Re: [PATCH V2] Btrfs: keep dropped roots in cache until transaction commit

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On Wed, Sep 16, 2015 at 09:50:17AM -0400, Josef Bacik wrote:
> On 09/16/2015 04:58 AM, Holger Hoffstätte wrote:
> >On 09/15/15 21:15, Josef Bacik wrote:
> >>On 09/15/2015 03:08 PM, Holger Hoffstätte wrote:
> >>>On 09/15/15 17:50, Holger Hoffstätte wrote:
> >>>>This V2 does indeed seem to fix the issues I reported with snapshot
> >>>>deletion & concurrent sync. I've now created/filled/deleted countless
> >>>>snapshots while issuing sync(s) in parallel, and the problem that I
> >>>>saw fairly frequently with V1 no longer seems to occur here.
> >>>
> >>>Well..I may have spoken too soon:
> >>
> >>Huh this doesn't seem related to my stuff.  Can I have your script
> >>you are running to reproduce this?  Thanks,
> >>
> >>Josef
> >
> >It seemed to be related to Omar's free-space-tree - I saw the same bug
> >a bit later on a different device without snapshot deletion, just
> >deleting two large files. Sorry for the false positive.
> >
> 
> Omar, do you have time to look into this?  Were they highly fragmented files
> or just giant contiguous files?  Thanks,
> 
> Josef
> 

Yeah, I'll take a look over the weekend or next week at the latest.

-- 
Omar
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