[pve-devel] [PATCH-SERIES storage 0/6] unsized subvol regression fix and improvements

[Fiona Ebner]

Superseded by v2:
https://lore.proxmox.com/pve-devel/20250303092445.13873-1-f.ebner@proxmox.com/T/#maf24450cef1ab5c66467e3ceb5c4c073fee69fa8

Am 28.02.25 um 15:50 schrieb Fiona Ebner:
> In list context, the file_size_info() function in Plugin.pm and the
> volume_size_info() function in BTRFSPlugin.pm would return 0 for the
> size, but in scalar context 1. As reported in the community forum [0],
> the change in commit e50dde0 ("volume export: rely on storage plugin's
> format"), changing the caller in volume_export() to scalar context
> exposed the inconsistency in the return value for the size. This led
> to breakage of migration with unsized btrfs subvolumes.
> 
> The first patch is the regression fix. Second patch fixes cloning
> containers with unsized subvolumes on BTFRS. The rest are independent
> further cleanups or improvements in the context of unsized subvols.
> 
> [0]: https://forum.proxmox.com/threads/162943/
> 
> Fiona Ebner (6):
>   plugin: file size info: be consistent about size of directory subvol
>   btrfs: fix volume size info for subvolumes in scalar context
>   plugin: volume export formats: avoid superfluous file_size_info() call
>   api: volume info: do not fail for zero-sized subvolumes
>   btrfs: die early for broken subvolume resize
>   btrfs: note that btrfs_get_subvol_id() function is broken
> 
>  src/PVE/API2/Storage/Content.pm | 4 +++-
>  src/PVE/Storage/BTRFSPlugin.pm  | 6 +++++-
>  src/PVE/Storage/Plugin.pm       | 5 +----
>  3 files changed, 9 insertions(+), 6 deletions(-)
>