Revision c09c495c
| b/lib/client/gnt_cluster.py | ||
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| 1867 | 1867 |
return (True, rollback) |
| 1868 | 1868 |
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| 1869 | 1869 |
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def _VersionSpecificDowngrade(): |
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""" |
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Perform any additional downrade tasks that are version specific |
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and need to be done just after the configuration downgrade. This |
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function needs to be idempotent, so that it can be redone if the |
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downgrade procedure gets interrupted after changing the |
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configuration. |
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Note that this function has to be reset with every version bump. |
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@return: True upon success |
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""" |
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ToStdout("Performing version-specific downgrade tasks.")
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return True |
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| 1870 | 1887 |
def _SwitchVersionAndConfig(versionstring, downgrade): |
| 1871 | 1888 |
""" |
| 1872 | 1889 |
Switch to the new Ganeti version and change the configuration, |
| ... | ... | |
| 1886 | 1903 |
ToStdout("Downgrading configuration")
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| 1887 | 1904 |
if not _RunCommandAndReport([pathutils.CFGUPGRADE, "--downgrade", "-f"]): |
| 1888 | 1905 |
return (False, rollback) |
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# Note: version specific downgrades need to be done before switching |
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# binaries, so that we still have the knowledgeable binary if the downgrade |
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# process gets interrupted at this point. |
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if not _VersionSpecificDowngrade(): |
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return (False, rollback) |
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| 1889 | 1911 |
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| 1890 | 1912 |
# Configuration change is the point of no return. From then onwards, it is |
| 1891 | 1913 |
# safer to push through the up/dowgrade than to try to roll it back. |
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