Re: [libvirt] Live attaching a disk to a VM fails with apparmor enabled

On 24 Mar 2017, at 09:17, Guido Günther <agx(a)sigxcpu.org&gt; wrote: > On Thu, Mar 23, 2017 at 01:28:57PM +0100, Cedric Bosdonnat wrote: > 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. Assuming you're running the Jessie Kernel its likely: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=805002 To make sure it's the kernel and not libvirt have a look at: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=805002#51 Cheers, -- Guido > > -- > 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 >> -- >> libvir-list mailing list >> libvir-list(a)redhat.com >> https://www.redhat.com/mailman/listinfo/libvir-list > > -- > libvir-list mailing list > libvir-list(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvir-list >