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Add logging for Revert and Snapshot.

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This commit is contained in:
SimonFair
2024-05-17 19:04:46 +01:00
parent 7f77338b3d
commit d6eb51f502
1 changed files with 33 additions and 2 deletions
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35
emhttp/plugins/dynamix.vm.manager/include/libvirt_helpers.php
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@@ -1900,7 +1900,7 @@ private static $encoding = 'UTF-8';
function vm_snapshot($vm,$snapshotname, $snapshotdescinput, $free = "yes", $method = "QEMU", $memorysnap = "yes") {
global $lv ;
$logging = true;
#Get State
$res = $lv->get_domain_by_name($vm);
$dom = $lv->domain_get_info($res);
@@ -1961,19 +1961,22 @@ private static $encoding = 'UTF-8';
if ($free == "yes" && $dirfree < $capacity) { $arrResponse = ['error' => _("Insufficent Storage for Snapshot")]; return $arrResponse ;}
#Copy nvram
if ($logging) qemu_log($vm,"Copy NVRAM");
if (!empty($lv->domain_get_ovmf($res))) $nvram = $lv->nvram_create_snapshot($lv->domain_get_uuid($vm),$name) ;
$xmlfile = $dirpath."/".$name.".running" ;
if ($logging) qemu_log($vm,"Save XML if state is running current $state");
if ($state == "running") exec("virsh dumpxml '$vm' > ".escapeshellarg($xmlfile),$outxml,$rtnxml) ;
$output= [] ;
if ($logging) qemu_log($vm,"snap method $method");
switch ($method) {
case "ZFS":
# Create ZFS Snapshot
if ($state == "running") exec($cmdstr." 2>&1",$output,$return);
$zfsdataset = trim(shell_exec("zfs list -H -o name -r $dirpath")) ;
$fssnapcmd = " zfs snapshot $zfsdataset@$name";
if ($logging) qemu_log($vm,"zfs snap: $fssnapcmd");
shell_exec($fssnapcmd);
# if running resume.
if ($state == "running") $lv->domain_resume($vm);
@@ -1983,13 +1986,16 @@ private static $encoding = 'UTF-8';
break;
default:
# No Action
if ($logging) qemu_log($vm,"Cmd: $cmdstr");
exec($cmdstr." 2>&1",$output,$return);
}
if (strpos(" ".$output[0],"error") ) {
$arrResponse = ['error' => substr($output[0],6) ] ;
if ($logging) qemu_log($vm,"Error");
} else {
$arrResponse = ['success' => true] ;
if ($logging) qemu_log($vm,"Success write snap db");
$ret = write_snapshots_database("$vm","$name",$state,$snapshotdescinput,$method) ;
#remove meta data
if ($ret != "noxml") $ret = $lv->domain_snapshot_delete($vm, "$name" ,2) ;
@@ -2000,6 +2006,7 @@ private static $encoding = 'UTF-8';
function vm_revert($vm, $snap="--current",$action="no",$actionmeta = 'yes',$dryrun = false) {
global $lv ;
$logging = true;
$snapslist= getvmsnapshots($vm) ;
#$disks =$lv->get_disk_stats($vm) ;
$snapstate = $snapslist[$snap]['state'];
@@ -2047,6 +2054,7 @@ private static $encoding = 'UTF-8';
if (!strpos($xml,'<vmtemplate xmlns="unraid"')) $xml=str_replace('<vmtemplate','<vmtemplate xmlns="unraid"',$xml);
if (!$dryrun) $new = $lv->domain_define($xml);
if ($new) $arrResponse = ['success' => true] ; else $arrResponse = ['error' => $lv->get_last_error()] ;
if ($logging) qemu_log($vm,"Create XML $new");
}
# remove snapshot meta data, images, memory, runxml and NVRAM. for all snapshots.
@@ -2056,6 +2064,7 @@ private static $encoding = 'UTF-8';
if ($diskname == "hda" || $diskname == "hdb") continue ;
$path = $disk["source"]["@attributes"]["file"] ;
if (is_file($path) && $action == "yes") if (!$dryrun) unlink("$path") ;else echo "unlink $path\n";
if ($logging) qemu_log($vm,"unlink $path");
$item = array_search($path,$snapslist[$snap]['backing']["r".$diskname]) ;
$item++ ;
while($item > 0)
@@ -2063,6 +2072,7 @@ private static $encoding = 'UTF-8';
if (!isset($snapslist[$snap]['backing']["r".$diskname][$item])) break ;
$newpath = $snapslist[$snap]['backing']["r".$diskname][$item] ;
if (is_file($newpath) && $action == "yes") if (!$dryrun) unlink("$newpath"); else echo "unlink $newpath\n";
if ($logging) qemu_log($vm,"unlink $newpath");
$item++ ;
}
}
@@ -2075,6 +2085,7 @@ private static $encoding = 'UTF-8';
$name = $s['name'] ;
$oldmethod = $s['method'];
if ($dryrun) echo "$name $oldmethod\n";
if ($logging) qemu_log($vm,"$name $oldmethod");
if (!isset($primarypath)) $primarypath = $s['primarypath'];
$xmlfile = $primarypath."/$name.running" ;
$memoryfile = $primarypath."/memory$name.mem" ;
@@ -2086,6 +2097,7 @@ private static $encoding = 'UTF-8';
if ($olddiskname == "hda" || $olddiskname == "hdb") continue ;
$oldpath = $olddisk["source"]["@attributes"]["file"] ;
if (is_file($oldpath) && $action == "yes") if (!$dryrun) unlink("$oldpath"); else echo "$oldpath\n";
if ($logging) qemu_log($vm,"unlink $oldpath");
}
}
if ($oldmethod == "ZFS") {
@@ -2093,6 +2105,7 @@ private static $encoding = 'UTF-8';
$zfsdataset = trim(shell_exec("zfs list -H -o name -r ".transpose_user_path($primarypath))) ;
$fssnapcmd = " zfs destroy $zfsdataset@$name";
if (!$dryrun) shell_exec($fssnapcmd); else echo "old $fssnapcmd\n";
if ($logging) qemu_log($vm,"old $fssnapcmd");
}
#Delete Metadata
@@ -2100,10 +2113,12 @@ private static $encoding = 'UTF-8';
if (is_file($memoryfile) && $action == "yes") if (!$dryrun) unlink($memoryfile); else echo ("$memoryfile \n") ;
if (is_file($xmlfile) && $action == "yes") if (!$dryrun) unlink($xmlfile); else echo ("$xmlfile \n") ;
if ($logging) qemu_log($vm,"mem $memoryfile xml $xmlfile");
# Delete NVRAM
if (!empty($lv->domain_get_ovmf($res)) && $action == "yes") if (!$dryrun) if (!empty($lv->domain_get_ovmf($res))) $nvram = $lv->nvram_revert_snapshot($lv->domain_get_uuid($vm),$name) ; else echo "Remove old NV\n";
if ($actionmeta == "yes") {
if (!$dryrun) $ret = delete_snapshots_database("$vm","$name"); else echo "Old Delete snapshot meta\n";
if ($logging) qemu_log($vm,"Old Delete snapshot meta");
}
}
@@ -2116,8 +2131,10 @@ private static $encoding = 'UTF-8';
}
$fssnapcmd = " zfs rollback $zfsdataset@$snap";
if (!$dryrun) shell_exec($fssnapcmd); else echo "$fssnapcmd\n";
if ($logging) qemu_log($vm,"$fssnapcmd");
$fssnapcmd = " zfs destroy $zfsdataset@$snap";
if (!$dryrun) shell_exec($fssnapcmd); else echo "$fssnapcmd\n";
if ($logging) qemu_log($vm,"$fssnapcmd");
}
if ($snapslist[$snap]['state'] == "running" || $snapslist[$snap]['state'] == "disk-snapshot") {
@@ -2129,13 +2146,17 @@ private static $encoding = 'UTF-8';
$xml = custom::createXML('domain',$xmlobj)->saveXML();
if (!strpos($xml,'<vmtemplate xmlns="unraid"')) $xml=str_replace('<vmtemplate','<vmtemplate xmlns="unraid"',$xml);
if (!$dryrun) $rtn = $lv->domain_define($xml) ;
if ($logging) qemu_log($vm,"Define XML");
# Restore Memory.
if ($snapslist[$snap]['state'] == "running") {
if (!$dryrun) $cmdrtn = exec("virsh restore --running ".escapeshellarg($memoryfile)) ;
if ($logging) qemu_log($vm,"Restore");
if (!$dryrun && !$cmdrtn) unlink($xmlfile);
if ($logging) qemu_log($vm,"Unlink XML");
if (!$dryrun && !$cmdrtn) unlink($memoryfile);
if ($logging) qemu_log($vm,"Unlink memoryfile");
}
if ($snapslist[$snap]['state'] == "disk-snapshot") if (!$dryrun) unlink($xmlfile);
}
@@ -2148,12 +2169,14 @@ private static $encoding = 'UTF-8';
if ($actionmeta == "yes") {
if (!$dryrun) $ret = delete_snapshots_database("$vm","$snap"); else echo "Delete snapshot meta\n";
if ($logging) qemu_log($vm,"Delete Snapshot DB entry");
}
if (!$dryrun) if (!empty($lv->domain_get_ovmf($res))) $nvram = $lv->nvram_revert_snapshot($lv->domain_get_uuid($vm),$snap) ; else echo "Delete NV $vm,$snap\n";
$arrResponse = ['success' => true] ;
if ($dryrun) var_dump($arrResponse);
if ($logging) qemu_log($vm, "Success");
return($arrResponse) ;
}
@@ -2634,4 +2657,12 @@ function get_vm_usage_stats($collectcpustats = true,$collectdiskstats = true,$co
}
}
function qemu_log($vm,$m) {
$m = print_r($m,true);
$m = date("YmdHis")." ".$m;
$m = str_replace("\n", " ", $m);
$m = str_replace('"', "'", $m);
file_put_contents("/var/log/libvirt/qemu/$vm.log",$m."\n",FILE_APPEND);
}
?>