third-party-mirrors/zfs_autobackup
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Edwin Eefting 2019-10-23 21:01:21 +02:00
parent 673db7c014
commit 66727c55b0
1 changed files with 21 additions and 2 deletions
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zfs_autobackup
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@ -786,7 +786,7 @@ class ZfsDataset():
def thin(self, keep=[]):
"""determines list of snapshots that should be kept or deleted based on the thinning schedule.
"""determines list of snapshots that should be kept or deleted based on the thinning schedule. cull the herd!
keep: list of snapshots to always keep
"""
return(self.zfs_node.thinner.thin(self.our_snapshots, keep_objects=keep))
@ -795,11 +795,30 @@ class ZfsDataset():
def sync_snapshots(self, target_dataset, show_progress=False):
"""sync our snapshots to target_dataset"""
#dertermine the snapshots that are obosole so we might skip or clean some snapshots
if 'receive_resume_token' in target_dataset.properties:
resume_token=target_dataset.properties['receive_resume_token']
else:
resume_token=None
#determine snapshot we should start sending from
if not target_dataset.exists:
#we have nothing, so start from the first one
start_snapshot=self.our_snapshots[0]
elif if not target_dataset.snapshots:
# we have no snapshots on target (yet?). can we resume?
if 'receive_resume_token' in target_dataset.properties:
resume_token=target_dataset.properties['receive_resume_token']
#no snapshots yet
start_snapshot=target_dataset.our_snapshots
#dertermine the snapshots that are obsolete so we can clean along the way.
(source_keeps, source_obsoletes)=self.thin()
#XXX: pre-create target snapshot list with exist=False so the thinner can "plan ahead" what the target eventually wants
(target_keeps, target_obsoletes)=self.thin()
# inital transfer
resume_token=None
if not target_dataset.exists: