On 18/10/2018 18.44, Avi Kivity wrote:
On 18/10/2018 14.00, Avi Kivity wrote:
This can happen, and indeed I see our default hint is 1MB, so our
small files use a 1MB hint. Looks like we should remove that 1MB hint
since it's reducing allocation flexibility for XFS without a good
return.
I convinced myself that this is the root cause, it fits perfectly with
your explanation. I still think that XFS should allocate *something*
rather than ENOSPC, but I can also understand someone wanting a
guarantee.
A small twist: there were in fact lots of small files on that system,
caused by snapshots that the user did not remove. But I think the
explanation still holds.
