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

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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

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