This is the Btrfs-progs changes to add support for the subvol label. As discussed in the mailing-list there are two ways we could get the label attached to the subvol, using kernel-ioctl method and the other method is by using attributes.
I preferred kernel-ioctl method over the attribute since there might be more than just the btrfs-progs which is reading and writing the label, if used attributes, the keyword is defined and used at the application level, which will be difficult to publicize and maintain the consistent keyword across any application in the long run. In the kernel-ioctl method we don't have this problem. For kernel-ioctl method you need the below two Btrfs-progs patches and the following kernel patch which is posted to mailing-list -------- Btrfs: ability to add label to snapshot and subvol fs/btrfs/ctree.h | 12 +++++++++- fs/btrfs/ioctl.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++ fs/btrfs/transaction.c | 1 + include/uapi/linux/btrfs.h | 2 ++ 4 files changed, 72 insertions(+), 1 deletion(-) -------- Still in any case if we decide to use the attributes method over the kernel-ioctl method, then following btrfs-progs patch Btrfs-progs: add feature to label subvol and snapshot should be replaced with Btrfs-progs: add attribute label for subvol and snapshot (also posted in the mailing-list) and the above kernel patch should be removed. v4: rebased to David's integration-20130219 branch Anand Jain (2): Btrfs-progs: add feature to label subvol and snapshot Btrfs-progs: cmd option to show or set the subvol label btrfslabel.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ btrfslabel.h | 4 +++- cmds-subvolume.c | 37 +++++++++++++++++++++++++++++++++++++ ctree.h | 4 +++- ioctl.h | 2 ++ man/btrfs.8.in | 6 ++++++ print-tree.c | 2 ++ 7 files changed, 98 insertions(+), 2 deletions(-) -- 1.8.1.227.g44fe835 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
