new config option:
iothread: 1|0
This enable iothread/dataplane support, to improve io performance on fast storages
Currently block jobs don't work yet, it's planned for qemu 2.2.
So it's better to not expose yet this option in gui.
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
the machine option is write in the snapshot (ok), but also in the running config (bad)
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
we should push to $devices array instead $cmd array,
because pci bridges need to be create before spice devices
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
multifunction device should be define without the .function
hostpci0: 00:00
example
-------
if 00:00.0
00:00.1
00:00.2
exists,
then we generate the multifunction devices
-device (pci-assign|vfio-pci),host=00:00.0,id=hostpci0.0,bus=...,addr=0x0.0,multifunction=on
-device (pci-assign|vfio-pci),host=00:00.1,id=hostpci0.1,bus=...,addr=0x0.1
-device (pci-assign|vfio-pci),host=00:00.2,id=hostpci0.2,bus=...,addr=0x0.2
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
hostpci0: .....,x-vga=on,pcie=1
x-vga require kernel 3.10 with vfio-vga support enable
if x-vga=on, we force vfio-pci device
pcie=1 choose the pciexpress bus (need q35 machine model)
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
q35 use pcie.0 root by default. so currently we can't start machine model q35.
we need to add 3 pci-bridge pci.0, pci.1, pci.2, to handle our devices.
pcie.0 does not support hotplug. so pci-bridge are defined at startup.
I use an pve-q35.cfg (mostly the same than q35-chipset.cfg from qemu docs).
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
this a new option queue=(\d+) to net interface
Allow to use more than 1 cpu for network stream, so this can improve network bandwidth,
when vhost-net cpu is the bottleneck
http://www.linux-kvm.org/page/Multiqueue#Enable_MQ_feature
-netdev tap,vhost=on,queues=N -device virtio-net-pci,mq=on,vectors=2N+2
host requirement
----------------
this require host kernel >= 3.8 (or qemu die at start)
linux guest requirement
-----------------------
kernel >= 3.8
manual enabling multiqueue
windows guest requierement
--------------------------
recent virtio-net driver
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
We simply add option iscsi if we have an initiator name. So we
never add this option multiple times, and it works with hotplug
in case someone plugs an 'iscsi:' drive later.
enable check if host support all cpu flags configured for the guests
this avoid some bad setup like Opteron vcpu on a intel host for example,
and avoid some bad live migrations
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
This reduce guest cpu speed if dirtied bytes is 50% more than the approx.amount of bytes that just got transferred since the last time we were in this routine.
qemu commit :
http://git.qemu.org/?p=qemu.git;a=commit;h=bde1e2ec2176c363c1783bf8887b6b1beb08dfee
tested with "stress -m 2 -c 2" under debian
without autoconvergence : downtime 12s - duration 12min
with autoconvergence : downtime 2s - duration 4min
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
add qxl2 (2monitors),qxl3 (3monitors),qxl4 (4monitors) vga type.
For linux, we only need 1 qxl card with more memory
For windows, we need 1 qxl card by monitor
Original Information from spice-mailing
"
You need to specify multiple devices for Windows VMs. This is what
libvirt gives me (via 'virsh domxml-to-native qemu argv DOMAIN_XML'):
<...> -vga qxl -global qxl-vga.ram_size=67108864 -global qxl-vga.vram_size=33554432 -device qxl,id=video1,ram_size=67108864,vram_size=33554432 -device qxl,id=video2,ram_size=67108864,vram_size=33554432 -device qxl,id=video3,ram_size=67108864,vram_size=33554432
For Linux VM, just one qxl device is OK but then it's advisable to
increase the available RAM:
<...> -vga qxl -global qxl-vga.ram_size=134217728 -global qxl-vga.vram_size=33554432
If you don't turn off surfaces, then you should increase vram size to
say 64 MB from current default of 32 MB.
"
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
This patch adds support for unsecure migration using a direct tcp connection
KVM <=> KVM instead of an extra SSH tunnel. Without ssh the limit is just the
bandwith and no longer the CPU / one single core.
You can enable this by adding:
migration_unsecure: 1
to datacenter.cfg
Examples using qemu 1.4 as migration with qemu 1.3 still does not work for me:
current default with SSH Tunnel VM uses 2GB mem:
Dec 27 21:10:32 starting migration of VM 105 to node 'cloud1-1202' (10.255.0.20)
Dec 27 21:10:32 copying disk images
Dec 27 21:10:32 starting VM 105 on remote node 'cloud1-1202'
Dec 27 21:10:35 starting ssh migration tunnel
Dec 27 21:10:36 starting online/live migration on localhost:60000
Dec 27 21:10:36 migrate_set_speed: 8589934592
Dec 27 21:10:36 migrate_set_downtime: 1
Dec 27 21:10:38 migration status: active (transferred 152481002, remaining 1938546688), total 2156396544) , expected downtime 0
Dec 27 21:10:40 migration status: active (transferred 279836995, remaining 1811140608), total 2156396544) , expected downtime 0
Dec 27 21:10:42 migration status: active (transferred 421265271, remaining 1669840896), total 2156396544) , expected downtime 0
Dec 27 21:10:44 migration status: active (transferred 570987974, remaining 1520152576), total 2156396544) , expected downtime 0
Dec 27 21:10:46 migration status: active (transferred 721469404, remaining 1369939968), total 2156396544) , expected downtime 0
Dec 27 21:10:48 migration status: active (transferred 875595258, remaining 1216057344), total 2156396544) , expected downtime 0
Dec 27 21:10:50 migration status: active (transferred 1034654822, remaining 1056931840), total 2156396544) , expected downtime 0
Dec 27 21:10:54 migration status: active (transferred 1176288424, remaining 915369984), total 2156396544) , expected downtime 0
Dec 27 21:10:56 migration status: active (transferred 1339734759, remaining 752050176), total 2156396544) , expected downtime 0
Dec 27 21:10:58 migration status: active (transferred 1503743261, remaining 588206080), total 2156396544) , expected downtime 0
Dec 27 21:11:02 migration status: active (transferred 1645097827, remaining 446906368), total 2156396544) , expected downtime 0
Dec 27 21:11:04 migration status: active (transferred 1810562934, remaining 281751552), total 2156396544) , expected downtime 0
Dec 27 21:11:06 migration status: active (transferred 1964377505, remaining 126033920), total 2156396544) , expected downtime 0
Dec 27 21:11:08 migration status: active (transferred 2077930417, remaining 0), total 2156396544) , expected downtime 0
Dec 27 21:11:09 migration speed: 62.06 MB/s - downtime 37 ms
Dec 27 21:11:09 migration status: completed
Dec 27 21:11:13 migration finished successfuly (duration 00:00:41)
TASK OK
with unsecure migration without SSH Tunnel:
Dec 27 22:43:14 starting migration of VM 105 to node 'cloud1-1203' (10.255.0.22)
Dec 27 22:43:14 copying disk images
Dec 27 22:43:14 starting VM 105 on remote node 'cloud1-1203'
Dec 27 22:43:17 starting online/live migration on 10.255.0.22:60000
Dec 27 22:43:17 migrate_set_speed: 8589934592
Dec 27 22:43:17 migrate_set_downtime: 1
Dec 27 22:43:19 migration speed: 1024.00 MB/s - downtime 1100 ms
Dec 27 22:43:19 migration status: completed
Dec 27 22:43:22 migration finished successfuly (duration 00:00:09)
TASK OK
That way we do not need to run qmp command to get the port.
Set spice ticket expire time to 30 (5 seconds seems a bit too short).
Coding style cleanups.
This add special hyper-v cpu flags for windows guests.
This improve performance and avoid some bsod related to timer.
(I currently disable the hv_vapic flag because I can't get it working).
I have tested all theses flags with: win2003, win2008R2, winxp, linux debian 64bit, on intel and amd physicals processor
It doesn't break live migration, because new cpu flags are not see by guests until a vm reset.
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
Need for win8 boot.
This flag was missing from rhel < 6.4 host kernel. It's ok now.
But it's also missing from kvm64 model. (It's exist in other cpu models, amd or intel).
So it's pretty safe to enable it.
If the host kernel is older, qemu filter the flag.
This also improve performance of winxp && win7 32 bits guests.
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
This reduce context switch with multicore guests.
Even if the host cpu don't have x2apic, it's working because qemu have an virtual x2apic implementation for guest.
We need in-kernel irqchip support for this, which is enable for kvm guest since qemu 1.3.
(I don't enable it if nokvm param is set)
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
This is experimental code, spice connections are not encryped and thus insecure.
We use ticket passwords for spice auth, and do direct spice connections to
the nodes instead of using a tunnel.
fix : Use of uninitialized value $bridgeid in numeric lt (<) at /usr/share/perl5/PVE/QemuServer.pm line 2774.
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
Seem that something have change in qemu.
iscsi qemu block driver need to use raw, or we get a segfault. (like rbd).
sheepdog works also with .raw, so we don't need anymore specific storage format, we can use raw.
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
A restored VM is never a template. Else we would need to create
base images after the restore, and not all storages supports base
images. Anyways, the user can easily convert the restored VM into a
template later.
If drive have bad sectors, the block job die.
we need to die if stats are empty to avoid this:
transferred: 21440086016 bytes remaining: 34668544 bytes total: 21474754560 bytes progression: 99.84 %
Use of uninitialized value $transferred in subtraction (-) at /usr/share/perl5/PVE/QemuServer.pm line 4611.
Use of uninitialized value $total in subtraction (-) at /usr/share/perl5/PVE/QemuServer.pm line 4611.
Use of uninitialized value $transferred in multiplication (*) at /usr/share/perl5/PVE/QemuServer.pm line 4612.
Use of uninitialized value $total in division (/) at /usr/share/perl5/PVE/QemuServer.pm line 4612.
clone failed: mirroring error: Illegal division by zero at /usr/share/perl5/PVE/QemuServer.pm line 4612.
Maybe it should be improved by catching qmp events, but doesn't seem to work for now
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
we need to remove drive after device has correctly by remove.
With this patch:
Windows : if drive is locked/"mounted", the hot-unplug fail and disk is accessible (100% safe)
Linux: without hotplug module : the hot-unplug fail and disk is accessible (100% safe)
Linux : with hotplug module : the hot-unplug work, but no verification is done is the drive is mounted
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
Currently we delete netdev before acpi hot-unplug.
if guest don't support hotplug, this break network.
We need to remove netdev after the device had be correctly unplug.(we check that device has been correctly removed)
So, If guest don't support hotplug, It's simply thrown a unplug error message without breaking the network
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
- usb-tablet on ehci is buggy
- convert to -device syntax
info usb before
----------------
Device 0.2, Port 1, Speed 12 Mb/s, Product QEMU USB Tablet
info usb after
--------------
Device 0.2, Port 1, Speed 12 Mb/s, Product QEMU USB Tablet
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
we need an id to allow hotplug
info pci before
---------------
Bus 0, device 1, function 2:
USB controller: PCI device 8086:7020
IRQ 11.
BAR4: I/O at 0xc040 [0xc05f].
id ""
info pci after
--------------
Bus 0, device 1, function 2:
USB controller: PCI device 8086:7020
IRQ 11.
BAR4: I/O at 0xc040 [0xc05f].
id "uhci"
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
if files (raw,qcow2) are a template, we forbid vm_start.
note : the readonly protection do already the job, but we need a clear message for users
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
if a qcow2 current is a template, we can't rollback to a previous snapshot.
(note that file readonly protection do already the job, but we need a clear error message for user)
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
return 1 if vm is a full template (all disks are base image)
return 2 if vm is a semi-tempalte (mix of base and non-base image)
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
qm template <vmid> [-disk virtio0]
convert a full vm to a template (or only a disk if specify)
we orignal disk to /base (file) or base- (lvm,rbd,sheepdog,nexenta)
we create a snapshot @base if storage need it for clone
we protect the volume or snapshot
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
We don't need to set balloon value and polling interval when a vm is coming from a livemigrate.
(Values are keep in guest memory)
So with autoballooning, this avoid to set the ballon size at ballon_min value when the vm is migrated
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
