Re: False No space left on device error

[Eric Sandeen <sandeen@xxxxxxx>]

Steve Lord wrote:
> ino64 is a test option, it deliberately adds a large number to
> inode values so that it is possible to test that the inode handling
> is 64 bit clean without buying a few Tbytes of disk (which would
> have been very expensive when the code was written). It should
> not be used outside of testing.
>
> inode64 is a hack to force xfs to keep inodes down in the start of
> the filesystem where the inode numbers (which are disk addresses
> really) do not overflow 32 bits. This is for systems which cannot
> cope with larger inodes. There are also 3rd party backup
> applications which barf on large inode numbers, networker was
> the one I remember.

well, the inode64 option itself is the -inverse- of the hack, actually, 
right.  Default XFS inode allocation changed a few years ago, to force 
inodes into the low 32-bit range.  THAT was the mild hack, and the 
inode64 option was added to again allow XFS to work as originally 
designed, allocating inodes anywhere on the filesystem on systems which 
could handle 64-bit inodes.

-Eric


> Steve