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btrbk
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btrbk: check source AND targets for determining snapshot postfix

pull/30/head
Axel Burri 2015-04-07 12:57:11 +02:00
parent a90033c1aa
commit 8f9cafb359
2 changed files with 17 additions and 10 deletions
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2
ChangeLog
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@ -1,6 +1,8 @@
btrbk-current
* Bugfix: allow "0" as subvolume name (closes: #10)
* Bugfix: check source AND targets for determining snapshot postfix
(closes: #11)
btrbk-0.16

25
btrbk
View File

@ -1529,16 +1529,21 @@ MAIN:
}
else
{
# find new snapshot name
my $postfix_counter = -1;
my $postfix;
do {
$postfix_counter++;
$postfix = '.' . $timestamp . ($postfix_counter ? "_$postfix_counter" : "");
TRACE "Testing source snapshot name: $snapdir$svol$postfix";
} while(subvol($sroot, "$snapdir$svol$postfix")); # NOTE: $snapdir always has trailing slash!
$snapshot = "$sroot/$snapdir$svol$postfix";
$snapshot_name = "$svol$postfix";
# find unique snapshot name
my @lookup = keys %{$vol_info{$sroot}};
@lookup = grep s/^$snapdir// , @lookup;
foreach (@{$config_subvol->{TARGET}}){
push(@lookup, keys %{$vol_info{$_->{droot}}});
}
@lookup = grep /^$svol\.$timestamp(_[0-9]+)?$/ ,@lookup;
TRACE "Present snapshot names for \"$sroot/$svol\": " . join(', ', @lookup);
@lookup = map { /_([0-9]+)$/ ? $1 : 0 } @lookup;
@lookup = sort { $b <=> $a } @lookup;
my $postfix_counter = $lookup[0] // -1;
$postfix_counter++;
$snapshot_name = $svol . '.' . $timestamp . ($postfix_counter ? "_$postfix_counter" : "");
$snapshot = "$sroot/$snapdir$snapshot_name";
}
my $create_snapshot = config_key($config_subvol, "snapshot_create_always");