+# List snapshots stored.
+# Syntax: $0 --data=DATADIR list-snapshots
+def cmd_list_snapshots():
+ store = lbs.LowlevelDataStore(options.store)
+ for s in sorted(store.list_snapshots()):
+ print s
+
+# List size of data needed for each snapshot.
+# Syntax: $0 --data=DATADIR list-snapshot-sizes
+def cmd_list_snapshot_sizes():
+ lowlevel = lbs.LowlevelDataStore(options.store)
+ store = lbs.ObjectStore(lowlevel)
+ previous = set()
+ for s in sorted(lowlevel.list_snapshots()):
+ d = lbs.parse_full(store.load_snapshot(s))
+ segments = d['Segments'].split()
+ (size, added, removed) = (0, 0, 0)
+ for seg in segments:
+ segsize = lowlevel.lowlevel_stat(seg + ".tar.gpg")['size']
+ size += segsize
+ if seg not in previous: added += segsize
+ for seg in previous:
+ if seg not in segments:
+ removed += lowlevel.lowlevel_stat(seg + ".tar.gpg")['size']
+ previous = set(segments)
+ print "%s: %.3f +%.3f -%.3f" % (s, size / 1024.0**2, added / 1024.0**2, removed / 1024.0**2)
+
+# Build checksum list for objects in the given segments
+def cmd_object_checksums(segments):
+ lowlevel = lbs.LowlevelDataStore(options.store)
+ store = lbs.ObjectStore(lowlevel)
+ for s in segments:
+ for (o, data) in store.load_segment(s):
+ csum = lbs.ChecksumCreator().update(data).compute()
+ print "%s/%s:%d:%s" % (s, o, len(data), csum)
+ store.cleanup()
+
+# Read a snapshot file
+def cmd_read_snapshots(snapshots):
+ get_passphrase()
+ lowlevel = lbs.LowlevelDataStore(options.store)
+ store = lbs.ObjectStore(lowlevel)
+ for s in snapshots:
+ d = lbs.parse_full(store.load_snapshot(s))
+ print d
+ print d['Segments'].split()
+ store.cleanup()
+
+# Verify snapshot integrity
+def cmd_verify_snapshots(snapshots):
+ get_passphrase()
+ lowlevel = lbs.LowlevelDataStore(options.store)
+ store = lbs.ObjectStore(lowlevel)
+ for s in snapshots:
+ print "#### Snapshot", s
+ d = lbs.parse_full(store.load_snapshot(s))
+ print "## Root:", d['Root']
+ metadata = lbs.iterate_metadata(store, d['Root'])
+ for m in metadata:
+ if m.fields['type'] != '-': continue
+ print "%s [%d bytes]" % (m.fields['name'], int(m.fields['size']))
+ verifier = lbs.ChecksumVerifier(m.fields['checksum'])
+ size = 0
+ for block in m.data():
+ data = store.get(block)
+ verifier.update(data)
+ size += len(data)
+ if int(m.fields['size']) != size:
+ raise ValueError("File size does not match!")
+ if not verifier.valid():
+ raise ValueError("Bad checksum found")
+ store.cleanup()
+