Btrfs devel - Aug 2007 - Question about block_limit

Hello,

I'm trying to implement block accounting, and I notice theres a block_limit
in
addition to blocks_used in btrfs_root_item.  Its not set anywhere or anything so
I'm wondering what I should do with it, as I assume its related to the block
accounting.  Should I make mkfs calculate the total number of blocks on the fs
and set block_limit to that?  Just want to know what that field is used for so I
can keep it in mind while I do my work, or add it to my TODO list.  Thanks much,

Josef

On Fri, 10 Aug 2007 13:42:10 -0400
Josef Bacik <jwhiter@redhat.com> wrote:
> Hello,
> 
> I'm trying to implement block accounting, and I notice theres a
> block_limit in addition to blocks_used in btrfs_root_item.  Its not
> set anywhere or anything so I'm wondering what I should do with it,
> as I assume its related to the block accounting.  Should I make mkfs
> calculate the total number of blocks on the fs and set block_limit to
> that?  Just want to know what that field is used for so I can keep it
> in mind while I do my work, or add it to my TODO list.  Thanks much,
It is meant to be used as a quota for the subvolume, but right now I
would set to 0 and have that mean no limit.

-chris