Re: ext4 extends implementation question

[Arno Schuring <aelschuring@hotmail.com>]

afuentes (alberto.fuentes@qindel.com on 2012-01-10 10:33 +0100):
> What happens when you run out of space to allocate new extends in
> ext4? is not allowed to write anymore even tho there are tons of
> blocks available?

I'm unsure what you mean. Extents is only an optimization strategy for
allocating contiguous blocks. If there are no contiguous blocks, ext4
falls back to allocating singular blocks, but with normal usage
patterns you should never get "tons of blocks available" with none of
them contiguous.

At least, that's how I understand it. Are you getting allocation
failures with still plenty of space available?


Regards,
Arno