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Add btv gc NUMBER command

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This commit is contained in:
Martin Sekera 2020-11-24 21:20:28 +01:00
parent f58353fe87
commit 5c57e26652
1 changed files with 34 additions and 13 deletions
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45
btv
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@ -327,7 +327,6 @@ def do_create(args):
## do optional processing ## do optional processing
## ##
if snapshot.rank == 2: if snapshot.rank == 2:
## snapshot serialization ## snapshot serialization
# if there's a previous Rank 2 snapshot, compute a diff against it # if there's a previous Rank 2 snapshot, compute a diff against it
# if not or if the process fails, demote this snap to Rank 1 # if not or if the process fails, demote this snap to Rank 1
@ -493,23 +492,42 @@ def do_gc(args=None):
Drops old snapshots. Drops old snapshots.
If the only arg is "greedy", drops ALL snapshots except the youngest If the only arg is "greedy", drops ALL snapshots except the youngest
Rank 2. Rank 2. If it's a number, drops that many oldest snapshots.
""" """
if args and "greedy" in args: if args:
newest = list_snapshots(2)[-1] if args[0] == "greedy":
newest = list_snapshots(2)[-1]
if newest: if newest:
print(">>> Dropping all snapshots except the newest Rank 2 in 5 s...") print(">>> Dropping all snapshots except the newest Rank 2 in 5 s...")
time.sleep(5) time.sleep(5)
for snap in list_snapshots(): for snap in list_snapshots():
if snap.name != newest.name: if snap.name != newest.name:
snap.drop() snap.drop()
else:
print("!!! no Rank 2 snapshot exists")
sys.exit(1)
else: else:
print("!!! no Rank 2 snapshot exists") try:
sys.exit(1) count = int(args[0])
except ValueError:
print("!!! %s is not a count of snapshots to delete" %(args[0]))
sys.exit(1)
snaps = list_snapshots()[:count]
for snap in snaps:
print(" %d %s %s" %(snap.rank, snap.name, ", ".join(snap.notes)))
print(">>> These snapshots will be dropped in 5 s...")
time.sleep(5)
for snap in snaps:
snap.drop()
else: else:
counts = [0, 0, 0] # Rank 0, 1, 2 counts = [0, 0, 0] # Rank 0, 1, 2
@ -565,6 +583,9 @@ Verbs:
gc greedy gc greedy
Drop ALL snapshots except the newest Rank 2. Drop ALL snapshots except the newest Rank 2.
gc COUNT
Drop COUNT oldest snapshots.
""".format(cmd=sys.argv[0])) """.format(cmd=sys.argv[0]))
if __name__ == "__main__": if __name__ == "__main__":