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Convert from exclusive to write lock

This commit is contained in:
Joshua Boniface 2020-10-21 11:12:36 -04:00
parent 017953c2e6
commit 88556f4a33
1 changed files with 11 additions and 11 deletions
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22
daemon-common/vm.py
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@ -276,7 +276,7 @@ def modify_vm(zk_conn, domain, restart, new_vm_config):
zkhandler.writedata(zk_conn, zk_data) zkhandler.writedata(zk_conn, zk_data)
if restart: if restart:
with zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid)): with zkhandler.writelock(zk_conn, '/domains/{}/state'.format(dom_uuid)):
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'restart' }) zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'restart' })
return True, '' return True, ''
@ -301,7 +301,7 @@ def undefine_vm(zk_conn, domain):
current_vm_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) current_vm_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
if current_vm_state != 'stop': if current_vm_state != 'stop':
# Set the domain into stop mode # Set the domain into stop mode
with zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid)): with zkhandler.writelock(zk_conn, '/domains/{}/state'.format(dom_uuid)):
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'stop' }) zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'stop' })
# Wait for 2 seconds to allow state to flow to all nodes # Wait for 2 seconds to allow state to flow to all nodes
@ -328,7 +328,7 @@ def remove_vm(zk_conn, domain):
current_vm_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) current_vm_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
if current_vm_state != 'stop': if current_vm_state != 'stop':
# Set the domain into stop mode # Set the domain into stop mode
with zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid)): with zkhandler.writelock(zk_conn, '/domains/{}/state'.format(dom_uuid)):
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'stop' }) zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'stop' })
# Wait for 2 seconds to allow state to flow to all nodes # Wait for 2 seconds to allow state to flow to all nodes
@ -360,7 +360,7 @@ def start_vm(zk_conn, domain):
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain) return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
# Set the VM to start # Set the VM to start
with zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid)): with zkhandler.writelock(zk_conn, '/domains/{}/state'.format(dom_uuid)):
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'start' }) zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'start' })
return True, 'Starting VM "{}".'.format(domain) return True, 'Starting VM "{}".'.format(domain)
@ -379,7 +379,7 @@ def restart_vm(zk_conn, domain, wait=False):
retmsg = 'Restarting VM "{}".'.format(domain) retmsg = 'Restarting VM "{}".'.format(domain)
# Set the VM to restart # Set the VM to restart
with zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid)): with zkhandler.writelock(zk_conn, '/domains/{}/state'.format(dom_uuid)):
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'restart' }) zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'restart' })
if wait: if wait:
@ -403,7 +403,7 @@ def shutdown_vm(zk_conn, domain, wait=False):
retmsg = 'Shutting down VM "{}"'.format(domain) retmsg = 'Shutting down VM "{}"'.format(domain)
# Set the VM to shutdown # Set the VM to shutdown
with zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid)): with zkhandler.writelock(zk_conn, '/domains/{}/state'.format(dom_uuid)):
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'shutdown' }) zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'shutdown' })
if wait: if wait:
@ -423,7 +423,7 @@ def stop_vm(zk_conn, domain):
current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
# Set the VM to start # Set the VM to start
with zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid)): with zkhandler.writelock(zk_conn, '/domains/{}/state'.format(dom_uuid)):
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'stop' }) zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'stop' })
return True, 'Forcibly stopping VM "{}".'.format(domain) return True, 'Forcibly stopping VM "{}".'.format(domain)
@ -440,7 +440,7 @@ def disable_vm(zk_conn, domain):
return False, 'ERROR: VM "{}" must be stopped before disabling!'.format(domain) return False, 'ERROR: VM "{}" must be stopped before disabling!'.format(domain)
# Set the VM to start # Set the VM to start
with zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid)): with zkhandler.writelock(zk_conn, '/domains/{}/state'.format(dom_uuid)):
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'disable' }) zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'disable' })
return True, 'Marked VM "{}" as disable.'.format(domain) return True, 'Marked VM "{}" as disable.'.format(domain)
@ -491,7 +491,7 @@ def move_vm(zk_conn, domain, target_node, wait=False, force_live=False):
retmsg = 'Permanently migrating VM "{}" to node "{}".'.format(domain, target_node) retmsg = 'Permanently migrating VM "{}" to node "{}".'.format(domain, target_node)
with zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid)): with zkhandler.writelock(zk_conn, '/domains/{}/state'.format(dom_uuid)):
zkhandler.writedata(zk_conn, { zkhandler.writedata(zk_conn, {
'/domains/{}/state'.format(dom_uuid): target_state, '/domains/{}/state'.format(dom_uuid): target_state,
'/domains/{}/node'.format(dom_uuid): target_node, '/domains/{}/node'.format(dom_uuid): target_node,
@ -554,7 +554,7 @@ def migrate_vm(zk_conn, domain, target_node, force_migrate, wait=False, force_li
retmsg = 'Migrating VM "{}" to node "{}".'.format(domain, target_node) retmsg = 'Migrating VM "{}" to node "{}".'.format(domain, target_node)
with zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid)): with zkhandler.writelock(zk_conn, '/domains/{}/state'.format(dom_uuid)):
zkhandler.writedata(zk_conn, { zkhandler.writedata(zk_conn, {
'/domains/{}/state'.format(dom_uuid): target_state, '/domains/{}/state'.format(dom_uuid): target_state,
'/domains/{}/node'.format(dom_uuid): target_node, '/domains/{}/node'.format(dom_uuid): target_node,
@ -592,7 +592,7 @@ def unmigrate_vm(zk_conn, domain, wait=False, force_live=False):
retmsg = 'Unmigrating VM "{}" back to node "{}".'.format(domain, target_node) retmsg = 'Unmigrating VM "{}" back to node "{}".'.format(domain, target_node)
with zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid)): with zkhandler.writelock(zk_conn, '/domains/{}/state'.format(dom_uuid)):
zkhandler.writedata(zk_conn, { zkhandler.writedata(zk_conn, {
'/domains/{}/state'.format(dom_uuid): target_state, '/domains/{}/state'.format(dom_uuid): target_state,
'/domains/{}/node'.format(dom_uuid): target_node, '/domains/{}/node'.format(dom_uuid): target_node,