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virt-make-fs: Fix estimation when making btrfs (RHBZ#816098).

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This also disables data and metadata duplication, which is not very
useful on a constructed filesystem on a virtual disk.
This commit is contained in:
Richard W.M. Jones
2012-05-03 14:31:37 +01:00
parent 93734c78d8
commit 0cc3525142
1 changed files with 12 additions and 1 deletions
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13
tools/virt-make-fs
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@@ -380,6 +380,13 @@ if ($type eq "ntfs") {
$estimate += 4 * 1024 * 1024; # NTFS journal.
}
if ($type eq "btrfs") {
# For BTRFS, the minimum metadata allocation is 256MB, with data
# additional to that. Note that we disable data and metadata
# duplication below.
$estimate += 256 * 1024 * 1024;
}
$estimate *= 1.10; # Add 10%, see above.
# Calculate the output size.
@@ -448,7 +455,11 @@ eval {
print STDERR "creating $type filesystem on $dev ...\n" if $debug;
# Create the filesystem.
$g->mkfs ($type, $dev);
if ($type ne "btrfs") {
$g->mkfs ($type, $dev);
} else {
$g->mkfs_btrfs ([$dev], datatype => "single", metadata => "single");
}
$g->mount ($dev, "/");
# Copy the data in.