Re: [PATCH] Btrfs: reserve space specifically for the extent root

2009-10-30 Thread Yan, Zheng
On Fri, Oct 30, 2009 at 11:24 AM, Josef Bacik jo...@redhat.com wrote: On Fri, Oct 30, 2009 at 09:48:55AM +0800, Yan, Zheng  wrote: On Fri, Oct 30, 2009 at 4:35 AM, Josef Bacik jo...@redhat.com wrote: If there are alot of snapshots we could conceivably end up using much more metadata space

Re: [PATCH] Btrfs: reserve space specifically for the extent root

2009-10-29 Thread Yan, Zheng
On Fri, Oct 30, 2009 at 4:35 AM, Josef Bacik jo...@redhat.com wrote: If there are alot of snapshots we could conceivably end up using much more metadata space than what the worst case calculation would come up with, so instead of trying to figure out how many extents will be modified by

Re: [PATCH] Btrfs: reserve space specifically for the extent root

2009-10-29 Thread Josef Bacik
On Fri, Oct 30, 2009 at 09:48:55AM +0800, Yan, Zheng wrote: On Fri, Oct 30, 2009 at 4:35 AM, Josef Bacik jo...@redhat.com wrote: If there are alot of snapshots we could conceivably end up using much more metadata space than what the worst case calculation would come up with, so instead of