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---
upgrade:
- |
In certain environments (Kubernetes for example) indirect calls to the LVM
commands result in file descriptor leak warning messages which in turn cause
the process_execution method to raise and exception.
To accommodate these environments, and to maintain backward compatibility
in Newton we add a ``lvm_suppress_fd_warnings`` bool config to the LVM driver.
Setting this to True will append the LVM env vars to include the variable
``LVM_SUPPRESS_FD_WARNINGS=1``.
This is made an optional configuration because it only applies to very specific
environments. If we were to make this global that would require a rootwrap/privsep
update that could break compatibility when trying to do rolling upgrades of the
volume service.
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