July 2015 - Users - libvirt List Archives

[libvirt-users] ceph rbd pool and libvirt manageability (virt-install)
by Jelle de Jong 29 Aug '18

29 Aug '18

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello everybody, I created a rbd pool and activated it, but I can't seem to create volumes in it with virsh or virt-install? # virsh pool-dumpxml myrbdpool <pool type='rbd'> <name>myrbdpool</name> <uuid>2d786f7a-2df3-4d79-ae60-1535bcf1c6b5</uuid> <capacity unit='bytes'>6997998301184</capacity> <allocation unit='bytes'>10309227031</allocation> <available unit='bytes'>6977204658176</available> <source> <host name='ceph01.powercraft.nl' port='6789'/> <host name='ceph02.powercraft.nl' port='6789'/> <host name='ceph03.powercraft.nl' port='6789'/> <name>libvirt-pool</name> <auth type='ceph' username='libvirt'> <secret uuid='029a334e-ed57-4293-bb99-ffafa8867122'/> </auth> </source> </pool> # virt-install --version 1.0.1 # virsh --version 1.2.9 I ended using virsh edit ceph-test.powercraft.nl and making creating the disk manually. <disk type='network' device='disk'> <auth username='libvirt'> <secret type='ceph' uuid='029a334e-ed57-4293-bb99-ffafa8867122'/> </auth> <source protocol='rbd' name='libvirt-pool/kvm01-storage'> <host name='ceph01.powercraft.nl' port='6789'/> <host name='ceph02.powercraft.nl' port='6789'/> <host name='ceph03.powercraft.nl' port='6789'/> </source> <target dev='vdc' bus='virtio'/> </disk> I use virt-install a lot to define, import and undefine domains, how can I use virt-install to manage my rdb disks? Kind regards, Jelle de Jong -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iJwEAQECAAYFAlV1xlQACgkQ1WclBW9j5HkbPQP+PjNrzvlqysslOp2Yk7wH4Mxy 2sh2dn96G0KOAHEeEn3BN6IWlnD1TADZbHdpTtMwkdv48Xwn0sP1s+3QDM4pb3gP n+z+dVxS8FouDIy/eiso3IBCj3g4TWbEX8ZHqs3jKqe0lZgAXBzB9xYSUowcEBrZ ddkPbr8p8ozWyOG+9V8= =lkK7 -----END PGP SIGNATURE-----

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[libvirt-users] virRandomBits - not very random
by Brian Rak 01 Jun '18

01 Jun '18

I just ran into an issue where I had about 30 guests get duplicate mac addresses assigned. These were scattered across 30 different machines. Some debugging revealed that: 1) All the host machines were restarted within a couple seconds of each other 2) All the host machines had fairly similar libvirtd pids (within ~100 PIDs of each other) 3) Libvirt seeds the RNG using 'time(NULL) ^ getpid()' This perfectly explains why I saw so many duplicate mac addresses. Why is the RNG seed such a predictable value? Surely there has to be a better source of a random seed then the timestamp and the pid? The PID seems to me to be a very bad source of any randomness. I just ran a test across 60 of our hosts. 43 of them shared their PID with at least one other machine.

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[libvirt-users] Libvirt bite sized tasks
by Michal Privoznik 21 Mar '16

21 Mar '16

Dear lists, I've just started new wiki page which aim is to summarize small and trivial tasks, that starting contributors can take, investigate and implement. The aim is to give them something easy to start with while not scaring them out about complexity of our code. The page can be found here: http://wiki.libvirt.org/page/BiteSizedTasks The name is copied from qemu wiki: http://wiki.qemu.org/BiteSizedTasks Please, feel free to extend the list. I plan to use it in the future when interviewing GSoC candidates. Michal

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[libvirt-users] virDomainCoreDumpWithFormat files created as root
by NoxDaFox 19 Nov '15

19 Nov '15

Greetings, I am dumping a guest VM memory for inspection using the command "virDomainCoreDumpWithFormat" and the created files appear to belong to root (both user and group). I have searched around but didn't find any answer. Is there a way to instruct QEMU to create those files under a different user? Thank you.

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[libvirt-users] How to run libvirtd as non root user
by Anshul Arora (akarora) 31 Jul '15

31 Jul '15

Team, I note that libvertd runs as root user that is against the least privilege security model. root 307278 1 0 Jun20 ? 04:16:46 /usr/sbin/libvirtd -listen Appreciate pointers to alternate options that user could configure as a potential mitigation plan? Thanks, -Anshul

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[libvirt-users] libvirt-1.2.17 I can't define lxc container
by Marcin Mirosław 30 Jul '15

30 Jul '15

Hello! I'd like to set up my first lxc container using libvirt. I'd like to start using the simplest configuration and next add things I need. So I've got xml as below: <domain type='lxc'> <name>vm1</name> <memory>32768</memory> <os> <type>exe</type> <init>/init</init> </os> <vcpu>1</vcpu> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <features> <capabilities policy='on'> </capabilities> </features> <devices> <emulator>/usr/libexec/libvirt_lxc</emulator> <filesystem type='mount'> <source dir='/opt/vm-1-root'/> <target dir='/'/> </filesystem> <interface type='network'> <source network='default'/> </interface> <console type='pty' /> </devices> </domain> When I try to define container I'm getting: virsh # define /tmp/vm1.xml error: Failed to define domain from /tmp/vm1.xml error: invalid argument: could not find capabilities for ostype=exe domaintype=lxc I can't also find similar problem using web search engine. Maybe someone here can give me advice? Marcin # virsh -V Virsh command line tool of libvirt 1.2.17 See web site at http://libvirt.org/ Compiled with support for: Hypervisors: QEMU/KVM LXC VMWare ESX Test Networking: Remote Bridging Interface udev Nwfilter Storage: Dir Filesystem SCSI LVM Miscellaneous: Daemon Nodedev Secrets Debug Readline Modular

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[libvirt-users] Custom bios image for qemu
by Phil Tooley 30 Jul '15

30 Jul '15

Hello all, So I am trying to get a qemu guest to use a custom patched seabios image rather than the default /usr/share/qemu/bios.bin I have tried changing the domain config file to include either: <os> --SNIP-- <loader readonly='yes' type='rom'>/home/telemin/qemu/seabios_patched.bin</loader> </os> OR domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0' --SNIP-- <qemu:commandline> <qemu:arg value='-smbios'/> <qemu:arg value='file=/home/telemin/qemu/seabios_patched.bin'/> </qemu:commandline> --SNIP-- And neither of these approaches result in the new seabios_patched.bin being used. I am clearly missing something here, can anyone with some more experience tell me what it is please? Many Thanks Phil Tooley

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Re: [libvirt-users] Migrate Win2k3 to KVM
by Pierre Schweitzer 26 Jul '15

26 Jul '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, Regarding product activation, there's nothing I can do. You've to call Microsoft to re-activate your W2k3 licence. This is due to hardware change on virtualization. Regards, On 25/07/2015 20:54, Ruzsinszky Attila wrote: > Hi Pierre, > > I think the boot is working! ;-) I changed my image to IDE disk and > W2k3 started booting but wants Product Activation ... What can I do > with this? I can't login. I think it is a loop when I click on OK > button in the warning window. > > TIA, Ruzsi > - -- Pierre Schweitzer <pierre at reactos.org> System & Network Administrator Senior Kernel Developer ReactOS Deutschland e.V. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBAgAGBQJVtLm1AAoJEHVFVWw9WFsLyUsQAKv0EnHnYZ+PkWMuRPvCS4xa WnvnEkwIBxqrSXIG/b8mZ676mb+3ba9nZO22HZTKqqAndCrxQ46vsC87YSw9akcX +Dt1EC+BWMwclG4x/LSFM44uN6ZuqRqXNWIHL1B/fZ4DUO41RQDzX0yokc16+lxE OwzQQ5Rf8gYqHRBP/CdbrrPbgVnoa08ejRt0uwWhrMJtWwcFYz4YmPHBDSJV+GM7 lp6uU835mWDRR2DzIQ7gpDAAu3f1O2TPy15wFlidVn6XqjIcxIF9QqDj+ktQmyk+ im+PeVeqTGL75H2hyQMcx8z/kJm3ZktuqlTWbY4JvpNqBSodTYjVM9QnDsGf9JR7 Wvb6iEvxkLzGODXQ+YS2NOF4NJfTV0Wg1aodx5y+seMVlmAmFapq9QgNU39JTjg/ reMcVqjj3Es3DrQWWTZw0Mcvg2E/zxM3I58zg4Flylfxb/Krd3W4GRchwSx+/3u5 pA2Xb+Qq6Db/rWljVKHjN+LYW9llhr+/yu/W9+FYv2qJl0zZnHui+uDgljx1Byax urjYE2XCfSzDXvayVo7xTbSzpBi7MX0NlJZoK7kY7i4f7IV4ZSQZ+7owa05pH05v KQwjZzuSClFItIKARQ3JqXhi1ybmCH3jsoRbls6grX/tfkpzBrn1KspCFGMq7Fl/ LmU5uWVuO0o5YmQppckz =VNFx -----END PGP SIGNATURE-----

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Re: [libvirt-users] Migrate Win2k3 to KVM
by Pierre Schweitzer 26 Jul '15

26 Jul '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 25/07/2015 13:55, Ruzsinszky Attila wrote: > Hi Pierre, > > I got enough inspiration typing in the needed reg. keys. > > Here is a difference: What you wrote me: > > intelide >> { ErrorControl(REG_DWORD): 00000001 Group(REG_SZ): System Bus >> Extender Start(REG_DWORD): 00000000 Tag(REG_DWORD): 00000004 >> Type(REG_DWORD): 00000001 ImagePath(REG_SZ): >> system32\drivers\intelide.sys } >> > > My reg. keys: > > \ControlSet001\Services\IntelIde> ls Node has 0 subkeys and 5 > values size type value name [value if > type DWORD] 4 REG_DWORD <ErrorControl> 1 > [0x1] 40 REG_SZ <Group> 4 REG_DWORD <Start> > 4 [0x4] 4 REG_DWORD <Tag> 4 [0x4] 4 > REG_DWORD <Type> 1 [0x1] > > \ControlSet001\Services\IntelIde> cat Group Value <Group> of type > REG_SZ, data length 40 [0x28] System Bus Extender > > Do I have to change? Start and ImagePath are different. Let ImagePath, it should match your system more closely (and differences might be just in case, so no real matter). But you absolutely have to change Start. If Start isn't at 0x0, then, the driver will not be loaded at boot, and you won't be able to boot your Win2k3. - -- Pierre Schweitzer <pierre at reactos.org> System & Network Administrator Senior Kernel Developer ReactOS Deutschland e.V. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBAgAGBQJVs6/oAAoJEHVFVWw9WFsL8vcQAMd0C5zPHdwzoANR5peBl9mJ Z/9jY9/mF7E29yAmwKm0d3vXKgtja7v5vWar5rbyvSDpNKnUjQlwVdJEiGWwpcko 21xP7dC/IGGeEtn38wtfKOVZ0OQOAE1zs6YqbTDYSm1WgtTKNHvWjYQiPCwPmIYi cWqmXxF0SF2ADEiRjYlqZT2cd5Ersu+hy+bRlYGUxi4t2KhQf5vnz3kqZeY2BbDZ pG6xKRTvMDRqKiFdd3arUQ8ewJGjKvmKnGWz1ZgCvo75uzGoiuGmKDkIF6FJb3/+ +8nnFdYjd5b2NhryhIawxeZphAyMfIgt6Le1mFGgg2EBOD6xhFWv3WOLGSV775uu 29Q0+tPTE1+o8Ed1mtgaS1mRB/huPCMOMJtJS4sZ70wRdCz6i1pcYhQgXr44O1lz JzZxhnl79Zz0v/rlRIX2EF7t41rvIf//wgoA6jIhI7B15eGPlfGUaU2tMGGf8yGu yTcmuPKzfR1g8GJzYpNT8wFawEFOe3x2dRjA2kUdvUR1FziNdrUNxwpVOOBuOlX5 efVLf2ms+OOyIOnbSyzMOXL55K7a4HnHacCEjEvzvt60m4ZM7hcRGEE5L8Hi9LGP z2eDwRtefK6bL4Pg3hjkpBtsG42Pr6y5904MRGtLqwvmtWlTF+txafwahXQALpSi 5QEdWTWMQdI/LBZ/1LWz =tFUM -----END PGP SIGNATURE-----

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[libvirt-users] libvirt events and Ruby's EventMachine
by Jonathan Barber 24 Jul '15

24 Jul '15

Hello, I'm trying to adopt the Ruby event example from here https://www.libvirt.org/ruby/examples/event_test.rb to use EventMachine (a library for writing event driven programs). I have attached my attempt, which appears subscribe to events but never executes the callbacks I provide. I know this because when I reset domains (virsh reset VM) I see messages appear from the Handlers::notify_readable(), which should then invoke Libvirt::event_invoke_handle_callback() - but the output from the callbacks never appears. Typical output from the program looks like: add_handle fd=11 events=1 add_timer interval=-1 :notify_readable id=0 fd=11 events=1 update_timer id=0 interval=0 :notify_readable id=0 fd=11 events=1 :notify_readable id=0 fd=11 events=1 ... When I enabled debugging by setting LIBVIRT_DEBUG to 1 the output from libvirt appears to be the same as event_test.rb (excluding memory addresses). Can anyone see where I'm going wrong? Many thanks -- Jonathan Barber <jonathan.barber(a)gmail.com>

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