Hello Cedric,
Please let me know if you need any additional information. I would also be able to help
you test patches regarding this issue.
I'm looking forward to your findings.
Thanks,
Frank
________________________________
Van: Cedric Bosdonnat <cbosdonnat(a)suse.com>
Verzonden: donderdag 23 maart 2017 13:28:57
Aan: Frank Schreuder; libvir-list(a)redhat.com
Onderwerp: Re: [libvirt] Live attaching a disk to a VM fails with apparmor enabled
Hello Frank,
I'm currently investigating some apparmor-related bug with namespaces. This one
is surely related. I'll look into it when I'm done with the one I'm working
on.
--
Cedric
On Thu, 2017-03-23 at 12:07 +0000, Frank Schreuder wrote:
Hello,
I'm running libvirt 3.1.0 on a Debian 8 server. I installed apparmor and configured
libvirt to use apparmor as
security driver.
After booting a VM, virsh dumpxml shows an apparmor seclabel.
As soon as I try to attach a second disk to the VM, apparmor blocks this.
virsh attach-device test-vps /tmp/virshXmlDefinition
error: Failed to attach device from /tmp/virshXmlDefinition
error: operation failed: Could not open '/mnt/images/disk2.raw': Permission
denied
Syslogs shows me the following:
Mar 22 17:45:20 vps0 kernel: [1136647.318314] audit: type=1400 audit(1490201120.577:30):
apparmor="DENIED"
operation="open"
profile="libvirt-5747e4db-a3b7-fd69-ca89-00007b0bf859"
name="/mnt/images/disk2.raw" pid=13453
comm="kvm" requested_mask="r" denied_mask="r" fsuid=996
ouid=33
Mar 22 17:45:20 vps0 kernel: [1136647.325155] audit: type=1400 audit(1490201120.577:31):
apparmor="DENIED"
operation="open"
profile="libvirt-5747e4db-a3b7-fd69-ca89-00007b0bf859"
name="/mnt/images/disk2.raw" pid=13453
comm="kvm" requested_mask="rw" denied_mask="rw" fsuid=996
ouid=33
Mar 22 17:45:20 vps0 libvirtd[10282]: 2017-03-22 16:45:20.596+0000: 10283: error :
qemuMonitorTextAddDrive:1968 :
operation failed: Could not open '/mnt/images/disk2.raw': Permission denied
In the VM specific apparmor file
/etc/apparmor.d/libvirt/libvirt-5747e4db-a3b7-fd69-ca89-00007b0bf859.files I see:
"/mnt/images/disk1.raw" rw,
Which is my primary VM disk, I expected a virsh attach-device to append
/mnt/images/disk2.raw to this file and
reload/refresh the apparmor profile?
I'm not able to attach a live disk to a running VM with apparmor. Am I missing
something? Or is this a bug/missing
feature in libvirt?
Thanks,
Frank
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