This is a script I wrote to delete snapshots over a certian age wth an override. The override is in the name of the snapshot, so the snapshot can be deleted after x days or after a date.<\/p>\n\n\n\n
If the snapshot is named “my snapshot _ DeleteAfter60days” the script will look for “DeleteAfter” or “DA” after the last “_”. If it finds it it will remove that string (and “days”) if the resulting string is numeric and less then 6 didgits it will assume the number is days to keep. If on the other hand the number is 6 or more didgits it will assume its a date.<\/p>\n\n\n\n
This is best expianed by example.<\/p>\n\n\n\n
Snapshot name Action<\/p>\n\n\n\n
So here is the script. I have left the -whatif attribute on the delete snapshot commands so running this script should not do any harm.<\/p>\n\n\n
\n# Semi smart snapshot deleter script\n# Jason Street\n# 10\/2020\n#\n# script will delete any snapshot over $DeleteAfterDays old. \n# unles the end of the snap name is _DAx or _DeleteAfter x (x = date, in format ddmmyyyy or dd\/mm\/yyyy) or \n# or _DAn (n = number of days sinse creation)\n# or _$IgnoreString (will be ignored by the sctipt)\n\n$vCenter = "vcenter001.jase.local"\n$DeleteAfterDays = 60\n$IgnoreString = "DoNotDelete"\n$LogFile = ".\\SnapDel.log"\n$DebugFile = ".\\SnapDel_debug.log"\n\n\n### start of functions\n\nfunction Send-DebugLog \n{\n [CmdletBinding()]\n param\n ( \n [Parameter(Mandatory = $false,ValueFromPipeline=$true)] $Message,\n [Parameter(Mandatory = $false)] $Result, # result of last command ($?)\n [Parameter(Mandatory = $false)] [string]$LogFilePath = $null, # log file location\n [Parameter(Mandatory = $false)] [string]$DebugFilePath = $null, # debug file location\n [Parameter(Mandatory = $false)] [switch]$ScreenPrint = $false, # print message to the screen\n [Parameter(Mandatory = $false)] [switch]$LogIt = $false, # send message to log file if set\n [Parameter(Mandatory = $false)] [switch]$ClearLog = $false, # clears the log file\n [Parameter(Mandatory = $false)] [switch]$ClearDebug = $false # clears the debug log file\n )\n\n #if ($DebugFilePath -eq $null){$DebugFilePath = $DebugFile}\n #if ($LogFilePath -eq $null){$LogFilePath = $LogFile}\n\n if ($ClearLog -eq $true){"Script run at " + ((get-date).toString()) | Out-File $LogFile}\n if ($ClearDebug -eq $true){"Script run at " + ((get-date).toString()) | Out-File $DebugFile}\n\n if ($Message -ne $Null)\n {\n if ($Result -eq '' -or $Result -eq $null){$OutMessage = $Message}\n if ($Result -eq $true){$OutMessage = "OK " + $Message}\n if ($Result -eq $false){$OutMessage = "Fail " + $Message}\n\n $OutMessage | out-file $DebugFile -Append\n if ($LogIt -eq $true){$OutMessage | out-file $LogFile -Append}\n if ($ScreenPrint -eq $true)\n {\n if ($Result -eq $Null){write-host $OutMessage -ForegroundColor Gray}\n if ($Result -eq $true){write-host $OutMessage -ForegroundColor Green}\n if ($Result -eq $false){write-host $OutMessage -ForegroundColor red}\n }\n }\n}\n\nfunction isNumeric ($x) {\n try {\n 0 + $x | Out-Null\n return $true\n } catch {\n return $false\n }\n}\n\n<#\n .SYNOPSIS\n To look for a date string in a text string\n\n .DESCRIPTION\n will look for the following at the end of a text string _DAddmmyy, _DeleteAfterxDays, _DA dmyy\n and return the a data object (if a date is found\n or a int of the number of days\n or a $null if not found\n\n .PARAMETER NameString\n The test string to be searched\n\n .PARAMETER Dilimitor \n the Dilimitor between the user test and the date text\n#>\nfunction Get-DateFromName \n{\n [CmdletBinding()]\n param\n ( \n [Parameter(Mandatory = $true)] [string]$NameString,\n [Parameter(Mandatory = $false)] [string]$Dilimitor = "_",\n [Parameter(Mandatory = $false)] [string]$IgnoreString = $null\n )\n\n "Entering function Get-DatefromName" | Send-DebugLog\n " with $NameString" | Send-DebugLog \n\n # get last "word" and remove spaces\n $LWord = ($NameString.split($Dilimitor))[($NameString.split($Dilimitor)).count - 1]\n $LWord = $LWord -replace ' ','' \n\n # check the last word has the keep override in\n if ($IgnoreString -ne $null)\n {\n if ($LWord -eq $IgnoreString)\n {\n return "Ignore"\n }\n }\n\n # check the last word has the delete override in\n if (($LWord -like "da*") -or ($Lword -like "deleteafter*"))\n {\n\n # remove the known text as it is not needed.\n $LWord = $LWord -replace "deleteafter","da"\n $LWord = $LWord -replace "days",''\n $LWord = $LWord -replace "da",''\n $LWord = $LWord -replace "%2f","."\n $LWord = $LWord -replace "%5c","."\n $LWord = $LWord -replace "%252f","."\n $LWord = $LWord -replace " ",''\n " LWord = $LWord" | Send-DebugLog\n\n\n\n # test if all we have in numbers left\n if (isNumeric $LWord)\n {\n # is most likely a day counter but could be a date with no delims\n if ($LWord.length -lt 6)\n {\n # number less then 6 didgits, assuming its just a day\n #"Assuming is a day"\n " returning int = $LWord"| Send-DebugLog\n return [int32]$LWord\n }else{\n # nummer 6 more more didgits, assuming its a date with the format DDMMYY\n if ($LWord.length -eq 6)\n {\n # assuming date is in format YYMMDD\n " returning date = " + (get-date -Year $LWord.Substring(4,2) -Month $LWord.Substring(2,2) -day $Lword.Substring(0,2)) | Send-DebugLog\n return get-date -Year $LWord.Substring(4,2) -Month $LWord.Substring(2,2) -day $Lword.Substring(0,2)\n }else{\n if ($LWord.length -eq 8)\n {\n # assuming date is in format DDMMYYYY\n " returning date = " + (get-date -Year $LWord.Substring(8,4) -Month $LWord.Substring(4,2) -day $Lword.Substring(0,2)) | Send-DebugLog\n return get-date -Year $LWord.Substring(8,4) -Month $LWord.Substring(4,2) -day $Lword.Substring(0,2)\n }else{\n # No idea what the number is\n " returning null"| Send-DebugLog\n return $null\n }\n }\n }\n }else{\n # could be a date\n if (!(isNumeric $LWord.Substring(2,1)) )\n {\n # 3rd charrictor is not a number, could be a delimitor\n # remove all occerances of the 3rd charrictor and see if we get a number.\n if (isNumeric $LWord.replace($LWord.Substring(2,1),''))\n {\n # date most likely to be DDxMMxYYYY\n $DateBits = $LWord.split($LWord.Substring(2,1))\n\n # check the yaer is 2 digits, if so add 2000 to it\n if ($DateBits[2].tostring().Length -eq 2){$DateBits[2] = [int]$DateBits[2] + 2000}\n " returning date = " + (get-date -Year $DateBits[2] -Month $DateBits[1] -day $DateBits[0]) | Send-DebugLog\n return get-date -Year $DateBits[2] -Month $DateBits[1] -day $DateBits[0]\n }else{\n # date is not a number with out the dilims removed. unable to process.\n " returning null"| Send-DebugLog\n return $null\n }\n }else{\n \n if (!(isNumeric $LWord.Substring(1,1)) )\n {\n # 2nd charrictor is not a number, could be a delimitor\n # check $LWord is a number after removing the 2nd charrictor (in all locations as there will be 2 dilims)\n if (isNumeric $LWord.replace($LWord.Substring(1,1),''))\n {\n # date is most likely in the format DxMMxYYYY\n $DateBits = $LWord.split($LWord.Substring(1,1))\n # check if the yaer is 2 digits, if so add 2000 to it\n if ($DateBits[2].tostring().Length -eq 2){$DateBits[2] = [int]$DateBits[2] + 2000}\n " returning date = " + (get-date -Year $DateBits[2] -Month $DateBits[1] -Day $DateBits[0]) | Send-DebugLog\n return get-date -Year $DateBits[2] -Month $DateBits[1] -Day $DateBits[0]\n }else{\n # date is not a number with out the dilims removed. unable to process.\n " returning null"| Send-DebugLog\n return $null\n }\n }else{\n " returning null"| Send-DebugLog\n return $null\n }\n }\n }\n }else{\n # Override keywords not found\n " returning null, override keywords not found"| Send-DebugLog\n return $null\n }\n}\n\n### end of functions\n\n\n\nSend-DebugLog -LogIt -ClearLog -ClearDebug\n\nconnect-viserver vCenter001.jase.local\n\n$Snaps = get-vm | get-snapshot \n\nforeach ($Snap in $Snaps)\n{\n # Loop throug each snapshot\n # read the snapshot name and work out if there is delete override\n $DelInfo = Get-DateFromName ($Snap.name) "_" -IgnoreString $IgnoreString\n if ($DelInfo)\n {\n # function returned a date\n if ($DelInfo.gettype().name -eq "DateTime")\n {\n # snap has a delete after date\n if ($DelInfo -lt (get-date))\n {\n # snap has a delete date is is now old enougth to be deleted\n ("VM " + $Snap.vm + " with snapshot " + $Snap.name + " will be deleted !! " + $DelInfo.tostring() + " in " + [int](($DelInfo - (get-date)).TotalDays) + " days") | Send-DebugLog -LogIt -ScreenPrint\n Remove-Snapshot $Snap -WhatIf\n "Deleting Snapshot on VM " + $Snap.vm + " called " + $Snap.name | Send-DebugLog -Result $? -LogIt -ScreenPrint\n }else{\n # snap has a delete date is is not old enougth yet to be deleteded\n ("VM " + $Snap.vm + " with snapshot " + $Snap.name + " will be deleted after " + $DelInfo.tostring() + " in " + [int](($DelInfo - (get-date)).TotalDays) + " days") | Send-DebugLog -LogIt -ScreenPrint \n }\n }\n\n # function returned a number \n if ($DelInfo.gettype().name -eq "Int32")\n {\n # snap has a number of days to keep\n if ($Snap.created.adddays($DelInfo) -lt (get-date))\n {\n # snap has reached its expirary in days and will be deleted.\n ("VM " + $Snap.vm + " with snapshot " + $Snap.name + " will be deleted as its " + $DelInfo.tostring() + " days old " ) | Send-DebugLog -LogIt -ScreenPrint\n Remove-Snapshot $Snap -WhatIf\n "Deleting Snapshot on VM " + $Snap.vm + " called " + $Snap.name | Send-DebugLog -Result $? -LogIt -ScreenPrint\n }else{\n # snap has not reached it "expirary" het so will not be deleted (yet).\n ("VM " + $Snap.vm + " with snapshot " + $Snap.name + " will be deleted in " + [int](($Snap.created.adddays($DelInfo) - (get-date)).totaldays) + " days " ) | Send-DebugLog -LogIt -ScreenPrint\n }\n }\n \n # function returned the string "ignore" \n if ($DelInfo -eq "ignore")\n {\n # the function fond the ignor sting. This script will not delete this snapshot.\n ("VM " + $Snap.vm + " with snapshot " + $Snap.name + " has been set to ignore ") | Send-DebugLog -LogIt -ScreenPrint\n }\n\n \n }else{\n # function returned a null\n if ($Snap.created.adddays($DeleteAfterDays) -lt (get-date))\n {\n ("VM " + $Snap.vm + " with snapshot " + $Snap.name + " unknown, but its older then $DeleteAfterDays days") | Send-DebugLog -LogIt -ScreenPrint\n Remove-Snapshot $Snap -WhatIf\n "Deleting Snapshot on VM " + $Snap.vm + " called " + $Snap.name | Send-DebugLog -Result $? -LogIt -ScreenPrint\n }else{\n ("VM " + $Snap.vm + " with snapshot " + $Snap.name + " unknown, but its not going to get deleted for " + [int](($Snap.created.adddays($DeleteAfterDays) - (get-date)).TotalDays) + " days") | Send-DebugLog -LogIt -ScreenPrint\n }\n }\n}\n\n\n\n<\/pre><\/div>\n\n\nOne thing to note is that the log will be over-written every time the script runs. So currently there will no perminant log of what snapshots where deleted. <\/p>\n","protected":false},"excerpt":{"rendered":"
This is a script I wrote to delete snapshots over a certian age wth an override. The override is in the name of the snapshot, so the snapshot can be deleted after x days or after a date. If the snapshot is named “my snapshot _ DeleteAfter60days” the script will look for “DeleteAfter” or “DA”…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[5,43],"tags":[17,12,28],"class_list":["post-515","post","type-post","status-publish","format-standard","hentry","category-powercli","category-vmware","tag-function","tag-powercli","tag-snapshots"],"_links":{"self":[{"href":"https:\/\/www.jasonstreet.com\/index.php?rest_route=\/wp\/v2\/posts\/515","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jasonstreet.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jasonstreet.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jasonstreet.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jasonstreet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=515"}],"version-history":[{"count":6,"href":"https:\/\/www.jasonstreet.com\/index.php?rest_route=\/wp\/v2\/posts\/515\/revisions"}],"predecessor-version":[{"id":693,"href":"https:\/\/www.jasonstreet.com\/index.php?rest_route=\/wp\/v2\/posts\/515\/revisions\/693"}],"wp:attachment":[{"href":"https:\/\/www.jasonstreet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jasonstreet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jasonstreet.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}