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From mlsorensen <...@git.apache.org>
Subject [GitHub] cloudstack pull request: CLOUDSTACK-6181: Allow RBD volumes to be ...
Date Fri, 22 May 2015 15:33:06 GMT
Github user mlsorensen commented on the pull request:

    https://github.com/apache/cloudstack/pull/281#issuecomment-104692430
  
    It was fixed for QCOW2 and LVM, back in January or February (unless something has changed
since then). It may be fine for RBD, I just wanted to bring it up as a caution. My impression
was that there might be an issue with the java bindings, either a bug or a missing call. If
I remember correctly, there are two things, there's libvirt managing volumes, and libvirt
managing block devices attached to VMs, and they are not the same thing. Resizing a libvirt
volume didn't necessarily notify any VM process using that volume of the change, nor resize
the block device attached to the live VM. 'virsh blockresize' does this correctly at both
the libvirt volume and VM block, though, so we just went back to the script rather than trying
to figure out how to patch the java libvirt bindings.
    
    Just make sure the existing behavior is not changed and test that you can stop/start and
read/write the root disk fine post a resize.


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