Bug 735745 - RFE: virt-manager pool creation should provide a permission setting option
Summary: RFE: virt-manager pool creation should provide a permission setting option
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: virt-manager
Version: 6.2
Hardware: x86_64
OS: Linux
Target Milestone: rc
: ---
Assignee: Cole Robinson
QA Contact: Virtualization Bugs
Depends On:
TreeView+ depends on / blocked
Reported: 2011-09-05 09:28 UTC by min zhan
Modified: 2011-11-14 03:23 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Enhancement
Doc Text:
Clone Of:
Last Closed: 2011-11-11 22:35:27 UTC

Attachments (Terms of Use)

Description min zhan 2011-09-05 09:28:41 UTC
Description of problem:
Now in virt-manager, create a dir pool, default permission is 700. This sometimes will make guest start failed with 'Permission denied' when guest use a manually copied another health guest image to this dir pool.

Version-Release number of selected component (if applicable):
# uname -r

How reproducible:

Steps to Reproduce:
1. Use virt-manager to create a dir pool called test. The Target path is /var/lib/libvirt/images/test.

# virsh pool-list --all
Name                 State      Autostart 
default              active     yes           
test                 active     yes  

# ll -lhs /var/lib/libvirt/images/
total 9.0G
2.2G -rw-------. 1 root root 8.0G Sep  4 03:33 cdrom.img
4.0K drwx------. 2 root root 4.0K Sep  4 04:16 test

# virsh pool-dumpxml test
<pool type='dir'>

2. # cp /var/lib/libvirt/images/cdrom.img /var/lib/libvirt/images/test/

# ll -lhs /var/lib/libvirt/images/test/cdrom.img 
2.2G -rw-------. 1 root root 8.0G Aug 30 06:52 /var/lib/libvirt/images/test/cdrom.img

# virsh dumpxml guest
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw' cache='none'/>
      <source file='/var/lib/libvirt/images/test/cdrom.img'/>
      <target dev='vda' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>

# virsh start guest
error: Failed to start domain rhel6test
error: internal error Process exited while reading console log output: char device redirected to /dev/pts/12
qemu-kvm: -drive file=/var/lib/libvirt/images/test/cdrom.img,if=none,id=drive-virtio-disk0,format=raw,cache=none: could not open disk image /var/lib/libvirt/images/test/cdrom.img: Permission denied

Actual results:
As above

Expected results:
virt-manager should support permission setting for creating a pool.

Additional info:
If the dir pool permission is 755, guest can be started successfully with same above case.

Comment 1 Cole Robinson 2011-09-22 15:51:42 UTC
I think this RFE can safely be deferred to 6.3. However it might be a good idea to file a bug with libvirt to have it change it's default storage pool perms to be 711 so a default pool can be used for qemu guests.

Comment 4 Dave Allan 2011-11-11 22:35:27 UTC
If you're using pools, and you manually copy a volume into it, you're expected to set the permissions properly.  IMO this is not a bug.

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