RE: [Xen-API] [PATCH]Make error msg more readable when sr-create returns sr_backend_failure

[Dave Scott <Dave.Scott@xxxxxxxxxxxxx>]

Hi,

> Make error msg more readable when sr-create returns
> sr_backend_failure.I think it is a bug here.

The current system is very ugly but it's working as intended here. The idea is 
that each error has a distinct code (the first string) e.g.
  SR_BACKEND_FAILURE_xx
And then for i18n we can have a simple table mapping
  Unique code -> message with {1} numbered {2} holes for arguments.

> before:
> # xe sr-create name-label=test type=iso device-
> config:location=/var/opt/xen/iso_import/test device-
> config:legacy_mode=true content-type=iso Error code:
> SR_BACKEND_FAILURE_226 Error parameters: , Invalid local path,

This definitely looks ugly. I'd like to fix it in the CLI by catching all 
exceptions SR_BACKEND_FAILURE_* and writing a more intelligent pretty-printer.

Cheers,
Dave

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