Re: [libvirt-users] virsh snapshot-create-as: change umask on snapshots

On 3/20/19 1:50 PM, Mircea Husz wrote: > I scripted the creation of snapshots and it works fine. Now I'd like to run the script as non-root. > > virsh snapshot-create-as --domain hq-live-v01 \ >      --name snappy \ >      --diskspec vda,file=/var/lib/libvirt/images/hq-live-v01.snappy,snapshot=external \ >      --diskspec vdb,file=/var/lib/libvirt/images/hq-live-storage.snappy,snapshot=external \ >      --disk-only --quiesce --atomic > > This fragment creates the snapshots, but get created with mode 0600: > -rw-------  1 qemu qemu     393216 Mar 19 17:08 hq-live-storage.snappy > -rw-------  1 qemu qemu    1048576 Mar 19 17:08 hq-live-v01.snappy > > The user account is in the libvirt group and has permissions to do everything except delete the files created by the snapshot, all I need is to get the snapshots created with 0660 mode. > > This is on a Centos 7.6 installation.  What knobs do I need to turn to control the umask? I'm not sure if you can force libvirt to create the files with a different mask, but perhaps a workaround would be to pre-create the files yourself with desired permissions, then tell virsh to --reuse-external (so that libvirt no longer has to try and create the files, and thus doesn't mess with permissions).