On Fri, Aug 25, 2017 at 11:32:21AM +0300, Nikolay Borisov wrote:
>
>
> On 24.08.2017 17:43, Nikolay Borisov wrote:
> >
> >
> > On 22.08.2017 23:00, josef@xxxxxxxxxxxxxx wrote:
> >> From: Josef Bacik <jbacik@xxxxxx>
> >>
> >> Nikolay reported that generic/273 was failing currently with ENOSPC.
> >> Turns out this is because we get to the point where the outstanding
> >> reservations are greater than the pinned space on the fs. This is a
> >> mistake, previously we used the current reservation amount in
> >> may_commit_transaction, not the entire outstanding reservation amount.
> >> Fix this to find the minimum byte size needed to make progress in
> >> flushing, and pass that into may_commit_transaction. From there we can
> >> make a smarter decision on whether to commit the transaction or not.
> >> This fixes the failure in generic/273.
> >>
> >> Reported-by: Nikolay Borisov <nborisov@xxxxxxxx>
> >> Signed-off-by: Josef Bacik <jbacik@xxxxxx>
> >
> > Reviewed-and-tested-by: Nikolay Borisov <nborisov@xxxxxxxx>
>
>
> For this commit we might also add:
>
> Fixes: 957780eb2788 ("Btrfs: introduce ticketed enospc infrastructure")
> Cc: stable@xxxxxxxxxxxxxxx # 4.8
JFI, tags added plus some additional explanation from N.
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