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Date: Mon, 3 Mar 2025 08:31:24 +0100
From: Wolfgang Bumiller <w.bumiller@proxmox.com>
To: Fiona Ebner <f.ebner@proxmox.com>
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Subject: Re: [pve-devel] [PATCH storage 2/6] btrfs: fix volume size info for
subvolumes in scalar context
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On Fri, Feb 28, 2025 at 03:50:18PM +0100, Fiona Ebner wrote:
> Return the same size as in list context. See also commit "plugin: file
> size info: be consistent about size of directory subvol".
>
> Fixes cloning containers with unsized subvolumes on BTRFS. Before the
> change, this would fail with "mkfs.ext4: Device size reported to be
> zero.".
Interesting how it says "reported to be zero", when this commit changes
it from `1` to, well, zero?
>
> Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
> ---
> src/PVE/Storage/BTRFSPlugin.pm | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/src/PVE/Storage/BTRFSPlugin.pm b/src/PVE/Storage/BTRFSPlugin.pm
> index 1966b6f..b1f7912 100644
> --- a/src/PVE/Storage/BTRFSPlugin.pm
> +++ b/src/PVE/Storage/BTRFSPlugin.pm
> @@ -486,7 +486,7 @@ sub volume_size_info {
> my $ctime = (stat($path))[10];
> my ($used, $size) = (0, 0);
> #my ($used, $size) = btrfs_subvol_quota($class, $path); # uses wantarray
> - return wantarray ? ($size, 'subvol', $used, undef, $ctime) : 1;
> + return wantarray ? ($size, 'subvol', $used, undef, $ctime) : $size;
> }
>
> return PVE::Storage::Plugin::file_size_info($path, $timeout, $format);
> --
> 2.39.5
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