Refactor autobackups to make more sense
This commit is contained in:
parent
fd87a28eb3
commit
e938140414
|
@ -25,7 +25,6 @@ from json import dump as jdump
|
|||
from os import popen, makedirs, path, scandir
|
||||
from shutil import rmtree
|
||||
from subprocess import run, PIPE
|
||||
from time import time
|
||||
|
||||
from daemon_lib.common import run_os_command
|
||||
from daemon_lib.config import get_autobackup_configuration
|
||||
|
@ -136,7 +135,7 @@ def send_execution_summary_report(
|
|||
f" {backup_date}: Success in {backup.get('runtime_secs', 0)} seconds, ID {datestring}, type {backup.get('type', 'unknown')}"
|
||||
)
|
||||
email.append(
|
||||
f" Backup contains {len(backup.get('backup_files'))} files totaling {ceph.format_bytes_tohuman(backup.get('backup_size_bytes', 0))} ({backup.get('backup_size_bytes', 0)} bytes)"
|
||||
f" Backup contains {len(backup.get('export_files'))} files totaling {ceph.format_bytes_tohuman(backup.get('export_size_bytes', 0))} ({backup.get('export_size_bytes', 0)} bytes)"
|
||||
)
|
||||
else:
|
||||
email.append(
|
||||
|
@ -151,6 +150,461 @@ def send_execution_summary_report(
|
|||
log_err(f"Failed to send report email: {e}")
|
||||
|
||||
|
||||
def run_vm_backup(
|
||||
zkhandler, celery, current_stage, total_stages, config, vm_detail, force_full=False
|
||||
):
|
||||
vm_name = vm_detail["name"]
|
||||
dom_uuid = vm_detail["uuid"]
|
||||
backup_suffixed_path = (
|
||||
f"{config['backup_root_path']}/{config['backup_root_suffix']}"
|
||||
)
|
||||
vm_backup_path = f"{backup_suffixed_path}/{vm_name}"
|
||||
autobackup_state_file = f"{vm_backup_path}/.autobackup.json"
|
||||
full_interval = config["backup_schedule"]["full_interval"]
|
||||
full_retention = config["backup_schedule"]["full_retention"]
|
||||
|
||||
if not path.exists(vm_backup_path) or not path.exists(autobackup_state_file):
|
||||
# There are no existing backups so the list is empty
|
||||
state_data = dict()
|
||||
tracked_backups = list()
|
||||
else:
|
||||
with open(autobackup_state_file) as fh:
|
||||
state_data = jload(fh)
|
||||
tracked_backups = state_data["tracked_backups"]
|
||||
|
||||
full_backups = [b for b in tracked_backups if b["type"] == "full"]
|
||||
if len(full_backups) > 0:
|
||||
last_full_backup = full_backups[0]
|
||||
last_full_backup_idx = tracked_backups.index(last_full_backup)
|
||||
if force_full:
|
||||
this_backup_incremental_parent = None
|
||||
this_backup_retain_snapshot = True
|
||||
elif last_full_backup_idx >= full_interval - 1:
|
||||
this_backup_incremental_parent = None
|
||||
this_backup_retain_snapshot = True
|
||||
else:
|
||||
this_backup_incremental_parent = last_full_backup["datestring"]
|
||||
this_backup_retain_snapshot = False
|
||||
else:
|
||||
# The very first ackup must be full to start the tree
|
||||
this_backup_incremental_parent = None
|
||||
this_backup_retain_snapshot = True
|
||||
|
||||
export_type = (
|
||||
"incremental" if this_backup_incremental_parent is not None else "full"
|
||||
)
|
||||
|
||||
now = datetime.now()
|
||||
datestring = now.strftime("%Y%m%d%H%M%S")
|
||||
snapshot_name = f"ab{datestring}"
|
||||
|
||||
# Take the VM snapshot (vm.vm_worker_create_snapshot)
|
||||
snap_list = list()
|
||||
|
||||
failure = False
|
||||
export_files = None
|
||||
export_files_size = 0
|
||||
|
||||
def update_tracked_backups():
|
||||
# Read export file to get details
|
||||
backup_json_file = (
|
||||
f"{backup_suffixed_path}/{vm_name}/{snapshot_name}/snapshot.json"
|
||||
)
|
||||
with open(backup_json_file) as fh:
|
||||
backup_json = jload(fh)
|
||||
tracked_backups.insert(0, backup_json)
|
||||
|
||||
state_data["tracked_backups"] = tracked_backups
|
||||
with open(autobackup_state_file, "w") as fh:
|
||||
jdump(state_data, fh)
|
||||
|
||||
return tracked_backups
|
||||
|
||||
def write_backup_summary(success=False, message=""):
|
||||
ttotal = (datetime.now() - now).total_seconds()
|
||||
export_details = {
|
||||
"type": export_type,
|
||||
"result": success,
|
||||
"message": message,
|
||||
"datestring": datestring,
|
||||
"runtime_secs": ttotal,
|
||||
"snapshot_name": snapshot_name,
|
||||
"incremental_parent": this_backup_incremental_parent,
|
||||
"vm_detail": vm_detail,
|
||||
"export_files": export_files,
|
||||
"export_size_bytes": export_files_size,
|
||||
}
|
||||
try:
|
||||
with open(
|
||||
f"{backup_suffixed_path}/{vm_name}/{snapshot_name}/snapshot.json",
|
||||
"w",
|
||||
) as fh:
|
||||
jdump(export_details, fh)
|
||||
except Exception as e:
|
||||
log_err(celery, f"Error exporting snapshot details: {e}")
|
||||
return False, e
|
||||
|
||||
return True, ""
|
||||
|
||||
def cleanup_failure():
|
||||
for snapshot in snap_list:
|
||||
rbd, snapshot_name = snapshot.split("@")
|
||||
pool, volume = rbd.split("/")
|
||||
# We capture no output here, because if this fails too we're in a deep
|
||||
# error chain and will just ignore it
|
||||
ceph.remove_snapshot(zkhandler, pool, volume, snapshot_name)
|
||||
|
||||
rbd_list = zkhandler.read(("domain.storage.volumes", dom_uuid)).split(",")
|
||||
final_stage = (
|
||||
current_stage
|
||||
+ 5
|
||||
+ len(rbd_list)
|
||||
+ (len(rbd_list) if this_backup_retain_snapshot else 0)
|
||||
)
|
||||
|
||||
for rbd in rbd_list:
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Creating RBD snapshot of {rbd}",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
pool, volume = rbd.split("/")
|
||||
ret, msg = ceph.add_snapshot(
|
||||
zkhandler, pool, volume, snapshot_name, zk_only=False
|
||||
)
|
||||
if not ret:
|
||||
cleanup_failure()
|
||||
error_message = msg.replace("ERROR: ", "")
|
||||
log_err(celery, error_message)
|
||||
failure = True
|
||||
break
|
||||
else:
|
||||
snap_list.append(f"{pool}/{volume}@{snapshot_name}")
|
||||
|
||||
if failure:
|
||||
error_message = (f"[{vm_name}] Error in snapshot export, skipping",)
|
||||
current_stage = final_stage
|
||||
write_backup_summary(message=error_message)
|
||||
tracked_backups = update_tracked_backups()
|
||||
update(
|
||||
celery,
|
||||
error_message,
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
return tracked_backups, current_stage
|
||||
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Creating VM configuration snapshot",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
# Get the current domain XML
|
||||
vm_config = zkhandler.read(("domain.xml", dom_uuid))
|
||||
|
||||
# Add the snapshot entry to Zookeeper
|
||||
ret = zkhandler.write(
|
||||
[
|
||||
(
|
||||
(
|
||||
"domain.snapshots",
|
||||
dom_uuid,
|
||||
"domain_snapshot.name",
|
||||
snapshot_name,
|
||||
),
|
||||
snapshot_name,
|
||||
),
|
||||
(
|
||||
(
|
||||
"domain.snapshots",
|
||||
dom_uuid,
|
||||
"domain_snapshot.timestamp",
|
||||
snapshot_name,
|
||||
),
|
||||
now.strftime("%s"),
|
||||
),
|
||||
(
|
||||
(
|
||||
"domain.snapshots",
|
||||
dom_uuid,
|
||||
"domain_snapshot.xml",
|
||||
snapshot_name,
|
||||
),
|
||||
vm_config,
|
||||
),
|
||||
(
|
||||
(
|
||||
"domain.snapshots",
|
||||
dom_uuid,
|
||||
"domain_snapshot.rbd_snapshots",
|
||||
snapshot_name,
|
||||
),
|
||||
",".join(snap_list),
|
||||
),
|
||||
]
|
||||
)
|
||||
if not ret:
|
||||
error_message = (f"[{vm_name}] Error in snapshot export, skipping",)
|
||||
current_stage = final_stage
|
||||
log_err(celery, error_message)
|
||||
write_backup_summary(message=error_message)
|
||||
tracked_backups = update_tracked_backups()
|
||||
update(
|
||||
celery,
|
||||
error_message,
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
return tracked_backups, current_stage
|
||||
|
||||
# Export the snapshot (vm.vm_worker_export_snapshot)
|
||||
export_target_path = f"{backup_suffixed_path}/{vm_name}/{snapshot_name}/images"
|
||||
|
||||
try:
|
||||
makedirs(export_target_path)
|
||||
except Exception as e:
|
||||
error_message = (
|
||||
f"[{vm_name}] Failed to create target directory '{export_target_path}': {e}",
|
||||
)
|
||||
current_stage = final_stage
|
||||
log_err(celery, error_message)
|
||||
write_backup_summary(message=error_message)
|
||||
tracked_backups = update_tracked_backups()
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Error in snapshot export, skipping",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
return tracked_backups, current_stage
|
||||
|
||||
def export_cleanup():
|
||||
from shutil import rmtree
|
||||
|
||||
rmtree(f"{backup_suffixed_path}/{vm_name}/{snapshot_name}")
|
||||
|
||||
# Set the export filetype
|
||||
if this_backup_incremental_parent is not None:
|
||||
export_fileext = "rbddiff"
|
||||
else:
|
||||
export_fileext = "rbdimg"
|
||||
|
||||
snapshot_volumes = list()
|
||||
for rbdsnap in snap_list:
|
||||
pool, _volume = rbdsnap.split("/")
|
||||
volume, name = _volume.split("@")
|
||||
ret, snapshots = ceph.get_list_snapshot(
|
||||
zkhandler, pool, volume, limit=name, is_fuzzy=False
|
||||
)
|
||||
if ret:
|
||||
snapshot_volumes += snapshots
|
||||
|
||||
export_files = list()
|
||||
for snapshot_volume in snapshot_volumes:
|
||||
snap_pool = snapshot_volume["pool"]
|
||||
snap_volume = snapshot_volume["volume"]
|
||||
snap_snapshot_name = snapshot_volume["snapshot"]
|
||||
snap_size = snapshot_volume["stats"]["size"]
|
||||
snap_str = f"{snap_pool}/{snap_volume}@{snap_snapshot_name}"
|
||||
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Exporting RBD snapshot {snap_str}",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
if this_backup_incremental_parent is not None:
|
||||
retcode, stdout, stderr = run_os_command(
|
||||
f"rbd export-diff --from-snap {this_backup_incremental_parent} {snap_pool}/{snap_volume}@{snap_snapshot_name} {export_target_path}/{snap_pool}.{snap_volume}.{export_fileext}"
|
||||
)
|
||||
if retcode:
|
||||
error_message = (
|
||||
f"[{vm_name}] Failed to export snapshot for volume(s) '{snap_pool}/{snap_volume}'",
|
||||
)
|
||||
failure = True
|
||||
break
|
||||
else:
|
||||
export_files.append(
|
||||
(
|
||||
f"images/{snap_pool}.{snap_volume}.{export_fileext}",
|
||||
snap_size,
|
||||
)
|
||||
)
|
||||
else:
|
||||
retcode, stdout, stderr = run_os_command(
|
||||
f"rbd export --export-format 2 {snap_pool}/{snap_volume}@{snap_snapshot_name} {export_target_path}/{snap_pool}.{snap_volume}.{export_fileext}"
|
||||
)
|
||||
if retcode:
|
||||
error_message = (
|
||||
f"[{vm_name}] Failed to export snapshot for volume(s) '{snap_pool}/{snap_volume}'",
|
||||
)
|
||||
failure = True
|
||||
break
|
||||
else:
|
||||
export_files.append(
|
||||
(
|
||||
f"images/{snap_pool}.{snap_volume}.{export_fileext}",
|
||||
snap_size,
|
||||
)
|
||||
)
|
||||
|
||||
if failure:
|
||||
current_stage = final_stage
|
||||
log_err(celery, error_message)
|
||||
write_backup_summary(message=error_message)
|
||||
tracked_backups = update_tracked_backups()
|
||||
update(
|
||||
celery,
|
||||
error_message,
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
return tracked_backups, current_stage
|
||||
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Writing snapshot details",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
def get_dir_size(pathname):
|
||||
total = 0
|
||||
with scandir(pathname) as it:
|
||||
for entry in it:
|
||||
if entry.is_file():
|
||||
total += entry.stat().st_size
|
||||
elif entry.is_dir():
|
||||
total += get_dir_size(entry.path)
|
||||
return total
|
||||
|
||||
export_files_size = get_dir_size(export_target_path)
|
||||
|
||||
ret, e = write_backup_summary(success=True)
|
||||
if not ret:
|
||||
error_message = (f"[{vm_name}] Failed to export configuration snapshot: {e}",)
|
||||
current_stage = final_stage
|
||||
log_err(celery, error_message)
|
||||
write_backup_summary(message=error_message)
|
||||
tracked_backups = update_tracked_backups()
|
||||
update(
|
||||
celery,
|
||||
error_message,
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
return tracked_backups, current_stage
|
||||
|
||||
# Clean up the snapshot (vm.vm_worker_remove_snapshot)
|
||||
if not this_backup_retain_snapshot:
|
||||
for snap in snap_list:
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Removing RBD snapshot {snap}",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
rbd, name = snap.split("@")
|
||||
pool, volume = rbd.split("/")
|
||||
ret, msg = ceph.remove_snapshot(zkhandler, pool, volume, name)
|
||||
if not ret:
|
||||
error_message = msg.replace("ERROR: ", f"[{vm_name}] ")
|
||||
failure = True
|
||||
break
|
||||
|
||||
if failure:
|
||||
current_stage = final_stage
|
||||
log_err(celery, error_message)
|
||||
write_backup_summary(message=error_message)
|
||||
tracked_backups = update_tracked_backups()
|
||||
update(
|
||||
celery,
|
||||
error_message,
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
return tracked_backups, current_stage
|
||||
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Removing VM configuration snapshot",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
ret = zkhandler.delete(
|
||||
("domain.snapshots", dom_uuid, "domain_snapshot.name", snapshot_name)
|
||||
)
|
||||
if not ret:
|
||||
error_message = (f"[{vm_name}] Failed to remove VM snapshot; continuing",)
|
||||
log_err(celery, error_message)
|
||||
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"Finding obsolete incremental backups for '{vm_name}'",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
marked_for_deletion = list()
|
||||
# Find any full backups that are expired
|
||||
found_full_count = 0
|
||||
for backup in tracked_backups:
|
||||
if backup["type"] == "full":
|
||||
found_full_count += 1
|
||||
if found_full_count > full_retention:
|
||||
marked_for_deletion.append(backup)
|
||||
# Find any incremental backups that depend on marked parents
|
||||
for backup in tracked_backups:
|
||||
if backup["type"] == "incremental" and backup["incremental_parent"] in [
|
||||
b["datestring"] for b in marked_for_deletion
|
||||
]:
|
||||
marked_for_deletion.append(backup)
|
||||
|
||||
current_stage += 1
|
||||
if len(marked_for_deletion) > 0:
|
||||
update(
|
||||
celery,
|
||||
f"Cleaning up aged out backups for '{vm_name}'",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
for backup_to_delete in marked_for_deletion:
|
||||
ret = vm.vm_worker_remove_snapshot(
|
||||
zkhandler, None, vm_name, backup_to_delete["snapshot_name"]
|
||||
)
|
||||
if ret is False:
|
||||
error_message = f"Failed to remove obsolete backup snapshot '{backup_to_delete['snapshot_name']}', leaving in tracked backups"
|
||||
log_err(celery, error_message)
|
||||
else:
|
||||
rmtree(f"{vm_backup_path}/{backup_to_delete['snapshot_name']}")
|
||||
tracked_backups.remove(backup_to_delete)
|
||||
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
"Updating tracked backups",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
tracked_backups = update_tracked_backups()
|
||||
return tracked_backups, current_stage
|
||||
|
||||
|
||||
def worker_cluster_autobackup(
|
||||
zkhandler, celery, force_full=False, email_recipients=None
|
||||
):
|
||||
|
@ -202,7 +656,6 @@ def worker_cluster_autobackup(
|
|||
makedirs(backup_suffixed_path)
|
||||
|
||||
full_interval = config["backup_schedule"]["full_interval"]
|
||||
full_retention = config["backup_schedule"]["full_retention"]
|
||||
|
||||
backup_vms = list()
|
||||
for vm_detail in vm_list:
|
||||
|
@ -296,419 +749,16 @@ def worker_cluster_autobackup(
|
|||
|
||||
# Execute the backup: take a snapshot, then export the snapshot
|
||||
for vm_detail in backup_vms:
|
||||
vm_name = vm_detail["name"]
|
||||
dom_uuid = vm_detail["uuid"]
|
||||
vm_backup_path = f"{backup_suffixed_path}/{vm_name}"
|
||||
autobackup_state_file = f"{vm_backup_path}/.autobackup.json"
|
||||
if not path.exists(vm_backup_path) or not path.exists(autobackup_state_file):
|
||||
# There are no existing backups so the list is empty
|
||||
state_data = dict()
|
||||
tracked_backups = list()
|
||||
else:
|
||||
with open(autobackup_state_file) as fh:
|
||||
state_data = jload(fh)
|
||||
tracked_backups = state_data["tracked_backups"]
|
||||
|
||||
full_backups = [b for b in tracked_backups if b["type"] == "full"]
|
||||
if len(full_backups) > 0:
|
||||
last_full_backup = full_backups[0]
|
||||
last_full_backup_idx = tracked_backups.index(last_full_backup)
|
||||
if force_full:
|
||||
this_backup_incremental_parent = None
|
||||
this_backup_retain_snapshot = True
|
||||
elif last_full_backup_idx >= full_interval - 1:
|
||||
this_backup_incremental_parent = None
|
||||
this_backup_retain_snapshot = True
|
||||
else:
|
||||
this_backup_incremental_parent = last_full_backup["datestring"]
|
||||
this_backup_retain_snapshot = False
|
||||
else:
|
||||
# The very first ackup must be full to start the tree
|
||||
this_backup_incremental_parent = None
|
||||
this_backup_retain_snapshot = True
|
||||
|
||||
now = datetime.now()
|
||||
datestring = now.strftime("%Y%m%d%H%M%S")
|
||||
snapshot_name = f"ab{datestring}"
|
||||
|
||||
# Take the VM snapshot (vm.vm_worker_create_snapshot)
|
||||
snap_list = list()
|
||||
|
||||
def cleanup_failure():
|
||||
for snapshot in snap_list:
|
||||
rbd, snapshot_name = snapshot.split("@")
|
||||
pool, volume = rbd.split("/")
|
||||
# We capture no output here, because if this fails too we're in a deep
|
||||
# error chain and will just ignore it
|
||||
ceph.remove_snapshot(zkhandler, pool, volume, snapshot_name)
|
||||
|
||||
rbd_list = zkhandler.read(("domain.storage.volumes", dom_uuid)).split(",")
|
||||
|
||||
for rbd in rbd_list:
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Creating RBD snapshot of {rbd}",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
pool, volume = rbd.split("/")
|
||||
ret, msg = ceph.add_snapshot(
|
||||
zkhandler, pool, volume, snapshot_name, zk_only=False
|
||||
)
|
||||
if not ret:
|
||||
cleanup_failure()
|
||||
error_message = msg.replace("ERROR: ", "")
|
||||
log_err(celery, error_message)
|
||||
send_execution_failure_report(
|
||||
(celery, current_stage, total_stages),
|
||||
config,
|
||||
recipients=email_recipients,
|
||||
error=error_message,
|
||||
)
|
||||
fail(celery, error_message)
|
||||
return False
|
||||
else:
|
||||
snap_list.append(f"{pool}/{volume}@{snapshot_name}")
|
||||
|
||||
current_stage += 1
|
||||
update(
|
||||
summary, current_stage = run_vm_backup(
|
||||
zkhandler,
|
||||
celery,
|
||||
f"[{vm_name}] Creating VM configuration snapshot",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
current_stage,
|
||||
total_stages,
|
||||
config,
|
||||
vm_detail,
|
||||
force_full=force_full,
|
||||
)
|
||||
|
||||
# Get the current timestamp
|
||||
tstart = time()
|
||||
|
||||
# Get the current domain XML
|
||||
vm_config = zkhandler.read(("domain.xml", dom_uuid))
|
||||
|
||||
# Add the snapshot entry to Zookeeper
|
||||
zkhandler.write(
|
||||
[
|
||||
(
|
||||
(
|
||||
"domain.snapshots",
|
||||
dom_uuid,
|
||||
"domain_snapshot.name",
|
||||
snapshot_name,
|
||||
),
|
||||
snapshot_name,
|
||||
),
|
||||
(
|
||||
(
|
||||
"domain.snapshots",
|
||||
dom_uuid,
|
||||
"domain_snapshot.timestamp",
|
||||
snapshot_name,
|
||||
),
|
||||
tstart,
|
||||
),
|
||||
(
|
||||
(
|
||||
"domain.snapshots",
|
||||
dom_uuid,
|
||||
"domain_snapshot.xml",
|
||||
snapshot_name,
|
||||
),
|
||||
vm_config,
|
||||
),
|
||||
(
|
||||
(
|
||||
"domain.snapshots",
|
||||
dom_uuid,
|
||||
"domain_snapshot.rbd_snapshots",
|
||||
snapshot_name,
|
||||
),
|
||||
",".join(snap_list),
|
||||
),
|
||||
]
|
||||
)
|
||||
|
||||
# Export the snapshot (vm.vm_worker_export_snapshot)
|
||||
export_target_path = f"{backup_suffixed_path}/{vm_name}/{snapshot_name}/images"
|
||||
|
||||
try:
|
||||
makedirs(export_target_path)
|
||||
except Exception as e:
|
||||
error_message = (
|
||||
f"[{vm_name}] Failed to create target directory '{export_target_path}': {e}",
|
||||
)
|
||||
log_err(celery, error_message)
|
||||
send_execution_failure_report(
|
||||
(celery, current_stage, total_stages),
|
||||
config,
|
||||
recipients=email_recipients,
|
||||
error=error_message,
|
||||
)
|
||||
fail(celery, error_message)
|
||||
return False
|
||||
|
||||
def export_cleanup():
|
||||
from shutil import rmtree
|
||||
|
||||
rmtree(f"{backup_suffixed_path}/{vm_name}/{snapshot_name}")
|
||||
|
||||
export_type = (
|
||||
"incremental" if this_backup_incremental_parent is not None else "full"
|
||||
)
|
||||
|
||||
# Set the export filetype
|
||||
if this_backup_incremental_parent is not None:
|
||||
export_fileext = "rbddiff"
|
||||
else:
|
||||
export_fileext = "rbdimg"
|
||||
|
||||
failure = False
|
||||
export_files = None
|
||||
export_files_size = 0
|
||||
|
||||
def write_backup_summary(success=False, message=""):
|
||||
export_details = {
|
||||
"type": export_type,
|
||||
"result": success,
|
||||
"message": message,
|
||||
"datestring": datestring,
|
||||
"snapshot_name": snapshot_name,
|
||||
"incremental_parent": this_backup_incremental_parent,
|
||||
"vm_detail": vm_detail,
|
||||
"export_files": export_files,
|
||||
"export_size_bytes": export_files_size,
|
||||
}
|
||||
try:
|
||||
with open(
|
||||
f"{backup_suffixed_path}/{vm_name}/{snapshot_name}/snapshot.json",
|
||||
"w",
|
||||
) as fh:
|
||||
jdump(export_details, fh)
|
||||
except Exception as e:
|
||||
log_err(celery, f"Error exporting snapshot details: {e}")
|
||||
return False, e
|
||||
return True, ""
|
||||
|
||||
snapshot_volumes = list()
|
||||
for rbdsnap in snap_list:
|
||||
pool, _volume = rbdsnap.split("/")
|
||||
volume, name = _volume.split("@")
|
||||
ret, snapshots = ceph.get_list_snapshot(
|
||||
zkhandler, pool, volume, limit=name, is_fuzzy=False
|
||||
)
|
||||
if ret:
|
||||
snapshot_volumes += snapshots
|
||||
|
||||
export_files = list()
|
||||
for snapshot_volume in snapshot_volumes:
|
||||
snap_pool = snapshot_volume["pool"]
|
||||
snap_volume = snapshot_volume["volume"]
|
||||
snap_snapshot_name = snapshot_volume["snapshot"]
|
||||
snap_size = snapshot_volume["stats"]["size"]
|
||||
snap_str = f"{snap_pool}/{snap_volume}@{snap_snapshot_name}"
|
||||
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Exporting RBD snapshot {snap_str}",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
if this_backup_incremental_parent is not None:
|
||||
retcode, stdout, stderr = run_os_command(
|
||||
f"rbd export-diff --from-snap {this_backup_incremental_parent} {snap_pool}/{snap_volume}@{snap_snapshot_name} {export_target_path}/{snap_pool}.{snap_volume}.{export_fileext}"
|
||||
)
|
||||
if retcode:
|
||||
error_message = (
|
||||
f"[{vm_name}] Failed to export snapshot for volume(s) '{snap_pool}/{snap_volume}'",
|
||||
)
|
||||
write_backup_summary(message=error_message)
|
||||
failure = True
|
||||
break
|
||||
else:
|
||||
export_files.append(
|
||||
(
|
||||
f"images/{snap_pool}.{snap_volume}.{export_fileext}",
|
||||
snap_size,
|
||||
)
|
||||
)
|
||||
else:
|
||||
retcode, stdout, stderr = run_os_command(
|
||||
f"rbd export --export-format 2 {snap_pool}/{snap_volume}@{snap_snapshot_name} {export_target_path}/{snap_pool}.{snap_volume}.{export_fileext}"
|
||||
)
|
||||
if retcode:
|
||||
error_message = (
|
||||
f"[{vm_name}] Failed to export snapshot for volume(s) '{snap_pool}/{snap_volume}'",
|
||||
)
|
||||
write_backup_summary(message=error_message)
|
||||
failure = True
|
||||
break
|
||||
else:
|
||||
export_files.append(
|
||||
(
|
||||
f"images/{snap_pool}.{snap_volume}.{export_fileext}",
|
||||
snap_size,
|
||||
)
|
||||
)
|
||||
|
||||
if failure:
|
||||
current_stage += 6
|
||||
if not this_backup_retain_snapshot:
|
||||
current_stage += len(snap_list)
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Error in snapshot export, skipping",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
continue
|
||||
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Writing snapshot details",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
def get_dir_size(pathname):
|
||||
total = 0
|
||||
with scandir(pathname) as it:
|
||||
for entry in it:
|
||||
if entry.is_file():
|
||||
total += entry.stat().st_size
|
||||
elif entry.is_dir():
|
||||
total += get_dir_size(entry.path)
|
||||
return total
|
||||
|
||||
export_files_size = get_dir_size(export_target_path)
|
||||
|
||||
ret, e = write_backup_summary(success=True)
|
||||
if not ret:
|
||||
error_message = (
|
||||
f"[{vm_name}] Failed to export configuration snapshot: {e}",
|
||||
)
|
||||
write_backup_summary(message=error_message)
|
||||
current_stage += 5
|
||||
if not this_backup_retain_snapshot:
|
||||
current_stage += len(snap_list)
|
||||
update(
|
||||
celery,
|
||||
error_message,
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
continue
|
||||
|
||||
# Clean up the snapshot (vm.vm_worker_remove_snapshot)
|
||||
if not this_backup_retain_snapshot:
|
||||
for snap in snap_list:
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Removing RBD snapshot {snap}",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
rbd, name = snap.split("@")
|
||||
pool, volume = rbd.split("/")
|
||||
ret, msg = ceph.remove_snapshot(zkhandler, pool, volume, name)
|
||||
if not ret:
|
||||
error_message = msg.replace("ERROR: ", "")
|
||||
write_backup_summary(message=error_message)
|
||||
failure = True
|
||||
break
|
||||
|
||||
if failure:
|
||||
current_stage += 4
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Error in snapshot export, skipping",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
continue
|
||||
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"[{vm_name}] Removing VM configuration snapshot",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
ret = zkhandler.delete(
|
||||
("domain.snapshots", dom_uuid, "domain_snapshot.name", snapshot_name)
|
||||
)
|
||||
if not ret:
|
||||
error_message = (
|
||||
f"[{vm_name}] Failed to remove VM snapshot; continuing",
|
||||
)
|
||||
log_err(celery, error_message)
|
||||
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
f"Finding obsolete incremental backups for '{vm_name}'",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
# Read export file to get details
|
||||
backup_json_file = f"{vm_backup_path}/{snapshot_name}/snapshot.json"
|
||||
with open(backup_json_file) as fh:
|
||||
backup_json = jload(fh)
|
||||
tracked_backups.insert(0, backup_json)
|
||||
|
||||
marked_for_deletion = list()
|
||||
# Find any full backups that are expired
|
||||
found_full_count = 0
|
||||
for backup in tracked_backups:
|
||||
if backup["type"] == "full":
|
||||
found_full_count += 1
|
||||
if found_full_count > full_retention:
|
||||
marked_for_deletion.append(backup)
|
||||
# Find any incremental backups that depend on marked parents
|
||||
for backup in tracked_backups:
|
||||
if backup["type"] == "incremental" and backup["incremental_parent"] in [
|
||||
b["datestring"] for b in marked_for_deletion
|
||||
]:
|
||||
marked_for_deletion.append(backup)
|
||||
|
||||
current_stage += 1
|
||||
if len(marked_for_deletion) > 0:
|
||||
update(
|
||||
celery,
|
||||
f"Cleaning up aged out backups for '{vm_name}'",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
|
||||
for backup_to_delete in marked_for_deletion:
|
||||
ret = vm.vm_worker_remove_snapshot(
|
||||
zkhandler, None, vm_name, backup_to_delete["snapshot_name"]
|
||||
)
|
||||
if ret is False:
|
||||
error_message = f"Failed to remove obsolete backup snapshot '{backup_to_delete['snapshot_name']}', leaving in tracked backups"
|
||||
log_err(celery, error_message)
|
||||
else:
|
||||
rmtree(f"{vm_backup_path}/{backup_to_delete['snapshot_name']}")
|
||||
tracked_backups.remove(backup_to_delete)
|
||||
|
||||
current_stage += 1
|
||||
update(
|
||||
celery,
|
||||
"Updating tracked backups",
|
||||
current=current_stage,
|
||||
total=total_stages,
|
||||
)
|
||||
state_data["tracked_backups"] = tracked_backups
|
||||
with open(autobackup_state_file, "w") as fh:
|
||||
jdump(state_data, fh)
|
||||
|
||||
backup_summary[vm_detail["name"]] = tracked_backups
|
||||
backup_summary[vm_detail["name"]] = summary
|
||||
|
||||
# Handle automount unmount commands
|
||||
if config["auto_mount_enabled"]:
|
||||
|
|
Loading…
Reference in New Issue