giving up on packaging for ubuntu

[nodemanager.git] / sliver_lxc.py

diff --git a/sliver_lxc.py b/sliver_lxc.py
index 3705598..c3b098e 100644 (file)
--- a/sliver_lxc.py
+++ b/sliver_lxc.py
@@ -10,6 +10,13 @@ import grp
 from pwd import getpwnam
 from string import Template
 
+# vsys probably should not be a plugin
+# the thing is, the right way to handle stuff would be that
+# if slivers get created by doing a,b,c
+# then they sohuld be delted by doing c,b,a
+# the current ordering model for vsys plugins completely fails to capture that
+from plugins.vsys import removeSliverFromVsys, startService as vsysStartService
+
 import libvirt
 
 import logger
@@ -83,7 +90,7 @@ class Sliver_LXC(Sliver_Libvirt, Initscript):
 
         vref = rec['vref']
         if vref is None:
-            vref = "lxc-f14-x86_64"
+            vref = "lxc-f18-x86_64"
             logger.log("sliver_libvirt: %s: WARNING - no vref attached, using hard-wired default %s" % (name,vref))
 
         refImgDir    = os.path.join(Sliver_LXC.REF_IMG_BASE_DIR, vref)
@@ -263,7 +270,7 @@ unset pathmunge
             dom = conn.lookupByName(name)
         except:
             dom = conn.defineXML(xml)
-        logger.verbose('lxc_create: %s -> %s'%(name, Sliver_Libvirt.debuginfo(dom)))
+        logger.verbose('lxc_create: %s -> %s'%(name, Sliver_Libvirt.dom_details(dom)))
 
 
     @staticmethod
@@ -279,37 +286,58 @@ unset pathmunge
             # Destroy libvirt domain
             dom = conn.lookupByName(name)
         except:
-            logger.verbose('sliver_lxc: Domain %s does not exist!' % name)
+            logger.verbose('sliver_lxc.destroy: Domain %s does not exist!' % name)
+            return
+
+        # Slivers with vsys running will fail the subvolume delete
+        # removeSliverFromVsys return True if it stops vsys, telling us to start it again later
+        vsys_stopped = removeSliverFromVsys (name)
 
         try:
+            logger.log("sliver_lxc.destroy: destroying domain %s"%name)
             dom.destroy()
         except:
-            logger.verbose('sliver_lxc: Domain %s not running... continuing.' % name)
+            logger.verbose('sliver_lxc.destroy: Domain %s not running... continuing.' % name)
 
         try:
+            logger.log("sliver_lxc.destroy: undefining domain %s"%name)
             dom.undefine()
         except:
-            logger.verbose('sliver_lxc: Domain %s is not defined... continuing.' % name)
+            logger.verbose('sliver_lxc.destroy: Domain %s is not defined... continuing.' % name)
 
         # Remove user after destroy domain to force logout
         command = ['/usr/sbin/userdel', '-f', '-r', name]
         logger.log_call(command, timeout=15*60)
 
-        if os.path.exists(os.path.join(containerDir,"vsys")):
-            # Slivers with vsys running will fail the subvolume delete.
-            # A more permanent solution may be to ensure that the vsys module
-            # is called before the sliver is destroyed.
-            logger.log("destroying vsys directory and restarting vsys")
-            logger.log_call(["rm", "-fR", os.path.join(containerDir, "vsys")])
-            logger.log_call(["/etc/init.d/vsys", "restart", ])
-
+        # clean up rootfs as userdel will only take care of /home/<slicename>
+        command = ['rm','-rf', containerDir]
+        logger.log_call(command, timeout=60)
+        # at this point we sometimes see one subvolume left in /vservers/<slicename>/vrefname
+        command = ['btrfs', 'subvolume', 'delete', "%s/*"%containerDir ]
+        logger.log_call(command, timeout=10)
         # Remove rootfs of destroyed domain
         command = ['btrfs', 'subvolume', 'delete', containerDir]
-        logger.log_call(command, timeout=60)
-
-        if os.path.exists(containerDir):
-           # oh no, it's still here...
-           logger.log("WARNING: failed to destroy container %s" % containerDir)
-
-        logger.verbose('sliver_libvirt: %s destroyed.'%name)
+        logger.log_call(command, timeout=10)
 
+        if not os.path.exists(containerDir):
+            logger.log('sliver_lxc.destroy: %s cleanly destroyed.'%name)
+        else:
+            # oh no, it's still here...
+            # this is more of a way to try and understand what is going on here
+            # than a real solution to anything
+            pass_no=1
+            max_passes=2
+            while pass_no <= max_passes:
+                command = ['rm', '-rf', containerDir]
+                logger.log("sliver_lxc.destroy: cleanup pass %d - command %s"%(pass_no,command))
+                logger.log_call(command, timeout=5)
+                command = ['btrfs', 'subvolume', 'delete', containerDir]
+                logger.log("sliver_lxc.destroy: cleanup pass %d - command %s"%(pass_no,command))
+                logger.log_call(command, timeout=5)
+                import time
+                time.sleep(1)
+                pass_no += 1
+            if os.path.exists(containerDir):
+                logger.log('sliver_lxc.destroy: could not cleanly destroy %s - giving up'%name)
+
+        if vsys_stopped: vsysStartService()