patrick/zfs_autobackup
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test and fix resume edge-case

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This commit is contained in:
Edwin Eefting
2021-05-26 23:06:19 +02:00
parent 75d0a3cc7e
commit a2f3aee5b1
3 changed files with 43 additions and 10 deletions
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19
zfs_autobackup/ZfsDataset.py
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@ -679,6 +679,7 @@ class ZfsDataset:
def abort_resume(self):
"""abort current resume state"""
self.debug("Aborting resume")
self.zfs_node.run(["zfs", "recv", "-A", self.name])
def rollback(self):
@ -901,14 +902,18 @@ class ZfsDataset:
"""
if 'receive_resume_token' in target_dataset.properties:
resume_token = target_dataset.properties['receive_resume_token']
# not valid anymore?
resume_snapshot = self.get_resume_snapshot(resume_token)
if not resume_snapshot or start_snapshot.snapshot_name != resume_snapshot.snapshot_name:
target_dataset.verbose("Cant resume, resume token no longer valid.")
if start_snapshot==None:
target_dataset.verbose("Aborting resume, its obsolete.")
target_dataset.abort_resume()
else:
return resume_token
resume_token = target_dataset.properties['receive_resume_token']
# not valid anymore
resume_snapshot = self.get_resume_snapshot(resume_token)
if not resume_snapshot or start_snapshot.snapshot_name != resume_snapshot.snapshot_name:
target_dataset.verbose("Aborting resume, its no longer valid.")
target_dataset.abort_resume()
else:
return resume_token
def _plan_sync(self, target_dataset, also_other_snapshots):
"""plan where to start syncing and what to sync and what to keep
@ -1075,7 +1080,7 @@ class ZfsDataset:
source_snapshot.debug("skipped (target doesn't need it)")
# was it actually a resume?
if resume_token:
target_dataset.debug("aborting resume, since we don't want that snapshot anymore")
target_dataset.verbose("Aborting resume, we dont want that snapshot anymore.")
target_dataset.abort_resume()
resume_token = None