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[Qemu-devel] [Bug 432154] Re: dynamic block device attach/detach not fun
From: |
nix_user |
Subject: |
[Qemu-devel] [Bug 432154] Re: dynamic block device attach/detach not functional with karmic KVM |
Date: |
Tue, 20 Dec 2011 15:28:42 -0000 |
I spent about 3 hr before I can find correct command to attach iSCSI /dev/vda
to my instance
euca-attach-volume vol-59A00634 -d /dev/vdb -i i-511908A5
I hope this tip save time for somebody.
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https://bugs.launchpad.net/bugs/432154
Title:
dynamic block device attach/detach not functional with karmic KVM
Status in QEMU:
Fix Released
Status in “eucalyptus” package in Ubuntu:
Invalid
Status in “libvirt” package in Ubuntu:
Invalid
Status in “qemu-kvm” package in Ubuntu:
Fix Released
Status in “eucalyptus” source package in Karmic:
Invalid
Status in “libvirt” source package in Karmic:
Invalid
Status in “qemu-kvm” source package in Karmic:
Fix Released
Bug description:
The version of KVM currently in karmic does not appear to have a fully
functional dynamic block device attach/detach:
outside VM:
---------------------------------------------------------------
address@hidden:/root# virsh list
Connecting to uri: qemu:///system
Id Name State
----------------------------------
1 i-512A0927 running
address@hidden:/root# ls -l /tmp/foobar
-rw-r--r-- 1 root root 33554432 2009-09-17 15:09 /tmp/foobar
address@hidden:/root# cat /tmp/meh
<disk type='block'><driver name='phy'/><source dev='/tmp/foobar'/><target
dev='sdb'/></disk>
address@hidden:/root# virsh attach-device 1 /tmp/meh
Connecting to uri: qemu:///system
Device attached successfully
address@hidden:/root#
inside VM (with acpiphp loaded)
--------------------------------------------------------------
address@hidden:/lib/modules# dmesg
[ 1482.978287] pci 0000:00:06.0: reg 10 io port: [0x00-0xff]
[ 1482.978327] pci 0000:00:06.0: reg 14 32bit mmio: [0x000000-0x0003ff]
[ 1482.978365] pci 0000:00:06.0: reg 18 32bit mmio: [0x000000-0x001fff]
[ 1482.978673] pci 0000:00:02.0: BAR 6: bogus alignment [0x0-0x0] flags 0x2
[ 1482.978750] decode_hpp: Could not get hotplug parameters. Use defaults
[ 1482.982167] sym53c8xx 0000:00:06.0: enabling device (0000 -> 0003)
[ 1482.982274] sym53c8xx 0000:00:06.0: PCI INT A -> Link[LNKB] -> GSI 10
(level, high) -> IRQ 10
[ 1482.984011] sym1: <895a> rev 0x0 at pci 0000:00:06.0 irq 10
[ 1482.989722] sym1: No NVRAM, ID 7, Fast-40, LVD, parity checking
[ 1482.992017] sym1: SCSI BUS has been reset.
[ 1483.001733] scsi6 : sym-2.2.3
address@hidden:/lib/modules#
----------------------------------------------------------------
libvirt/kvm appear to believe that the block device has been attached,
but the device is not showing up in the guest (this process with the
same VM/kernel works on Jaunty). Apparmor is disabled.
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