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Created page with "It Finally happened. I have this bad habit of updating all of my virtual Ubuntu servers at once which in turn puts a lot of load on the hosts. Tonight was the first time that..."
 
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It Finally happened. I have this bad habit of updating all of my virtual Ubuntu servers at once which in turn puts a lot of load on the hosts. Tonight was the first time that I lost the main solid state cache drive on the host which in turn took the main servers that host this site along with my others. Luckily I have shared storage (which is backed up) on my NAS4Free box. The big dilemma was manually migrating the config files on the other host to activate the Virtual Servers. With a bit of googling I ran across a very helpful command which I tweaked a bit for my younger version of Proxmox. The commands below will bring your virtual machines back to life.
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--                          Module:Hatnote list                              --
--                                                                            --
-- This module produces and formats lists for use in hatnotes. In particular, --
-- it implements the for-see list, i.e. lists of "For X, see Y" statements,  --
-- as used in {{about}}, {{redirect}}, and their variants. Also introduced    --
-- are andList & orList helpers for formatting lists with those conjunctions. --
--------------------------------------------------------------------------------


*First you will need to be absolutely sure that the dead node is indeed dead. Otherwise you are going to complicate life in a terrible way.
local mArguments --initialize lazily
*Second, you will want to set the expected votes in quorum to 1 to make the live host realize that its the only one that matters anymore.
local mHatnote = require('Module:Hatnote')
  pvecm e 1
local libraryUtil = require('libraryUtil')
*Next you will issue a series of commands being mindful that you will need '''edit to coincide with your host names and the VM ID's''' of the virtual machines you which to manually migrate.
local checkType = libraryUtil.checkType
*For Example
local p = {}
mv etc/pve/nodes/'''yourdeadhostname'''/qemu-server/'''deadvmID.conf''' /etc/pve/nodes/'''yourlivehostname'''/qemu-server/
*If you are watching your live node at this point, you will see your virtual machines automagically appear on the live host.
*You can now fire your VM's up while you prepare to rebuild your failed host.


Original info found [http://pve.proxmox.com/pipermail/pve-user/2013-May/005616.html HERE]
--------------------------------------------------------------------------------
-- List stringification helper functions
--
-- These functions are used for stringifying lists, usually page lists inside
-- the "Y" portion of "For X, see Y" for-see items.
--------------------------------------------------------------------------------


[[Category:Proxmox]]
--default options table used across the list stringification functions
local stringifyListDefaultOptions = {
conjunction = "and",
separator = ",",
altSeparator = ";",
space = " ",
formatted = false
}
 
-- Stringifies a list generically; probably shouldn't be used directly
function stringifyList(list, options)
-- Type-checks, defaults, and a shortcut
checkType("stringifyList", 1, list, "table")
if #list == 0 then return nil end
checkType("stringifyList", 2, options, "table", true)
options = options or {}
for k, v in pairs(stringifyListDefaultOptions) do
if options[k] == nil then options[k] = v end
end
local s = options.space
-- Format the list if requested
if options.formatted then list = mHatnote.formatPages(unpack(list)) end
-- Set the separator; if any item contains it, use the alternate separator
local separator = options.separator
--searches display text only
function searchDisp(t, f)
return string.find(string.sub(t, (string.find(t, '|') or 0) + 1), f)
end
for k, v in pairs(list) do
if searchDisp(v, separator) then
separator = options.altSeparator
break
end
end
-- Set the conjunction, apply Oxford comma, and force a comma if #1 has "§"
local conjunction = s .. options.conjunction .. s
if #list == 2 and searchDisp(list[1], "§") or #list > 2 then
conjunction = separator .. conjunction
end
-- Return the formatted string
return mw.text.listToText(list, separator .. s, conjunction)
end
 
--DRY function
function conjList (conj, list, fmt)
return stringifyList(list, {conjunction = conj, formatted = fmt})
end
 
-- Stringifies lists with "and" or "or"
function p.andList (...) return conjList("and", ...) end
function p.orList (...) return conjList("or", ...) end
 
--------------------------------------------------------------------------------
-- For see
--
-- Makes a "For X, see [[Y]]." list from raw parameters. Intended for the
-- {{about}} and {{redirect}} templates and their variants.
--------------------------------------------------------------------------------
 
--default options table used across the forSee family of functions
local forSeeDefaultOptions = {
andKeyword = 'and',
title = mw.title.getCurrentTitle().text,
otherText = 'other uses',
forSeeForm = 'For %s, see %s.'
}
 
--Collapses duplicate punctuation
function punctuationCollapse (text)
local replacements = {
["%.%.$"] = ".",
["%?%.$"] = "?",
["%!%.$"] = "!",
["%.%]%]%.$"] = ".]]",
["%?%]%]%.$"] = "?]]",
["%!%]%]%.$"] = "!]]"
}
for k, v in pairs(replacements) do text = string.gsub(text, k, v) end
return text
end
 
-- Structures arguments into a table for stringification, & options
function p.forSeeArgsToTable (args, from, options)
-- Type-checks and defaults
checkType("forSeeArgsToTable", 1, args, 'table')
checkType("forSeeArgsToTable", 2, from, 'number', true)
from = from or 1
checkType("forSeeArgsToTable", 3, options, 'table', true)
options = options or {}
for k, v in pairs(forSeeDefaultOptions) do
if options[k] == nil then options[k] = v end
end
-- maxArg's gotten manually because getArgs() and table.maxn aren't friends
local maxArg = 0
for k, v in pairs(args) do
if type(k) == 'number' and k > maxArg then maxArg = k end
end
-- Structure the data out from the parameter list:
-- * forTable is the wrapper table, with forRow rows
-- * Rows are tables of a "use" string & a "pages" table of pagename strings
-- * Blanks are left empty for defaulting elsewhere, but can terminate list
local forTable = {}
local i = from
local terminated = false
-- Loop to generate rows
repeat
-- New empty row
local forRow = {}
-- On blank use, assume list's ended & break at end of this loop
forRow.use = args[i]
if not args[i] then terminated = true end
-- New empty list of pages
forRow.pages = {}
-- Insert first pages item if present
table.insert(forRow.pages, args[i + 1])
-- If the param after next is "and", do inner loop to collect params
-- until the "and"'s stop. Blanks are ignored: "1|and||and|3" → {1, 3}
while args[i + 2] == options.andKeyword do
if args[i + 3] then
table.insert(forRow.pages, args[i + 3])
end
-- Increment to next "and"
i = i + 2
end
-- Increment to next use
i = i + 2
-- Append the row
table.insert(forTable, forRow)
until terminated or i > maxArg
return forTable
end
 
-- Stringifies a table as formatted by forSeeArgsToTable
function p.forSeeTableToString (forSeeTable, options)
-- Type-checks and defaults
checkType("forSeeTableToString", 1, forSeeTable, "table")
checkType("forSeeTableToString", 2, options, "table", true)
options = options or {}
for k, v in pairs(forSeeDefaultOptions) do
if options[k] == nil then options[k] = v end
end
-- Stringify each for-see item into a list
local strList = {}
for k, v in pairs(forSeeTable) do
local useStr = v.use or options.otherText
local pagesStr = p.andList(v.pages, true) or
mHatnote._formatLink(mHatnote.disambiguate(options.title))
local forSeeStr = string.format(options.forSeeForm, useStr, pagesStr)
forSeeStr = punctuationCollapse(forSeeStr)
table.insert(strList, forSeeStr)
end
-- Return the concatenated list
return table.concat(strList, ' ')
end
 
-- Produces a "For X, see [[Y]]" string from arguments. Expects index gaps
-- but not blank/whitespace values. Ignores named args and args < "from".
function p._forSee (args, from, options)
local forSeeTable = p.forSeeArgsToTable(args, from, options)
return p.forSeeTableToString(forSeeTable, options)
end
 
-- As _forSee, but uses the frame.
function p.forSee (frame, from, options)
mArguments = require('Module:Arguments')
return p._forSee(mArguments.getArgs(frame), from, options)
end
 
return p
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