Premature "No Space left on device" on XFS

[Christoph Hellwig]

On Sat, Oct 08, 2011 at 02:29:34PM +0200, Bernhard Schmidt wrote:
> Can I avoid XFS giving ENOSPC due to inode shortage even in worst
> case situations? I would be fine preallocating 1 GB for inode
> storage if that would fix the problem. ext4 with bytes-per-inode =
> blocksize does this fine.

It's a bit of a hack, but you can do that fairly easily by:

 - mounting the filesystem with the ikeep option
 - creating the numbers of inodes you need (use a worst case allocation)
   before starting the workload