[Bug 1793137] Re: [SRU] Fix for KeyError: 'storage.zfs_pool_name' only partially successful -- needs changes

Chris MacNaughton 1793137 at bugs.launchpad.net
Fri Jan 8 15:47:35 UTC 2021


** Changed in: nova-lxd (Ubuntu)
       Status: Triaged => Won't Fix

** Changed in: nova-lxd (Ubuntu Cosmic)
       Status: Triaged => Won't Fix

** Changed in: nova-lxd (Ubuntu Bionic)
       Status: Triaged => Won't Fix

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https://bugs.launchpad.net/bugs/1793137

Title:
  [SRU] Fix for KeyError: 'storage.zfs_pool_name' only partially
  successful -- needs changes

Status in OpenStack LXD Charm:
  Fix Released
Status in Ubuntu Cloud Archive:
  Won't Fix
Status in Ubuntu Cloud Archive queens series:
  Won't Fix
Status in Ubuntu Cloud Archive rocky series:
  Won't Fix
Status in nova-lxd:
  Won't Fix
Status in nova-lxd package in Ubuntu:
  Won't Fix
Status in nova-lxd source package in Bionic:
  Won't Fix
Status in nova-lxd source package in Cosmic:
  Won't Fix

Bug description:
  [Impact]

  The issue is that the fix was only partially successful, in that
  whilst it avoids the 'storage.zfs_pool_name', the other branch of code
  doesn't get the zfs pool name, but instead the lxd pool name; if they
  are different then it fails.

  The LXD charm used different names (it's now being patched to use the
  same name for the lxd pool and zfs pool), which broke nova-lxd on
  bionic.

  The code in question is in nova/virt/lxd/driver.py in
  get_available_resource(self, nodename) around line 1057:

              try:
                  pool_name = lxd_config['config']['storage.zfs_pool_name']
              except KeyError:
                  pool_name = CONF.lxd.pool
              local_disk_info = _get_zpool_info(pool_name)

  i.e. storage.zfs_pool_name vs CONF.lxd.pool

  When nova-lxd is properly refactored for storage pools, this issue
  should be resolved.

  
  [Test Case]

  
  [Regression Potential]

  
  [Discussion]

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