Description of problem: When condor-vm-gahp runs a KVM/VM job, the following error can be seen in /var/log/message: SELinux is preventing condor_vm-gahp (initrc_t) "setattr" to ./testvm.img (svirt_image_t). For complete SELinux messages. run sealert -l e57ca993-1ff2-45c2-bd24-ae2a0d7e573e -------------------------------------------- Excerpts from the output of sealert: host=... type=AVC msg=audit(1320237390.206:506): avc: denied { setattr } for pid=675 comm="condor_vm-gahp" name="testvm.img" dev=dm-0 ino=4751773 scontext=root:system_r:initrc_t:s0 tcontext=system_u:object_r:svirt_image_t:s0:c242,c576 tclass=file host=... type=SYSCALL msg=audit(1320237390.206:506): arch=c000003e syscall=132 success=no exit=-13 a0=1cf42840 a1=7fffac450580 a2=0 a3=ea items=0 ppid=672 pid=675 auid=0 uid=0 gid=0 euid=64 suid=0 fsuid=64 egid=64 sgid=0 fsgid=64 tty=(none) ses=5 comm="condor_vm-gahp" exe="/usr/sbin/condor_vm-gahp" subj=root:system_r:initrc_t:s0 key=(null) The job is successfully executed despite the error. Job file: --------------- Universe=vm Executable=testvm Log=$(cluster).vm.log VM_TYPE=kvm VM_MEMORY=768 VM_DISK=/var/lib/libvirt/images/testvm.img:vda:w Queue --------------- # ls -Z /var/lib/libvirt/images/testvm.img -rwxr-xr-x root root system_u:object_r:svirt_image_t:s0:c242,c576 /var/lib/libvirt/images/testvm.img ("restorecon -vF /var/lib/libvirt/images/testvm.img" was also executed but it did not change anything). The error can be seen on RHEL5.x (5.7) only, not on RHEL 6.2. Version-Release number of selected component (if applicable): condor-7.6.5-0.4 condor-classads-7.6.5-0.4 condor-vm-gahp-7.6.5-0.4
So the only place we touch the image is when we set the access time (utime) if the image is writable. Arguably the gahp should not be doing this at all b/c it should be a responsibility of the hypervisor. As a result I've eliminated the utime updates to the vm_disk
Technical note added. If any revisions are required, please edit the "Technical Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: C: Running VM Universe jobs on RHEL5. C: The VM-Gahp attempts to update the utime for the image without the correct permissions. F: Remove logic inside of the VM-Gahp to update utime for the image because that is a responsibility of the hypervisor. R: The condor_vm-gahp should no longer trigger a SELinux error.
Fix verified on RHEL5.9, x86_64. condor-7.8.8-0.4.1.el5 condor-classads-7.8.8-0.4.1.el5 condor-vm-gahp-7.8.8-0.4.1.el5
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHSA-2013-0564.html