third-party-mirrors/zfs_autobackup
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zfs check initial version (wip)

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This commit is contained in:
Edwin Eefting 2022-02-20 17:39:17 +01:00
parent a115f0bd17
commit 14c45d2b34
2 changed files with 9 additions and 7 deletions
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14
zfs_autobackup/ZfsCheck.py
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@ -39,8 +39,8 @@ class ZfsCheck(CliBase):
return args return args
def hash_filesystem(self, snapshot): def hash_filesystem(self, snapshot, count, bs):
""" """ recursively hash all files in this snapshot, using block_hash_tree()
:type snapshot: ZfsDataset.ZfsDataset :type snapshot: ZfsDataset.ZfsDataset
""" """
@ -54,14 +54,16 @@ class ZfsCheck(CliBase):
self.debug("Hashing tree: {}".format(mnt)) self.debug("Hashing tree: {}".format(mnt))
if not self.args.test: if not self.args.test:
for (file, block, hash) in block_hash_tree(mnt): for (file, block, hash) in block_hash_tree(mnt, count, bs):
print("{}\t{}\t{}".format(file, block, hash)) print("{}\t{}\t{}".format(file, block, hash))
finally: finally:
self.debug("Cleaning up temporary mount point")
snapshot.unmount() snapshot.unmount()
self.debug("Cleaning up temporary mount point")
self.node.run(["rmdir", mnt], hide_errors=True, valid_exitcodes=[]) self.node.run(["rmdir", mnt], hide_errors=True, valid_exitcodes=[])
# def hash_volume(self, snapshot):
def run(self): def run(self):
@ -78,9 +80,9 @@ class ZfsCheck(CliBase):
dataset_type=snapshot.parent.properties['type'] dataset_type=snapshot.parent.properties['type']
if dataset_type=='volume': if dataset_type=='volume':
self.checksum_volume(snapshot) self.checksum_volume(snapshot, self.args.count, self.args.block_size)
elif dataset_type=='filesystem': elif dataset_type=='filesystem':
self.hash_filesystem(snapshot) self.hash_filesystem(snapshot, self.args.count, self.args.block_size)
else: else:
raise Exception("huh?") raise Exception("huh?")

2
zfs_autobackup/util.py
View File

@ -36,7 +36,7 @@ def block_hash(fname, count=10000, bs=4006):
hash = hashlib.sha1() hash = hashlib.sha1()
block_nr = 0 block_nr = 0
chunk_nr = 0 chunk_nr = 0
for block in iter(lambda: f.read(4096), b""): for block in iter(lambda: f.read(bs), b""):
hash.update(block) hash.update(block)
block_nr = block_nr + 1 block_nr = block_nr + 1
if block_nr % count == 0: if block_nr % count == 0: