On 08/20/2013 01:54 AM, Guannan Ren wrote: > When backing files of a disk file are stored in NFS shared folder, > qemu process requires at least the read permission. > But in some rare situation, these backing files can not even be read > If so, we should treat the diskchains as broken. > This patch add a checking for this, report negative in such case. We have been historically bitten by changes to this code. I think we need to patch tests/virstoragetest.c (and/or add a new test) before accepting this change, to make sure that we are testing the behavior we want. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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