f0 RSI: ffff9d35c5a16880 RDI:
ffff9d35c5a16880
[ 15.255328] RBP: ffffa9bbda423d48 R08: 0000000000000000 R09:
006666735f617461
[ 15.255328] R10: 8080808080808080 R11: 0000000000000001 R12:
ffff9d35c5a16880
[ 15.255328] R13: 00000000000101f0 R14: 0000000000000000 R15:
ffff9d35c5a16368
[ 15.255328] FS: 0000000000000000(0000) GS:ffff9d35e4e80000(0000)
knlGS:0000000000000000
[ 15.255328] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 15.255328] CR2: ffff9d35c5a16880 CR3: 000000fcf140e001 CR4:
00000000003606e0
[ 15.255328] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 15.255328] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 15.255328] Call Trace:
[ 15.255328] ata_sff_data_xfer32+0x8e/0x160
[ 15.255328] ? __switch_to_asm+0x34/0x70
[ 15.255328] ata_pio_sector+0xb4/0x120
[ 15.255328] ata_pio_sectors+0x7e/0x90
[ 15.255328] ata_sff_hsm_move+0x228/0x690
[ 15.255328] ? __switch_to+0x96/0x4e0
[ 15.255328] ? __switch_to_asm+0x40/0x70
[ 15.255328] ? __switch_to_asm+0x34/0x70
[ 15.255328] ? __switch_to_asm+0x40/0x70
[ 15.255328] ata_sff_pio_task+0xcc/0x1b0
[ 15.255328] process_one_work+0x20f/0x410
[ 15.255328] worker_thread+0x34/0x400
[ 15.255328] kthread+0x120/0x140
[ 15.255328] ? process_one_work+0x410/0x410
[ 15.255328] ? __kthread_parkme+0x70/0x70
[ 15.255328] ret_from_fork+0x35/0x40
[ 15.255328] Modules linked in:
[ 15.255328] CR2: ffff9d35c5a16880
[ 15.255328] ---[ end trace 047af05ecf201244 ]---
[ 15.255328] RIP: 0010:ioread32_rep+0x41/0x70
[ 15.255328] Code: 48 8d 54 8e 04 8b 07 89 06 48 83 c6 04 48 39 d6 75 f3 5d
c3 48 81 ff 00 00 01 00 76 27 0f b7 c7 89 c2 0f 1f 44 00 00 48 89 f7 <f3> 6d 5d
c3 31 ff 48 85 c9 74 dd ed 89 04 be 48 83 c7 01 48 39 f9
[ 15.255328] RSP: 0000:ffffa9bbda423d48 EFLAGS: 00010006
[ 15.283402] RAX: 00000000000001f0 RBX: 0000000000000200 RCX:
0000000000000080
[ 15.283402] RDX: 00000000000001f0 RSI: ffff9d35c5a16880 RDI:
ffff9d35c5a16880
[ 15.283402] RBP: ffffa9bbda423d48 R08: 0000000000000000 R09:
006666735f617461
[ 15.283402] R10: 8080808080808080 R11: 0000000000000001 R12:
ffff9d35c5a16880
[ 15.283402] R13: 00000000000101f0 R14: 0000000000000000 R15:
ffff9d35c5a16368
[ 15.283402] FS: 0000000000000000(0000) GS:ffff9d35e4e80000(0000)
knlGS:0000000000000000
[ 15.283402] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 15.283402] CR2: ffff9d35c5a16880 CR3: 000000fcf140e001 CR4:
00000000003606e0
[ 15.283402] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 15.283402] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
Steps to Reproduce:
1.) Download latest cloud image.
2.) qemu-img convert -O qcow2 <Cloud-IMG>
3.) qemu-img resize <IMG.QCOW2> +5GB
4.) Generate Cloud Config to allow login
cat > config <<EOF
#cloud-config
password: ubuntu
chpasswd: { expire: False }
ssh_pwauth: True
EOF
5.) cloud-localds config.img config
6.) sudo virt-install --connect=qemu:///system --name virt-test-created --ram
1096000 --vcpus=50 --os-type=linux --disk ubuntu.img,device=disk,bus=virtio
--disk config.img,device=cdrom --graphics none --import
Alternatively, using uvtool binaries, uvt-kvm yields a somewhat similar yet
not identical outcome,
Steps to Reproduce with uvtool:
1.) $uvt-simplestreams-libvirt sync release=disco arch=amd64
2.) $uvt-kvm create test rehlease=disco arch=amd64 --memory 1096000 --cpu 50
The console reveals that the vm will boot slightly longer, but appears
to hang at this point.
[ 18.085051] Magic number: 7:675:581
[ 18.086091] memory memory6696: hash matches
[ 18.086973] memory memory6015: hash matches
[ 18.087924] memory memory4574: hash matches
[ 18.088821] memory memory3738: hash matches
[ 18.089746] memory memory2647: hash matches
[ 18.090690] memory memory1361: hash matches
[ 18.091573] memory memory574: hash matches
[ 18.092660] rtc_cmos 00:00: setting system clock to 2019-06-05T12:34:17
UTC (1559738057)
[ 18.097307] Freeing unused decrypted memory: 2040K
[ 18.099181] Freeing unused kernel image memory: 2576K
[ 18.109790] Write protecting the kernel read-only data: 22528k
[ 18.112213] Freeing unused kernel image memory: 2016K
[ 18.114252] Freeing unused kernel image memory: 1852K
[ 18.135085] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 18.136415] x86/mm: Checking user space page tables
[ 18.148461] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 18.149546] Run /init as init process
Loading, please wait...
Starting version 240
There does not appear to be a stack trace when using uvtools, versus creating
the VM manually via downloading the cloud img and using virt-inst.
---
ProblemType: Bug
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jun 5 14:43 seq
crw-rw---- 1 root audio 116, 33 Jun 5 14:43 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord':
'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 18.04
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0b1f:03e9 Insyde Software Corp.
Bus 001 Device 002: ID 0000:0001
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Intel Corporation S2600WFD
Package: linux (not installed)
PciMultimedia:
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=C.UTF-8
SHELL=/bin/bash
ProcFB: 0 astdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-51-generic
root=UUID=6d07bb91-3c5d-4851-86fa-2e5843fd3cae ro
ProcVersionSignature: Ubuntu 4.15.0-51.55-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-51-generic N/A
linux-backports-modules-4.15.0-51-generic N/A
linux-firmware 1.173.6
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
Tags: bionic uec-images
Uname: Linux 4.15.0-51-generic x86_64
UnreportableReason: This report is about a package that is not installed.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm audio cdrom dialout dip floppy libvirt lxd netdev plugdev
sudo video
_MarkForUpload: False
dmi.bios.date: 02/27/2019
dmi.bios.vendor: Intel Corporation
dmi.bios.version: SE5C620.86B.0D.01.0395.022720191340
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: S2600WFD
dmi.board.vendor: Intel Corporation
dmi.board.version: J46732-610
dmi.chassis.asset.tag: ....................
dmi.chassis.type: 23
dmi.chassis.vendor: ...............................
dmi.chassis.version: ..................
dmi.modalias:
dmi:bvnIntelCorporation:bvrSE5C620.86B.0D.01.0395.022720191340:bd02/27/2019:svnIntelCorporation:pnS2600WFD:pvr....................:rvnIntelCorporation:rnS2600WFD:rvrJ46732-610:cvn...............................:ct23:cvr..................:
dmi.product.family: Family
dmi.product.name: S2600WFD
dmi.product.version: ....................
dmi.sys.vendor: Intel Corporation
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