Re: [libvirt] virDomainAttachDevice error during disk hotplug

On Sat, Aug 10, 2013 at 05:38:20PM +0530, Deepak C Shetty wrote: > Hi All, > I am trying to do a hotplug of a disk from VDSM (which uses > libvirt to get things done). > I hit the below error "operation failed: open disk image file > failed" comign from virDomainAttachDevice. > > Some background: > > 1) The qemu-img create cmd I use (inside vdsm) to create the file > being hotplugged is > > /usr/bin/qemu-img create -f qcow2 -F qcow2 -b /rhev/data-center/000065de-04b8-42e2-986c-2de664708be7/11112d24-4cda-4200-8f6d-a1d8362c70fd/images/22224c45-6504-4ea1-bd24-12340017dd32/3333017d-1278-4bfb-8129-62bded257399 > /var/run/vdsm/3333017d-1278-4bfb-8129-62bded257399' (cwd > /var/run/vdsm) > > I even tried using the rel. backing path instead of abs. path as below.. > > /usr/bin/qemu-img create -f qcow2 -F qcow2 -b ../../../rhev/data-center/000065de-04b8-42e2-986c-2de664708be7/11112d24-4cda-4200-8f6d-a1d8362c70fd/images/22224c45-6504-4ea1-bd24-12340017dd32/3333017d-1278-4bfb-8129-62bded257399 > /var/run/vdsm/3333017d-1278-4bfb-8129-62bded257399' (cwd > /var/run/vdsm) > > but hit the same error during hotplug operation > > 2) qemu-img info /var/run/vdsm/3333017d-1278-4bfb-8129-62bded257399 > image: /var/run/vdsm/3333017d-1278-4bfb-8129-62bded257399 > file format: qcow2 > virtual size: 3.8G (4096000000 bytes) > disk size: 196K > cluster_size: 65536 > backing file: /rhev/data-center/000065de-04b8-42e2-986c-2de664708be7/11112d24-4cda-4200-8f6d-a1d8362c70fd/images/22224c45-6504-4ea1-bd24-12340017dd32/3333017d-1278-4bfb-8129-62bded257399 > backing file format: qcow2 What does this show qemu-img info /rhev/data-center/000065de-04b8-42e2-986c-2de664708be7/11112d24-4cda-4200-8f6d-a1d8362c70fd/images/22224c45-6504-4ea1-bd24-12340017dd32/3333017d-1278-4bfb-8129-62bded257399 ?

Daniel