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1610 discussions

turning off udev for eth0
by James B. Byrne 04 Jan '12

04 Jan '12

I have set up a kvm host and configured a standard clone prototype for generating new guests. One persistent (pun intended) annoyance when cloning is the behaviour of udev with respect to the virtual network interface. The prototype is configured with just eth0 having a dedicated IP addr. When the prototype is cloned udev creates rules for both eth0 and eth1 in the clone. Because eth1 does not exist in the cloned guest one has to manually edit /etc/udev/rules.d/70-persistent-net.rules to get rid of the bogus entries and then restart the clone instance to have the changes take effect. All this does is return the new guest to the prototype eth0 configuration. Is there no way to alter udev's behaviour? Is udev even needed on a server system using virtual hardware? Altering the rules file not a big deal in itself but it adds needless busywork when setting up a new guest. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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iscsi target rescan means connections hang for five seconds
by Dennis Jacobfeuerborn 03 Jan '12

03 Jan '12

Hi, I'm starting to experiment with iscsi based volumes and while this works fine so far I ran into a problem. When I add a LUN to a target and refresh tgtd all i/o to that target seems to hang for five seconds. This is obviously less than ideal if the plan is to use the target for lots of guests. There is also the possibility to create one target with one LUN for each guest disk but that sounds like a management nightmare and the libvirt pool functions become useless. Is there a way to make this less intrusive? How do you guys cope with this issue? Regards, Dennis

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Pass iPhone/iTouch through kvm to Win7 VM?
by David McGuffey 30 Dec '11

30 Dec '11

Started this over on the main list, but remembered there is a CentOS-virt list also where this would be more appropriate. At home, I'm all Linux and only run Windows in VMs when I absolutely have to (e.g., TurboTax on Win7 during the tax filing season). Now I'm trying to get Win7 running in a VM on CentOS 5.6 and kvm to connect to my iTouch and iPhone so I can sync them with iTunes. When I plug the iPhone in and run lsusb I get an address of 05AC:12A0 Bus 006 Device 001: ID 0000:0000 Bus 007 Device 001: ID 0000:0000 Bus 005 Device 001: ID 0000:0000 Bus 002 Device 001: ID 0000:0000 Bus 001 Device 011: ID 05ac:12a0 Apple, Inc. Bus 001 Device 001: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 I put that into a hostdev block in the xml file that defines the VM. <hostdev mode='subsystem' type='usb' managed='no'> <source> <vendor id='0x05AC'/> <product id='0x12A0'/> </source> </hostdev> But...no joy. Win7 works in all other aspects...just won't connect to a usb device. Anyone get kvm to pass an iTouch or iPhone through to the VM so it can communicate with iTunes? I'm thinking this may be a permissions and SELinux issue...the usb device is owned by 'dave' (my CentOS login id), but the VM is owned by kvm (different owner and different SELinux context). I remember reading a lengthy discussion on how to get kvm to run as as a regular user...will have to go find it. Once I clean the host up and back up some data, I'll be migrating to CentOS 6.2. Does that version have more capability to deal with usb pass-through? Dave

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time drift with kvm guest
by thomas veymont 23 Dec '11

23 Dec '11

hello, a big time drift appears along time on a guest VM (time is going too slow on the guest). here the setup: ~ physical machine ~ Centos 6.0 x86_64 time set with ntpd Intel(R) Xeon(R) CPU X5650 /proc/cpuinfo shows the "constant_tsc" bit. ~ guest OS ~ Centos 6.0 x86_64 /proc/cpuinfo : processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 13 model name : QEMU Virtual CPU version (cpu64-rhel6) stepping : 3 cpu MHz : 2666.998 cache size : 4096 KB fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm up rep_good unfair_spinlock pni cx16 hypervisor lahf_lm bogomips : 5333.99 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual at boot time : [root@xxxx ~]# dmesg | egrep -i 'clock|tsc|time' kvm-clock: Using msrs 12 and 11 kvm-clock: cpu 0, msr 0:18c1901, boot clock ACPI: PM-Timer IO Port: 0xb008 kvm-clock: cpu 0, msr 0:1e16901, primary cpu clock ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 Switching to clocksource kvm-clock uhci_hcd 0000:00:01.2: setting latency timer to 64 rtc_cmos 00:01: setting system clock to 2011-12-15 09:33:28 UTC (1323941608) ata_piix 0000:00:01.1: setting latency timer to 64 Clocksource tsc unstable (delta = -547592984 ns) [root@xxxx ~]# cat /sys/devices/system/clocksource/clocksource0/available_clocksource kvm-clock acpi_pm [root@xxxx ~]# cat /sys/devices/system/clocksource/clocksource0/current_clocksource kvm-clock cpuspeed service is not active on the guest. acpid service is active on the guest (so it can be shut down from the host with "virsh shutdown"). reading Redhat documentation, I did everything ok (that is : guest clocksource set to "kvm-clock" and physical host has a CPU with constant_tsc flag + time set with NTP) : http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualiz… is that right ? does anyone have a suggestion about this problem ? thanks Tom

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Confusion over steps to add new logical volume to guest VM
by Jeff Boyce 20 Dec '11

20 Dec '11

Greetings - I am hoping someone can confirm for me the steps that I am using to add an LV to an existing Guest in KVM, and what I am seeing as I do some of these steps. My host (earth) is CentOS 6 and so is my guest (disect). The guest (disect) is my testing server. The main objective of what I am trying to do is add a logical volume for /var into my guest. The LV (lv_disectvar) is part of an existing VG (vg_mei) on the host. When I installed my guest OS, I could only select one LV from my host for the installation, so the entire OS was installed into lv_disectroot. I have added lv_disectvar into the storage pool available for VMs through the VirtManager GUI, and successfully added the lv_disectvar to the guest VM also through the VirtManager GUI. And now I want to move my /var over to the new LV. My notes show that I created the LV about two weeks ago, and added it to the guest VM last week. I don't see any other notes indicating that I did anything else with this LV. Today I finally got around to the task of moving /var from lv_disectroot over to lv_disectvar and editing fstab so that it would automount at boot. So here are the steps that I was going to do, and what I saw that made me pause. 1. Verify that the device is identified by the guest, and get the UUID for fstab. [jeffb@disect ~]$ ls -l /dev/disk/by-uuid total 0 lrwxrwxrwx. 1 root root 10 Dec 12 14:37 738923a4-c345-40bf-a850-4454caa152b6 -> ../../vda2 lrwxrwxrwx. 1 root root 9 Dec 12 14:37 db1230fb-a061-4ea4-9229-c5953d29aef8 -> ../../vdb <----lv_disectvar lrwxrwxrwx. 1 root root 10 Dec 12 14:37 db70a6db-3640-4392-b9ba-49839d6e4b45 -> ../../vda1 2. Create a mount point for /dev/vdb [root@disect jeffb]# mkdir /mnt/var 3. Mount the device [root@disect jeffb]# mount -t ext4 /dev/vdb /mnt/var 4. At this point I was going to move /var to /mnt/var but decided to check the mount first [root@disect mnt]# cd /mnt/var [root@disect var]# ls cache lib lock log lost+found run 5. When I saw the directories listed I was initially confused and thought I had possibly mounted the wrong device. But after double checking everything it appears I did not do anything wrong. As I mentioned above my notes do not show that I did anything with this LV other than create it and attach it to the guest VM. I am wondering about the source of these directories and all the subsequent files under them. My assumption is that these were created during the creation of the LVM and are part of its file system. Is that a correct assumption? How could I confirm this assumption? 6. Can I just add a /var directory to this and move my /var from /vda2 over to /vdb? 7. Then I would add the following line to my /etc/fstab in the guest disect UUID=db1230fb-a061-4ea4-9229-c5953d29aef8 /var ext4 defaults 1 2 8. I initially tried just adding the above line to my fstab, but realized after the guest VM hung on rebooting that /var is already mounted under /, and that of course caused a problem when booting. Thanks for any advice you can provide. Jeff Boyce Meridian Environmental www.meridianenv.com

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Re: [CentOS-virt] New Guess OS Creation Problem
by takizo 12 Dec '11

12 Dec '11

On Dec 12, 2011, at 11:33 PM, Stefan Hajnoczi wrote: > On Mon, Dec 12, 2011 at 3:19 PM, takizo <paulooi(a)takizo.com> wrote: >> >> On Dec 12, 2011, at 11:08 PM, Stefan Hajnoczi wrote: >> >>> On Mon, Dec 12, 2011 at 2:50 PM, takizo <paulooi(a)takizo.com> wrote: >>>> >>>> On Dec 12, 2011, at 6:56 PM, Stefan Hajnoczi wrote: >>>> >>>>> On Sun, Dec 11, 2011 at 4:40 PM, takizo <paulooi(a)takizo.com> wrote: >>>>>> LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -S -M rhel6.1.0 -enable-kvm -m 4096 -smp 1,sockets=1,cores=1,threads=1 -name database -uuid f3e9f320-7826-7e50-94bb-1833f7fd9dfb -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/database.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-reboot -drive file=/opt/cibai/database,if=none,id=drive-ide0-0-0,format=raw,cache=none,aio=threads -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=2 -drive file=/opt/ISO-Download/FreeBSD-8.2-RELEASE-amd64-disc1.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw,aio=threads -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=1 -netdev tap,fd=22,id=hostnet0 -device e1000,netdev=hostnet0,id=net0,mac=52:54:00:77:a5:a6,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:2,password -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 >>>>>> char device redirected to /dev/pts/6 >>>>>> Using CPU model "cpu64-rhel6" >>>>>> >>>>>> block I/O error in device 'drive-ide0-0-0': Invalid argument (22) >>>>> >>>>> Is /opt/cibai/database on a special filesystem or exotic storage setup? >>>>> >>>>> Please check dmesg on the host for any kernel messages regarding I/O errors. >>>>> >>>>> Please try reading the file on the host to check whether the I/O error >>>>> is happening on the host and not related to KVM: >>>>> >>>>> $ dd if=/opt/cibai/database of=/dev/null iflag=direct >>>>> >>>>> Stefan >>>> >>>> Hi Stefan, >>>> >>>> When I quit the installation, further see the error messages >>>> >>>> ide_dma_cancel: aiocb still pendingide_dma_cancel: BM_STATUS_DMAING still pendingide_dma_cancel: aiocb still pendingide_dma_cancel: BM_STATUS_DMAING still pendingide_dma_cancel: aiocb still pendingide_dma_cancel: BM_STATUS_DMAING still pendingide_dma_cancel: aiocb still pendingide_dma_cancel: BM_STATUS_DMAING still pendingide_dma_cancel: aiocb still pendingide_dma_cancel: BM_STATUS_DMAING still pendingide_dma_cancel: aiocb still pendingide_dma_cancel: BM_STATUS_DMAING still pending2011-12-12 22:47:51.427: shutting down >>>> >> >> Hi Stefan >> >>> Okay, so if I understand correctly you have CentOS 6.1 host running >>> FreeBSD and CentOS guest installs to emulated IDE drives. You're >>> getting failed I/O requests with EINVAL (22). You have verified that >>> dd if=/opt/vm/database.img of=/dev/null iflag=direct reads the image >>> file without errors. >> >> That is right, both also emulated on IDE drive >> >>> >>> Can you please try the CentOS guest install with a virtio-blk drive >>> instead of IDE? This should show whether this problem is related to >>> IDE or a general issue in how QEMU accesses the host file. >> >> Took your advice installed Centos on VirtIO drive and it's ok. >> >> Does it means it's IDE problem on the OS itself? > > The physical drive in your machine is probably fine. QEMU emulates an > IDE controller and disks for the guest. It looks like there is a bug > in the IDE emulation code inside QEMU which leads to these errors. I suspect the problem might came from QEMU, because day before it was working before before I upgrade to latest QEMU. > > In general virtio-blk is the recommended storage interface because it > delivers better performance. I'm not up-to-speed on how stable the > FreeBSD virtio drivers are but I think they are available if you > search. Unfortunately I am running FreeBSD 8.2, it's not natively supported yet. I guess now interim solutions will be duplicate from some current running VM. > >> 2011-12-12 23:15:06.759: starting up >> LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -S -M rhel6.1.0 -enable-kvm -m 1024 -smp 1,sockets=1,cores=1,threads=1 -name centos -uuid 0752c74e-1d51-d529-f66f-8df9a28670ed -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/centos.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-reboot -drive file=/opt/vm/centos.img,if=none,id=drive-virtio-disk0,format=raw,cache=none,aio=threads -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=2 -drive file=/opt/ISO-Download/CentOS-6.0-x86_64-minimal.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw,aio=threads -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=1 -netdev tap,fd=22,id=hostnet0,vhost=on,vhostfd=26 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:10:bc:5d,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -device usb-tablet,id=input0 -vnc 127.0.0.1:3,password -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 >> char device redirected to /dev/pts/9 >> Using CPU model "cpu64-rhel6" > > At this stage of debugging I would try enabling SystemTap probes in > QEMU related to block I/O. This produces a detailed log of what is > happening inside QEMU. > > strace -f -p $PID_OF_QEMU might also reveal how the I/O is failing. > > Finally, gdb could be of use. > > I'm not sure how familiar or easy it is for you to try these so let's > see if Kevin or someone else has other ideas before getting into the > nitty-gritty of finding out why you get EINVAL (22). I will see what I can grab and share in the list. Thanks Stefan > > Stefan

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Re: [CentOS-virt] New Guess OS Creation Problem
by takizo 12 Dec '11

12 Dec '11

On Dec 12, 2011, at 11:08 PM, Stefan Hajnoczi wrote: > On Mon, Dec 12, 2011 at 2:50 PM, takizo <paulooi(a)takizo.com> wrote: >> >> On Dec 12, 2011, at 6:56 PM, Stefan Hajnoczi wrote: >> >>> On Sun, Dec 11, 2011 at 4:40 PM, takizo <paulooi(a)takizo.com> wrote: >>>> LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -S -M rhel6.1.0 -enable-kvm -m 4096 -smp 1,sockets=1,cores=1,threads=1 -name database -uuid f3e9f320-7826-7e50-94bb-1833f7fd9dfb -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/database.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-reboot -drive file=/opt/cibai/database,if=none,id=drive-ide0-0-0,format=raw,cache=none,aio=threads -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=2 -drive file=/opt/ISO-Download/FreeBSD-8.2-RELEASE-amd64-disc1.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw,aio=threads -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=1 -netdev tap,fd=22,id=hostnet0 -device e1000,netdev=hostnet0,id=net0,mac=52:54:00:77:a5:a6,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:2,password -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 >>>> char device redirected to /dev/pts/6 >>>> Using CPU model "cpu64-rhel6" >>>> >>>> block I/O error in device 'drive-ide0-0-0': Invalid argument (22) >>> >>> Is /opt/cibai/database on a special filesystem or exotic storage setup? >>> >>> Please check dmesg on the host for any kernel messages regarding I/O errors. >>> >>> Please try reading the file on the host to check whether the I/O error >>> is happening on the host and not related to KVM: >>> >>> $ dd if=/opt/cibai/database of=/dev/null iflag=direct >>> >>> Stefan >> >> Hi Stefan, >> >> When I quit the installation, further see the error messages >> >> ide_dma_cancel: aiocb still pendingide_dma_cancel: BM_STATUS_DMAING still pendingide_dma_cancel: aiocb still pendingide_dma_cancel: BM_STATUS_DMAING still pendingide_dma_cancel: aiocb still pendingide_dma_cancel: BM_STATUS_DMAING still pendingide_dma_cancel: aiocb still pendingide_dma_cancel: BM_STATUS_DMAING still pendingide_dma_cancel: aiocb still pendingide_dma_cancel: BM_STATUS_DMAING still pendingide_dma_cancel: aiocb still pendingide_dma_cancel: BM_STATUS_DMAING still pending2011-12-12 22:47:51.427: shutting down >> Hi Stefan > Okay, so if I understand correctly you have CentOS 6.1 host running > FreeBSD and CentOS guest installs to emulated IDE drives. You're > getting failed I/O requests with EINVAL (22). You have verified that > dd if=/opt/vm/database.img of=/dev/null iflag=direct reads the image > file without errors. That is right, both also emulated on IDE drive > > Can you please try the CentOS guest install with a virtio-blk drive > instead of IDE? This should show whether this problem is related to > IDE or a general issue in how QEMU accesses the host file. Took your advice installed Centos on VirtIO drive and it's ok. Does it means it's IDE problem on the OS itself? 2011-12-12 23:15:06.759: starting up LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -S -M rhel6.1.0 -enable-kvm -m 1024 -smp 1,sockets=1,cores=1,threads=1 -name centos -uuid 0752c74e-1d51-d529-f66f-8df9a28670ed -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/centos.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-reboot -drive file=/opt/vm/centos.img,if=none,id=drive-virtio-disk0,format=raw,cache=none,aio=threads -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=2 -drive file=/opt/ISO-Download/CentOS-6.0-x86_64-minimal.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw,aio=threads -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=1 -netdev tap,fd=22,id=hostnet0,vhost=on,vhostfd=26 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:10:bc:5d,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -device usb-tablet,id=input0 -vnc 127.0.0.1:3,password -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 char device redirected to /dev/pts/9 Using CPU model "cpu64-rhel6" > > Stefan

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Re: [CentOS-virt] New Guess OS Creation Problem
by takizo 12 Dec '11

12 Dec '11

1 0

Re: [CentOS-virt] New Guess OS Creation Problem
by takizo 12 Dec '11

12 Dec '11

1 0

Re: [CentOS-virt] New Guess OS Creation Problem
by takizo 12 Dec '11

12 Dec '11

On Dec 12, 2011, at 6:56 PM, Stefan Hajnoczi wrote: > On Sun, Dec 11, 2011 at 4:40 PM, takizo <paulooi(a)takizo.com> wrote: >> LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -S -M rhel6.1.0 -enable-kvm -m 4096 -smp 1,sockets=1,cores=1,threads=1 -name database -uuid f3e9f320-7826-7e50-94bb-1833f7fd9dfb -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/database.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-reboot -drive file=/opt/cibai/database,if=none,id=drive-ide0-0-0,format=raw,cache=none,aio=threads -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=2 -drive file=/opt/ISO-Download/FreeBSD-8.2-RELEASE-amd64-disc1.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw,aio=threads -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=1 -netdev tap,fd=22,id=hostnet0 -device e1000,netdev=hostnet0,id=net0,mac=52:54:00:77:a5:a6,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:2,password -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 >> char device redirected to /dev/pts/6 >> Using CPU model "cpu64-rhel6" >> >> block I/O error in device 'drive-ide0-0-0': Invalid argument (22) > Hi Stefan, Thanks for responding. > Is /opt/cibai/database on a special filesystem or exotic storage setup? It's an direct attached disk. /dev/sdb1 134G 30G 98G 23% /opt > > Please check dmesg on the host for any kernel messages regarding I/O errors. I have checked dmesg, /var/log/messages and the one I pasted was from KVM storage. Not much error I can see > > Please try reading the file on the host to check whether the I/O error > is happening on the host and not related to KVM: > > $ dd if=/opt/cibai/database of=/dev/null iflag=direct I have read the files. The file seems ok. dd if=/opt/vm/database.img of=/dev/null iflag=direct 52428800+0 records in52428800+0 records out 26843545600 bytes (27 GB) copied, 70.3967 s, 381 MB/s I tried the installation again, same problem giving me IO error. Is there any other to show more verbose logging? 2011-12-12 22:40:33.625: starting up LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -S -M rhel6.1.0 -enable-kvm -m 4096 -smp 1,sockets=1,cores=1,threads=1 -name database -uuid 8490fea3-cb30-4ac5-2779-3681a77e7b03 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/database.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-reboot -drive file=/opt/vm/database.img,if=none,id=drive-ide0-0-0,format=raw,cache=none,aio=threads -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=2 -drive file=/opt/ISO-Download/FreeBSD-8.2-RELEASE-amd64-disc1.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw,aio=threads -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=1 -netdev tap,fd=22,id=hostnet0 -device e1000,netdev=hostnet0,id=net0,mac=52:54:00:c8:1c:b9,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:3,password -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 char device redirected to /dev/pts/7 Using CPU model "cpu64-rhel6" block I/O error in device 'drive-ide0-0-0': Invalid argument (22) block I/O error in device 'drive-ide0-0-0': Invalid argument (22) block I/O error in device 'drive-ide0-0-0': Invalid argument (22) > > Stefan

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